Product Description
Slewing ring bearing is also called slewing ring, slewing bearing, turntable bearing, and rotary bearing.
Slewing ring bearing is a bearing that CZPT to bear axial load, radial load and overturning torque. Under normal circumstances, slewing ring bearings have their own mounting holes, lubricant holes and seal holes, to meet the different needs of the various host working under the various conditions;
On the other hand, slewing ring bearing itself has characteristics of compact structure, CZPT rotating convenient, easy to install and maintaining easily.
1.Gear Heat Treatment
2. Structure
2.1 Slewing ring bearings have different types as per different structures, here below is what we offering now:
Single row ball slewing ring bearings
Double row ball slewing ring bearings
Crossed roller slewing ring bearings
Three row roller slewing ring bearings
Flange slewing ring bearings
2.2 The above slewing ring bearings can also be divided into 3 different types as per different transmissions:
Slewing ring bearings with no gear
Slewing ring bearings with external gear
Slewing ring bearings with internal gear
3. Features:
Slewing ring bearings have more features: compact structure, reliable guide, simple installation, and easily maintenance
4. Application:
Slewing ring bearings can be widely used in lifting & transport machinery, mining machinery, construction machinery, port hoisting machinery, port oil transfer equipment, onshore and offshore crane, excavator, concrete machine, paper machine, plastic and rubber machine, weave machine, steel plant, electronic power plant, wind power generator, other construction and industry machines or equipments and other large rotary device
Single row ball slewing ring bearing:
1.Slewing bearing is also called slewing ring, slewing ring bearing, turntable bearing, and rotary bearing.
The single row ball slewing ring bearing is composed of 2 seat-rings. The balls contact with the circular race at 4 points, via which the axial force, radial force and resultant moment may be born simultaneously.
2.2. Structure
Slewing ring bearings have different types as per different structures, here below is what we offering now:
Single row ball slewing bearing has 3 different types:
Single row ball slewing bearing with no gear
Single row ball slewing bearing with external gear
Single row ball slewing bearing with internal gear
Single row ball slewing ring bearing
1.Slewing bearing is also called slewing ring, slewing ring bearing, turntable bearing, and rotary bearing.
The single row ball slewing ring bearing is composed of 2 seat-rings. The balls contact with the circular race at 4 points, via which the axial force, radial force and resultant moment may be born simultaneously.
2. Structure
Slewing ring bearings have different types as per different structures, here below is what we offering now:
Single row ball slewing bearing has 3 different types:
Single row ball slewing bearing with no gear
Single row ball slewing bearing with external gear
Single row ball slewing bearing with internal gear
3. Features
Single row ball slewing ring bearings have following features:
Compact in structure and light in weight.
4. Application:
Single row ball slewing ring bearings are widely used in slewing conveyers, welding arm and positioned, medium duty cranes, excavators and other engineering machines
Double row ball slewing ring bearing:
1.Slewing bearing is also called slewing ring, slewing ring bearing, turntable bearing, and rotary bearing.
The double row ball slewing bearing has 3 seat-rings. The steel balls and the retainers may be directly arranged into the upper and lower racers. Two rows of steel balls with different diameters are fitted according to the force. Such open type fitting is extraordinary convenient, the loading angels at upper and lower races are 90°which can carry both of the axial force and capsizing moment. When the radial force is larger than 1/10 of the axial force, the races should be newly designed.
2. Structure:
Double row ball slewing bearing has 3 different types:
Double row ball slewing bearing with no gear
Double row ball slewing bearing with external gear
Double row ball slewing bearing with internal gear
3. Features:
Double row ball slewing ring bearings have following features:
Larger dimension of axial and radial and compact structure.
4. Application:
Double row ball slewing ring bearings are widely used in Tower cranes which require working radius over medium range, auto crane and loading (unloading) machinery.
Double row ball slewing ring bearing:
1.Slewing bearing is also called slewing ring, slewing ring bearing, turntable bearing, and rotary bearing.
The double row ball slewing bearing has 3 seat-rings. The steel balls and the retainers may be directly arranged into the upper and lower racers. Two rows of steel balls with different diameters are fitted according to the force. Such open type fitting is extraordinary convenient, the loading angels at upper and lower races are 90°which can carry both of the axial force and capsizing moment. When the radial force is larger than 1/10 of the axial force, the races should be newly designed.
2. Structure:
Double row ball slewing bearing has 3 different types:
Double row ball slewing bearing with no gear
Double row ball slewing bearing with external gear
Double row ball slewing bearing with internal gear
3. Features:
Double row ball slewing ring bearings have following features:
Larger dimension of axial and radial and compact structure.
4. Application:
Double row ball slewing ring bearings are widely used in Tower cranes which require working radius over medium range, auto crane and loading (unloading) machinery.
Crossed roller slewing ring bearing
1.Slewing bearing is also called slewing ring, slewing ring bearing, turntable bearing, and rotary bearing.
With the cross roller Ring, cylindrical rollers are arranged crosswise, with each roller perpendicular to the adjacent roller, in a 90° groove, separated from each other by a spacer retainer. This design allows just 1 bearing to receive loads in all directions including, radial, axial and moment loads. Since the Cross-Roller Ring achieves high rigidity despite the minimum possible dimensions of the inner and outer rings, it is optimal for applications such as joints and swiveling units of industrial robots, swiveling tables of machining centers, rotary units of manipulators, precision rotary tables, medical equipment, measuring instruments and IC manufacturing machines.
2. Structure:
Cross roller slewing bearing has 3 different types:
Cross roller ball slewing bearing with no gear
Cross roller ball slewing bearing with external gear
Cross roller ball slewing bearing with internal gear
3. Features
Cross roller slewing ring bearings have following features:
1. High precision: cross roller bearings can be made high precision bearings, at P4, P2.
2. High rigidity: These series roller bearings are with preload.
3. High load capacity: This series roller bearing can support axial load, radial load, and tilting load.
4. Small volume: this series roller bearing can save space for the machine.
4. Application
Cross roller slewing rings are widely applied in the precision rotary table, rotary joint of manipulator, medical equipment, and measuring instrument etc
Triple row roller slewing ring bearing
1.Slewing bearing is also called slewing ring, slewing ring bearing, turntable bearing, and rotary bearing.
Three row roller slewing ring bearing has 3 seat-rings, which separate the upper, lower and radial raceway, via which the load of each row of the rollers may be specified. Thus it can carry different load simultaneously and its load capacity is the largest 1 of the 4 types
2. Structure:
Triple row roller slewing bearing has 3 different types:
Triple row roller slewing bearing with no gear
Triple row roller slewing bearing with external gear
Triple row roller slewing bearing with internal gear
3. Features
Triple row roller slewing ring bearings have following features:
Larger axial and radial dimension, compact structure
4. Application
Triple row roller slewing rings are widely used in heavy-duty machines which require large working radius, such as bucket-wheel excavators, wheeled cranes, ship cranes, ladle turret, auto cranes etc.
Flange Slewing Bearing
1.Slewing bearing is also called slewing ring, slewing ring bearing, turntable bearing, and rotary bearing.
Flange slewing bearing is a special slewing ring bearing, it can have 1 flange in the outer ring, or 1 flange in the inner ring, even it can have 1 flange in both inner ring and outer ring.
2. Structure:
Flange slewing bearing has 3 different types:
Flange slewing bearing with no gear
Flange slewing bearing with external gear
Flange slewing bearing with internal gear
3. Features
Flange slewing bearings have following features:
Compact structure and easily installment.
4. Application
Flange slewing bearings are widely used in tow truck, and other applications are the same as slewing bearings, such as lifting & transport machinery, mining machinery, construction machinery, excavator, concrete machine, paper machine, plastic and rubber machine and steel plant.
Excavator Slewing Bearing
Excavator slewing bearing is a special slewing ring bearing as per its applications. And it is a very important part for excavators, we can supply excavator slewing bearings for both second-hand excavators for maintenance and new excavators.
2. Structure:
Excavator slewing bearing are usually made as per single row ball slewing bearing structure, and most of them are internal gear types, but some are external gear types.
3. Features
Excavator slewing bearings have familiar features as single row ball slewing ring bearings.
Compact structure, light weight and easily installment.
4. Application
Excavator slewing bearings are widely used for all brands of excavators, such as Hitachi, Kobelco, Sumitomo, Doosan, Hyundai, Samsung, , Daewoo, Kato, CZPT and so on.
The suitable temperature and working environment for slewing bearing
The slewing bearing produced by our company can work normally at -300C.~+ 700C. If users need to adapt to lower or higher temperature support, our engineering technicians can design for you. If the slewing bearing are used in particularly hostile environment, such as Marine c1imate, dust or CZPT particles (dust, cement, coal powder) etc. Special sealing rings, protective devices, and proper oil paths must be selected. Therefore, we hope users to do the daily maintenance work to make your slewing bearing function normally
The suitable temperature and working environment for slewing bearing
The slewing bearing produced by our company can work normally at -300C.~+ 700C. If users need to adapt to lower or higher temperature support, our engineering technicians can design for you. If the slewing bearing are used in particularly hostile environment, such as Marine c1imate, dust or CZPT particles (dust, cement, coal powder) etc. Special sealing rings, protective devices, and proper oil paths must be selected. Therefore, we hope users to do the daily maintenance work to make your slewing bearing function normally
Installation of slewing bearing
1.Handling and transportation .The slewing bearing must be handled carefully
.Transportation and storage of slewing bearing should be held horizontally and stored in a dry room
.For hoisting lift bolt is suitable and please move it horizontally , do not hit anything, especially the direction collision
.The slewing bearing surface is covered with antitrust agent, whose rust proof life is usually 6 months For those whose storage
life of more than 6 months (such as accessories) should take the antitrust package or other storage measures again
2.Installing support requirements .Generally, install matching support adopts tubular structure , the cylinder’s wall should be better
aligned at the center of the raceway
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Standard or Nonstandard: | Standard |
|---|---|
| Feature: | High Speed, Vacuum, Antimagnetic, Cold-Resistant, Corrosion-Resistant, Heat-Resistant |
| Sealing Gland: | Sealed On Both Sides |
| Rolling-Element Number: | Single-Row |
| Roller Type: | Spherical Raceway |
| Material: | Bearing Steel |
| Samples: |
US$ 1/Set
1 Set(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
What are the Common Signs of Wear or Damage in Ball Bearings that Indicate the Need for Replacement?
Ball bearings are subjected to wear and stress during operation, and over time, they may exhibit signs of damage or deterioration that warrant replacement. Recognizing these signs is crucial to prevent catastrophic failure and ensure safe and reliable operation. Here are the common signs of wear or damage in ball bearings:
- Unusual Noise:
If you hear unusual grinding, clicking, or rumbling noises coming from the bearing during operation, it may indicate worn-out or damaged components. Unusual noise suggests that the bearing is no longer operating smoothly.
- Vibration:
Excessive vibration in the machinery can be a sign of bearing wear. Vibrations can result from uneven wear, misalignment, or damaged components within the bearing.
- Increased Temperature:
Higher operating temperatures than usual may indicate increased friction due to inadequate lubrication, wear, or other issues. Monitoring the bearing’s temperature can help identify potential problems.
- Irregular Movement:
If you notice irregular movement, jerking, or sticking during rotation, it could be a sign that the bearing is no longer operating smoothly. This may be due to damaged rolling elements or raceways.
- Reduced Performance:
If the machinery’s performance has decreased, it may be due to a compromised bearing. Reduced efficiency, increased energy consumption, or a decline in overall performance could be indicators of bearing wear.
- Visible Wear or Damage:
Inspect the bearing for visible signs of wear, such as pitting, scoring, or discoloration on the rolling elements or raceways. Severe wear or damage is a clear indication that the bearing needs replacement.
- Leakage or Contamination:
If there is evidence of lubricant leakage, contamination, or the presence of foreign particles around the bearing, it suggests that the seal or shield may be compromised, leading to potential damage.
- Looseness or Excessive Play:
If you can feel excessive play or looseness when manually moving the bearing, it could indicate worn-out components or misalignment.
- Reduced Lifespan:
If the bearing’s expected lifespan is significantly shorter than usual, it may be due to inadequate lubrication, excessive loads, or improper installation, leading to accelerated wear.
- Frequent Failures:
If the bearing is consistently failing despite regular maintenance and proper use, it could indicate a chronic issue that requires addressing, such as inadequate lubrication or misalignment.
It’s important to conduct regular inspections, monitor performance, and address any signs of wear or damage promptly. Replacing worn or damaged ball bearings in a timely manner can prevent further damage to machinery, reduce downtime, and ensure safe and efficient operation.
Are there any Industry Standards or Certifications that Ball Bearings should Meet?
Yes, there are several industry standards and certifications that ball bearings should meet to ensure their quality, performance, and reliability. These standards help manufacturers, engineers, and customers assess the suitability of bearings for specific applications. Some of the key standards and certifications for ball bearings include:
- ISO Standards:
The International Organization for Standardization (ISO) has developed a series of standards related to ball bearings. ISO 15 defines dimensions, boundary dimensions, and tolerances for radial bearings. ISO 281 specifies dynamic load ratings and calculation methods for bearings’ life calculations.
- ABEC (Annular Bearing Engineering Committee) Ratings:
ABEC ratings are commonly used in North America to indicate the precision and performance of ball bearings. Ratings range from ABEC 1 (lowest precision) to ABEC 9 (highest precision). However, it’s important to note that ABEC ratings focus primarily on dimensional tolerances and do not encompass all aspects of bearing quality.
- DIN Standards:
The German Institute for Standardization (Deutsches Institut für Normung, DIN) has published various standards related to ball bearings. DIN 625 covers dimensions for deep groove ball bearings, while DIN 616 provides guidelines for precision angular contact ball bearings.
- JIS (Japanese Industrial Standards):
JIS standards are used in Japan and internationally to define the characteristics and dimensions of various products, including ball bearings. JIS B 1512 outlines the classification and dimensions of rolling bearings.
- ASTM (American Society for Testing and Materials) Standards:
ASTM has standards that cover various aspects of bearing testing, performance, and materials. ASTM F2215, for instance, specifies the requirements for ball bearings used in surgical implants.
- CE Marking:
CE marking indicates that a product complies with European Union health, safety, and environmental requirements. It may be required for bearings used in machinery intended to be sold within the EU market.
- Industry-Specific Standards:
Various industries, such as aerospace, automotive, medical, and nuclear, have specific standards or certifications that bearings must meet to ensure safety, reliability, and compliance with industry-specific requirements.
- Quality Management Systems:
Manufacturers that adhere to quality management systems, such as ISO 9001, demonstrate their commitment to consistent product quality and customer satisfaction. Certification to these systems indicates that the manufacturing process follows established protocols and best practices.
When selecting ball bearings, it’s important to consider the relevant standards and certifications that align with the application’s requirements. This ensures that the bearings meet recognized quality and performance criteria, ultimately contributing to reliable and efficient operation.
What are the Primary Benefits of Using Ball Bearings in Machinery and Equipment?
Ball bearings offer several primary benefits when used in machinery and equipment. Their design and functionality provide advantages that contribute to the efficient and reliable operation of various applications. Here are the key benefits:
- Reduced Friction:
One of the primary benefits of ball bearings is their ability to minimize friction between moving parts. The rolling motion of the balls reduces the contact area and sliding friction, leading to smoother operation and less energy loss due to frictional heating.
- Efficient Load Support:
Ball bearings are engineered to support both radial and axial loads, making them versatile for applications with multidirectional forces. This load-bearing capability allows machinery to handle different types of loads while maintaining performance and stability.
- Smooth Rotation:
Ball bearings enable smooth and precise rotational movement. The rolling motion of the balls provides consistent motion with minimal resistance, ensuring that machinery operates smoothly and without jerks.
- High-Speed Capability:
Due to their low friction and efficient rolling action, ball bearings are suitable for high-speed applications. They allow machinery and equipment to achieve and maintain high rotational speeds without excessive wear or heat buildup.
- Reduced Wear and Maintenance:
The reduced friction in ball bearings leads to lower wear on components. This results in longer service intervals and reduced maintenance requirements, saving both time and maintenance costs.
- Energy Efficiency:
By minimizing friction and reducing energy losses, ball bearings contribute to the overall energy efficiency of machinery. This is particularly important in applications where energy consumption is a concern.
- Versatility:
Ball bearings come in various types, sizes, and configurations, allowing them to be used in a wide range of machinery and equipment. They can be customized to suit specific application requirements.
- Reliability and Longevity:
Ball bearings are designed to withstand heavy loads and harsh operating conditions. Their durability and resistance to wear ensure reliable performance and an extended operational life.
- Quiet Operation:
Ball bearings contribute to quiet machinery operation due to the smooth rolling motion of the balls. This is particularly important in applications where noise reduction is a consideration.
In summary, the primary benefits of using ball bearings in machinery and equipment include reduced friction, efficient load support, smooth rotation, high-speed capability, reduced wear and maintenance, energy efficiency, versatility, reliability, and quiet operation. These benefits collectively enhance the performance and longevity of machinery across various industries.
editor by CX 2024-05-17
China Hot selling Slewing Ring Bearings Ball Turntable Bearing Gear Slewing Bearing with Surface Treatment by Bluing (VLI200944N) bearing assembly
Product Description
CZPT is a professional manufacturer in slewing ring bearings since 1993. We can also design and make other standard and non-standard ball bearings, roller bearings and precision bearings as per customer’s different technical requirements.
Slewing bearing is also called slewing ring, slewing ring bearing, turntable bearing, and rotary bearing.
Three row roller slewing ring bearing has 3 seat-rings, which separate the upper, lower and radial raceway, via which the load of each row of the rollers may be specified. Thus it can carry different load simultaneously and its load capacity is the largest 1 of the 4 types
CZPT bearings can supply the following featured slewing bearing:
1. Single row slewing rings have a single row of balls, a standard bearing raceway, and 4 points of contact between the balls and raceway;
2. Double row products have tow rows of ball bearings, 2 raceways, and 8 points of contacts for each ball;
3. Slewing rings with 3 independent rows of rollers;
4. Cross roller slewing rings have a single row of rollers with the axes of alternation, adjacent rollers at right angles to 1 another
5. Ball and roller combined slewing rings have a row of rollers and a row of balls into the same unit.
Structure:
Triple row roller slewing bearing has 3 different types:
Triple row roller slewing bearing with no gear
Triple row roller slewing bearing with external gear
Triple row roller slewing bearing with internal gear
Advantages:
1. Best quality and price
2. Small order accepted
3. ISO certified company
4. Variorum models
5. Extensive stock available
6. OEM accepted
Application:
Mine machine, port hoisting machine, port oil transfer equipment, onshore and offshore crane, excavator, concrete machine, paper machine, plastic and rubber machine, weave machine, steel plant, electronic power plant, wind power generator, other construction and industry machines or equipments.
Packaging Details:
1. Bearing surface is covered with the anti-rust oil first; And then wrapped with the plastic film;
2. And then packed with Kraft paper and professional belts;
3. At last, with wooden box totally at the outer packing to invoid the rust or the moist;
4. We can depend on the customers demand to be packed;
Details for turret swing bearing VLI200944N:
ID: 840MM
OD: 1048MM
H: 56MM
W. T.: 67.5KG
Holes in outer ring: 16-φ 18
Holes in inner ring: 22- M12
Material: 50Mn
Surface treatment: Bluing
Application: Water-treatment equipment
More details, please contact us sooner…
External gear:
VLA2571-N
VLA200544-N
VLA200644-N
VLA20 0571 -N
VLA200844-N
VLA200944-N
VLA257194-N
VSA2571-N
VSA200544-N
VSA200644-N
VSA20 0571 -N
VSA200844-N
VSA200944-N
VSA257194-N
VSA25571-N
VSA25571-N
VSA25 0571 -N
VSA251055-N
Internal gear:
VLI2571-N
VLI200544-N
VLI200644-N
VLI20 0571 -N
VLI200844-N
VLI200944-N
VLI257194-N
VSI2571-N
VSI200544-N
VSI200644-N
VSI20 0571 -N
VSI200844-N
VSI200944-N
VSI257194-N
VSI25571-N
VSI25571-N
VSI25 0571 -N
VSI251055-N
Without gear:
VLU2571
VLU200544
VLU200644
VLU20 0571
VLU200844
VLU200944
VLU257194
VSU2571
VSU200544
VSU200644
VSU20 0571
VSU200844
VSU200944
VSU257194
VSU25571
VSU25571
VSU25 0571
VSU251055
| Model | Overall Dimension | Mounting Dimension | Structure Dimension | Gear (mm) | Axial Load | Mass (Kgs) | ||||||||||||||||
| Da | di | H | La | Li | n1 | n2 | φ1 | φ2 | D1 | b | h | B | C | Di | da | m | z | do | x | |||
| mm | mm | mm | ||||||||||||||||||||
| VLI2571N | 518 | 325 | 56 | 490 | 375 | 8 | 12 | φ18 | M12 | 459 | 40 | 11.5 | 44.5 | 47.5 | 415.5 | 412.5 | 5 | 67 | 335 | 0 | 600 | 28.5 |
| VLI 20 571N | 516 | 325 | 56 | 490 | 375 | 8 | 12 | φ18 | M12 | 456 | 40 | 11.5 | 44.5 | 47.5 | 415.5 | 412.5 | 5 | 67 | 335 | 0 | 300 | 36.3 |
| VLI2571N | 518 | 325 | 56 | 490 | 375 | 8 | 12 | 18 | M12 | 456 | 40 | 8.5 | 44.5 | 47.5 | 415.5 | 412.5 | 5 | 67 | 335 | 0 | 295 | 27.5 |
| VLI200544N | 648 | 444 | 56 | 620 | 505 | 10 | 16 | φ18 | M12 | 589 | 44.5 | 11.5 | 44.5 | 47.5 | 545.5 | 542.5 | 6 | 76 | 456 | 0 | 790 | 40.6 |
| VLI200544N | 648 | 444 | 56 | 620 | 505 | 10 | 16 | 18 | M12 | 589 | 44.5 | 11.5 | 44.5 | 47.5 | 545.5 | 542.5 | 6 | 76 | 456 | 0 | 385 | 38 |
| VLI200644N | 748 | 546 | 56 | 720 | 605 | 12 | 18 | φ18 | M12 | 689 | 44.5 | 11.5 | 44.5 | 47.5 | 645.5 | 642.5 | 6 | 93 | 558 | 0 | 900 | 47.4 |
| VLI200644N | 748 | 546 | 56 | 720 | 605 | 12 | 18 | 18 | M12 | 689 | 44.5 | 8.5 | 44.5 | 47.5 | 645.5 | 642.5 | 6 | 93 | 558 | 0 | 455 | 45 |
| VLI20 0571 N | 848 | 648 | 56 | 820 | 705 | 12 | 20 | φ18 | M12 | 789 | 44.5 | 11.5 | 44.5 | 47.5 | 745.5 | 742.5 | 6 | 110 | 660 | 0 | 530 | 54 |
| VLI20 0571 N | 848 | 648 | 56 | 820 | 705 | 12 | 20 | 18 | M12 | 789 | 44.5 | 8.5 | 44.5 | 47.5 | 745.5 | 742.5 | 6 | 110 | 660 | 0 | 530 | 51.5 |
| VLI200844N | 948 | 736 | 56 | 920 | 805 | 14 | 20 | φ18 | M12 | 889 | 44.5 | 11.5 | 44.5 | 47.5 | 845.5 | 842.5 | 8 | 94 | 752 | 0 | 1200 | 65.2 |
| VLI200844N | 948 | 736 | 56 | 920 | 805 | 14 | 20 | 18 | M12 | 889 | 44.5 | 8.5 | 44.5 | 47.5 | 845.5 | 842.5 | 8 | 94 | 752 | 0 | 600 | 61.5 |
| VLI30 0571 N | 1100 | 810 | 90 | 1060 | 894 | 30 | 30 | 22 | M20 | 71 | 19 | 71 | 71 | 953 | 957 | 10 | 83 | 830 | 0 | 2550 | 164 | |
| VLI200944N | 1048 | 840 | 56 | 1571 | 905 | 16 | 22 | φ18 | M12 | 989 | 44.5 | 11.5 | 44.5 | 47.5 | 945.5 | 942.5 | 8 | 107 | 856 | 0 | 1350 | 71 |
| VLI200944N | 1048 | 840 | 56 | 1571 | 905 | 16 | 22 | 18 | M12 | 989 | 44.5 | 8.5 | 44.5 | 47.5 | 945.5 | 942.5 | 8 | 107 | 856 | 0 | 670 | 67.5 |
| VLI357155N | 1200 | 910 | 90 | 1160 | 994 | 30 | 30 | 22 | M20 | 71 | 19 | 71 | 71 | 1053 | 1057 | 10 | 93 | 930 | 0 | 2800 | 181 | |
| VLI257194N | 1198 | 984 | 56 | 1170 | 1055 | 16 | 24 | φ18 | M12 | 1139 | 44.5 | 11.5 | 44.5 | 47.5 | 1096 | 1093 | 8 | 125 | 1000 | 0 | 2000 | 80 |
| VLI257194N | 1198 | 984 | 56 | 1170 | 1055 | 16 | 24 | 18 | M12 | 1139 | 44.5 | 8.5 | 44.5 | 47.5 | 1096 | 1093 | 8 | 125 | 1000 | 0 | 770 | 81.5 |
| VLI301155N | 1300 | 1571 | 90 | 1260 | 1094 | 36 | 36 | 22 | M20*40 | 71 | 19 | 71 | 71 | 1153 | 1157 | 10 | 103 | 1030 | 0 | 3100 | 198 | |
| VLI301255N | 1400 | 1110 | 90 | 1360 | 1194 | 42 | 42 | 22 | M20*40 | 71 | 19 | 71 | 71 | 1253 | 1257 | 10 | 113 | 1130 | 0 | 3350 | 215 | |
| VLI301355N | 1500 | 1210 | 90 | 1460 | 1294 | 42 | 42 | 22 | M20*40 | 71 | 19 | 71 | 71 | 1353 | 1357 | 10 | 123 | 1230 | 0 | 3600 | 233 | |
| VLI301455N | 1600 | 1310 | 90 | 1560 | 1394 | 48 | 48 | 22 | M20*40 | 71 | 19 | 71 | 71 | 1453 | 1457 | 10 | 133 | 1330 | 0 | 4000 | 251 | |
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Rolling Body: | Ball Bearings |
|---|---|
| The Number of Rows: | Single |
| Outer Dimension: | 200-6000mm |
| Material: | Bearing Steel |
| Spherical: | Non-Aligning Bearings |
| Load Direction: | Axial, Radial and Tilting Moment |
| Samples: |
US$ 460/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
How does Preload Affect the Performance and Efficiency of Ball Bearings?
Preload is a crucial factor in ball bearing design that significantly impacts the performance, efficiency, and overall behavior of the bearings in various applications. Preload refers to the intentional axial force applied to the bearing’s rolling elements before it is mounted. This force eliminates internal clearance and creates contact between the rolling elements and the raceways. Here’s how preload affects ball bearing performance:
- Reduction of Internal Clearance:
Applying preload reduces the internal clearance between the rolling elements and the raceways. This eliminates play within the bearing, ensuring that the rolling elements are in constant contact with the raceways. This reduced internal clearance enhances precision and reduces vibrations during operation.
- Increased Stiffness:
Preloaded bearings are stiffer due to the elimination of internal clearance. This increased stiffness improves the bearing’s ability to handle axial and radial loads with higher accuracy and minimal deflection.
- Minimized Axial Play:
Preload minimizes or eliminates axial play within the bearing. This is especially important in applications where axial movement needs to be minimized, such as machine tool spindles and precision instruments.
- Enhanced Rigidity:
The stiffness resulting from preload enhances the bearing’s rigidity, making it less susceptible to deformation under load. This is critical for maintaining precision and accuracy in applications that require minimal deflection.
- Reduction in Ball Slippage:
Preload reduces the likelihood of ball slippage within the bearing, ensuring consistent contact between the rolling elements and the raceways. This leads to improved efficiency and better load distribution.
- Improved Running Accuracy:
Preloading enhances the running accuracy of the bearing, ensuring that it maintains precise rotational characteristics even under varying loads and speeds. This is essential for applications requiring high accuracy and repeatability.
- Optimized Performance at High Speeds:
Preload helps prevent skidding and slipping of the rolling elements during high-speed operation. This ensures that the bearing remains stable, reducing the risk of noise, vibration, and premature wear.
- Impact on Friction and Heat Generation:
While preload reduces internal clearance and friction, excessive preload can lead to higher friction and increased heat generation. A balance must be struck between optimal preload and minimizing friction-related issues.
- Application-Specific Considerations:
The appropriate amount of preload depends on the application’s requirements, such as load, speed, accuracy, and operating conditions. Over-preloading can lead to increased stress and premature bearing failure, while under-preloading may result in inadequate rigidity and reduced performance.
Overall, preload plays a critical role in optimizing the performance, accuracy, and efficiency of ball bearings. Engineers must carefully determine the right preload level for their specific applications to achieve the desired performance characteristics and avoid potential issues related to overloading or inadequate rigidity.
How do Miniature Ball Bearings Differ from Standard-sized Ones, and Where are They Commonly Used?
Miniature ball bearings, as the name suggests, are smaller in size compared to standard-sized ball bearings. They have distinct characteristics and are designed to meet the unique requirements of applications that demand compactness, precision, and efficient rotation in confined spaces. Here’s how miniature ball bearings differ from standard-sized ones and where they are commonly used:
- Size:
The most noticeable difference is their size. Miniature ball bearings typically have outer diameters ranging from a few millimeters to around 30 millimeters, while standard-sized ball bearings have larger dimensions suitable for heavier loads and higher speeds.
- Load Capacity:
Due to their smaller size, miniature ball bearings have lower load-carrying capacities compared to standard-sized bearings. They are designed for light to moderate loads and are often used in applications where precision and compactness are prioritized over heavy load support.
- Precision:
Miniature ball bearings are known for their high precision and accuracy. They are manufactured to tighter tolerances, making them suitable for applications requiring precise motion control and low levels of vibration.
- Speed:
Miniature ball bearings can achieve higher speeds than standard-sized bearings due to their smaller size and lower mass. This makes them ideal for applications involving high-speed rotation.
- Friction and Efficiency:
Miniature ball bearings generally have lower friction due to their smaller contact area. This contributes to higher efficiency and reduced heat generation in applications that require smooth and efficient motion.
- Applications:
Miniature ball bearings find applications in various industries and sectors:
- Electronics and Consumer Devices:
They are used in small motors, computer disk drives, printers, and miniature fans, where space is limited but precise motion is essential.
- Medical and Dental Equipment:
Miniature bearings are used in medical devices such as surgical instruments, dental handpieces, and diagnostic equipment due to their precision and compactness.
- Robotics and Automation:
Miniature ball bearings are integral to robotic arms, miniature conveyors, and automation systems, enabling precise movement in confined spaces.
- Aerospace and Defense:
They are used in applications like UAVs (drones), aerospace actuators, and satellite components where size and weight constraints are critical.
- Optics and Instrumentation:
Miniature bearings play a role in optical instruments, cameras, and measuring devices, providing smooth rotation and accurate positioning.
Overall, miniature ball bearings are specialized components designed for applications where space, precision, and efficient rotation are paramount. Their compactness and high precision make them crucial in various industries requiring reliable motion control in limited spaces.
What are the Primary Benefits of Using Ball Bearings in Machinery and Equipment?
Ball bearings offer several primary benefits when used in machinery and equipment. Their design and functionality provide advantages that contribute to the efficient and reliable operation of various applications. Here are the key benefits:
- Reduced Friction:
One of the primary benefits of ball bearings is their ability to minimize friction between moving parts. The rolling motion of the balls reduces the contact area and sliding friction, leading to smoother operation and less energy loss due to frictional heating.
- Efficient Load Support:
Ball bearings are engineered to support both radial and axial loads, making them versatile for applications with multidirectional forces. This load-bearing capability allows machinery to handle different types of loads while maintaining performance and stability.
- Smooth Rotation:
Ball bearings enable smooth and precise rotational movement. The rolling motion of the balls provides consistent motion with minimal resistance, ensuring that machinery operates smoothly and without jerks.
- High-Speed Capability:
Due to their low friction and efficient rolling action, ball bearings are suitable for high-speed applications. They allow machinery and equipment to achieve and maintain high rotational speeds without excessive wear or heat buildup.
- Reduced Wear and Maintenance:
The reduced friction in ball bearings leads to lower wear on components. This results in longer service intervals and reduced maintenance requirements, saving both time and maintenance costs.
- Energy Efficiency:
By minimizing friction and reducing energy losses, ball bearings contribute to the overall energy efficiency of machinery. This is particularly important in applications where energy consumption is a concern.
- Versatility:
Ball bearings come in various types, sizes, and configurations, allowing them to be used in a wide range of machinery and equipment. They can be customized to suit specific application requirements.
- Reliability and Longevity:
Ball bearings are designed to withstand heavy loads and harsh operating conditions. Their durability and resistance to wear ensure reliable performance and an extended operational life.
- Quiet Operation:
Ball bearings contribute to quiet machinery operation due to the smooth rolling motion of the balls. This is particularly important in applications where noise reduction is a consideration.
In summary, the primary benefits of using ball bearings in machinery and equipment include reduced friction, efficient load support, smooth rotation, high-speed capability, reduced wear and maintenance, energy efficiency, versatility, reliability, and quiet operation. These benefits collectively enhance the performance and longevity of machinery across various industries.
editor by CX 2024-05-15
China Professional Double Row Ball Slewing Bearings with External Teeth Ve086b03 bearing distributors
Product Description
CZPT is a professional manufacturer in slewing ring bearings since 1993. We can also design and make other standard and non-standard ball slewing ring bearings, roller slewing bearings and precision slewing ring bearings as per customer’s different technical requirements.
Slewing ring bearing is also called slewing ring, slewing bearing, turntable bearing, and rotary bearing.
Slewing ring bearing is a bearing that CZPT to bear axial load, radial load and overturning torque. Under normal circumstances, slewing ring bearings have their own mounting holes, lubricant holes and seal holes, to meet the different needs of the various host working under the various conditions;
On the other hand, slewing ring bearing itself has characteristics of compact structure, CZPT rotating convenient, easy to install and maintaining easily.
Slewing Ring Bearings——Types:
1. 4 point contact ball slewing ring bearings
2. double row ball 4 point contact slewing ring bearings(same diameter ball; different diameter ball)
3. cross roller slewing ring bearings
4. triple row cylindrical roller combined slewing ring bearings
5. ball roller combined slewing ring bearings
6. light flanged slewing ring bearings
Slewing Ring Bearings——Technical Data:
1. Material: 42CrMo, 50Mn
2. Precision: P0. P6. P5.
3. Outside diameter: 200~9500mm
4. Cage/retainer: Nylon or aluminum
5. Gear type: non-geared, internal gear and external gear, gear hardened
Slewing Ring Bearings——Applications:
Slewing ring bearings are widely used in industry and known as “the machine joints”
Hereunder is the specific slewing bearing applications
1. Construction machinery (e.g. cranes, excavators, loader, scraper)
2. Metallurgical machinery (e.g. for steel plant)
3. Heavy machinery equipments (e.g. mining machinery, concrete machinery)
4. Marine machinery equipment (e.g. vessel, port hoisting machine, port oil transfer equipment, onshore and offshore crane)
5. Light machinery equipments (e.g. paper machine, plastic, rubber machine, weave machine)
6. Wind power generator
7. Military products (e.g. aerospace machinery)
8. Packing machinery
Slewing Ring Bearings——Packaging Details:
Step 1: Covered with the anti-rust oil
Step 2: wrapped with the plastic film;
Step 3: Packed with Kraft paper and professional belts;
Step 4: Put into wooden box to avoid the rust or the moist;
Remark: Normally, plastic film+ Kraft +belt+ wooden box, but customized packing available,
Our Advantages:
1. Good quality and competitive price
2. Trial order accepted
3. ISO certified company
4. OEM and ODM accepted
5. Manufacturing slewing ring bearings since 2000
CZPT Slewing bearing models:
Double row ball slewing bearings with external teeth
VE050B01
VE061B00
VE086B03
VE098B00
VE108B03
VE114B00
VE120B00
VE120B01
VE120B12
VE122B00
VE129B00
VE138B04
VE138B05
VE147B01
VE147B03
VE160B00
VE160B04
VE163B01
Double row ball slewing bearings with internal teeth
VI057B02
VI085B00
VI095B01
VI097B06
VI098B03
VI101B00
VI107B01
VI117B01
VI117B06
VI120B00
VI120B01
VI125B01
VI134B00
VI147B01
VI147B02
VI153B03
VI153B06
VI175B03
Double row ball slewing bearings without teeth
VS050B00
VS061B00
VS098B00
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Transport Package: | Wooden Box |
|---|---|
| Specification: | ISO9001: 2008 |
| Trademark: | LYHY |
| Origin: | China |
| Samples: |
US$ 300/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
What are the Challenges Associated with Noise Reduction in Ball Bearings?
Noise reduction in ball bearings is a crucial consideration, especially in applications where noise levels must be minimized for operational efficiency and user comfort. While ball bearings are designed to operate smoothly, there are several challenges associated with reducing noise in their operation:
- Vibration:
Vibration generated by the movement of rolling elements and raceways can lead to noise. Even minor irregularities in bearing components or the mounting system can cause vibration that translates into audible noise.
- Bearing Type and Design:
The type and design of the ball bearing can impact noise generation. For example, deep groove ball bearings are known for their quiet operation, while angular contact bearings can generate more noise due to their higher contact angles.
- Lubrication:
Improper or inadequate lubrication can result in increased friction and wear, leading to noise. Choosing the right lubricant and maintaining proper lubrication levels are essential for reducing noise in ball bearings.
- Bearing Clearance and Preload:
Incorrect clearance or preload settings can lead to noise issues. Excessive clearance or inadequate preload can cause the rolling elements to impact the raceways, resulting in noise during rotation.
- Material and Manufacturing Quality:
The quality of materials and manufacturing processes can affect noise levels. Inconsistent or low-quality materials, improper heat treatment, or manufacturing defects can lead to noise generation during operation.
- Surface Finish:
The surface finish of the rolling elements and raceways can impact noise. Rough surfaces can generate more noise due to increased friction and potential irregularities.
- Sealing and Shielding:
Seals and shields that protect bearings can influence noise levels. While they are necessary for contamination prevention, they can also cause additional friction and generate noise.
- Operating Conditions:
External factors such as temperature, speed, and load can influence noise levels. High speeds or heavy loads can amplify noise due to increased stress on the bearing components.
- Wear and Deterioration:
As ball bearings wear over time, noise levels can increase. Worn components or inadequate lubrication can lead to more significant noise issues as the bearing operates.
To address these challenges and reduce noise in ball bearings, manufacturers and engineers employ various techniques, such as optimizing design, selecting suitable bearing types, using proper lubrication, maintaining accurate preload settings, and ensuring high-quality materials and manufacturing processes. Noise reduction efforts are essential to improve overall product quality, meet noise regulations, and enhance user experience in various applications.
How do Temperature and Environmental Conditions Affect the Performance of Ball Bearings?
Temperature and environmental conditions have a significant impact on the performance and longevity of ball bearings. The operating environment can influence factors such as lubrication effectiveness, material properties, and overall bearing behavior. Here’s how temperature and environmental conditions affect ball bearing performance:
- Lubrication:
Temperature variations can affect the viscosity and flow characteristics of lubricants. Extreme temperatures can cause lubricants to become too thin or too thick, leading to inadequate lubrication and increased friction. In high-temperature environments, lubricants can degrade, reducing their effectiveness.
- Material Properties:
Temperature changes can alter the material properties of the bearing components. High temperatures can lead to thermal expansion, affecting bearing clearances and potentially causing interference between components. Extreme cold temperatures can make materials more brittle and prone to fracture.
- Clearance Changes:
Temperature fluctuations can cause changes in the internal clearance of ball bearings. For instance, at high temperatures, materials expand, leading to increased clearance. This can affect bearing performance, load distribution, and overall stability.
- Corrosion and Contamination:
Harsh environmental conditions, such as exposure to moisture, chemicals, or abrasive particles, can lead to corrosion and contamination of bearing components. Corrosion weakens the material, while contamination accelerates wear and reduces bearing life.
- Thermal Stress:
Rapid temperature changes can result in thermal stress within the bearing components. Differential expansion and contraction between the inner and outer rings can lead to stress and distortion, affecting precision and bearing integrity.
- Noise and Vibration:
Temperature-related changes in material properties and internal clearances can influence noise and vibration levels. Extreme temperatures can lead to increased noise generation and vibration, affecting the overall operation of machinery.
- Lubricant Degradation:
Environmental factors like humidity, dust, and contaminants can lead to premature lubricant degradation. Oxidation, moisture absorption, and the presence of foreign particles can compromise the lubricant’s performance and contribute to increased friction and wear.
- Seal Effectiveness:
Seals and shields that protect bearings from contaminants can be affected by temperature fluctuations. Extreme temperatures can lead to seal hardening, cracking, or deformation, compromising their effectiveness in preventing contamination.
- Choosing Appropriate Bearings:
When selecting ball bearings for specific applications, engineers must consider the expected temperature and environmental conditions. High-temperature bearings, bearings with specialized coatings, and those with enhanced sealing mechanisms may be necessary to ensure reliable performance.
Overall, understanding the impact of temperature and environmental conditions on ball bearing performance is crucial for proper bearing selection, maintenance, and ensuring optimal operation in diverse industries and applications.
Can you Explain the Various Types of Ball Bearings and their Specific Use Cases?
Ball bearings come in various types, each designed to meet specific application requirements. Here’s an overview of the different types of ball bearings and their specific use cases:
- Deep Groove Ball Bearings:
Deep groove ball bearings are the most common and versatile type. They have a deep raceway that allows them to handle both radial and axial loads. They are used in a wide range of applications, including electric motors, household appliances, automotive components, and industrial machinery.
- Angular Contact Ball Bearings:
Angular contact ball bearings have a contact angle that enables them to handle both radial and axial loads at specific angles. They are suitable for applications where combined loads or thrust loads need to be supported, such as in machine tool spindles, pumps, and agricultural equipment.
- Self-Aligning Ball Bearings:
Self-aligning ball bearings have two rows of balls and are designed to accommodate misalignment between the shaft and the housing. They are used in applications where shaft deflection or misalignment is common, such as conveyor systems, textile machinery, and paper mills.
- Thrust Ball Bearings:
Thrust ball bearings are designed to support axial loads in one direction. They are commonly used in applications where axial loads need to be supported, such as in automotive transmissions, steering systems, and crane hooks.
- Single-Row vs. Double-Row Bearings:
Single-row ball bearings have a single set of balls and are suitable for moderate load and speed applications. Double-row ball bearings have two sets of balls and offer higher load-carrying capacity. Double-row designs are used in applications such as machine tool spindles and printing presses.
- Miniature and Instrument Ball Bearings:
Miniature ball bearings are smaller in size and are used in applications with limited space and lower load requirements. They are commonly used in small electric motors, medical devices, and precision instruments.
- Max-Type and Conrad Bearings:
Max-type ball bearings have a larger number of balls to increase load-carrying capacity. Conrad bearings have fewer balls and are used in applications with moderate loads and speeds.
- High-Precision Ball Bearings:
High-precision ball bearings are designed for applications where accuracy and precision are critical, such as machine tool spindles, aerospace components, and optical instruments.
- High-Speed Ball Bearings:
High-speed ball bearings are engineered to minimize friction and accommodate rapid rotation. They are used in applications such as dental handpieces, turbochargers, and centrifuges.
In summary, the various types of ball bearings are tailored to different application requirements, including load type, direction, speed, and environmental conditions. Selecting the appropriate type of ball bearing ensures optimal performance and longevity in specific applications.
editor by CX 2024-05-14
China OEM Rks. 425060101001 Slewing Bearings/Turntable Bearing/Ball Bearing wheel bearing
Product Description
RKS.slewing bearings,1475.5x1080x110mm, inner gear, raceway hardness:55-62HRC
Four-point contact ball slewing turntable bearings
consist of 2 ring seats. Compact structure, light weight, steel ball and arc track contact at 4 points, can bear axial force, radial force and overturning moment at the same time, has strong dynamic load.
Single row cross roller slewing bearing
Composed of 2 or 3 rings. compact structure, light weight, high manufacturing accuracy, small assembly gap and high requirement for installation accuracy. Rollers are 1:1 cross-arranged.
Can be bear axial force, overturning moment and large radial force at the same time,and widely used in lifting transportation, construction machinery and precesion products.
Double row ball slewing bearings
This kind of bearings can support high static loads with simple structures. They are mainly used in situations with variation load position and direction and continuously rotating. Main applications of this kind of bearings are deck hoisting, mining and material handling etc.
Three row roller slewing bearing
Three row roller bearing CZPT to bear all kinds of loads at the same time, it is the largest 1 of the 4 structural products with large axle and radial dimensions and firm structure. Especially suitable for heavy machinery requiring larger diameter, such as bucket wheel stacker and reclaimer, wheel crane, marine crane, port crane, ladle turret,large tonnage truck crane,heavy machinery and so on.
product-list-1.html
| Type | • Single row 4 point contact ball slewing bearing • Single row crossed cylindrical roller slewing bearings • Double row ball slewing bearings •Double row Roller/ball combination slewing bearing •Three-Row Roller Slew Ring Bearing |
| Rolling elements | Steel ball / Cylinder Roller |
| Rolling elements Material | GCr5/GCr15SiMn/Customized |
| Bearing Material | 50Mn/42CrMo/42CrMo4V /Customized |
| Cage Material | Nylon/ steel /copper |
| Structure | taper pin , Mounting holes,Inner ring ,grease fitting,load plug, seals , roller ,spacer balls or separators |
| Outer diameter | 50-10000mm |
| Bore size | 50-10000mm |
| Mounting hole | Through hole/Tapped hole |
| Raceway hardness | 55-62HRC |
| Inner and outer ring modulation hardness |
229-269HB/Customized |
| Gear type | No gear ,Internal gear , External gear. |
| Embellish grease | EP2 lithium lubricating grease |
| Certificate | ABS.BV,DNV,ISO9001,GL,3.1,3.2 |
| Application area | Ladle turret,Stacker crane,Bucket wheel machine,Solar heliostat Tracking System,port crane, Cabling machine,tower crane , offshore platform,ferris wheel, Palletizing robot,Rotary metallurgical furnace,can packing machine,Wind blade transporter,shield tunneling machine,tube push bench,excavator |
| Brand Name | LYMC |
| Place of Origin | HangZhou ZheJiang |
| Warranty | 12 months |
| Payment term | T/T is our first choice |
|
Packing details |
1,Filling with anti-rust oil 2.Corved with Plastic paper 3.Corved with kraft paper 4.Corved with Blue tie 5.Put in wooden box |
Product Process
Application:
– Excavators – Drilling rigs – Mining Equipments – Cranes -Offshore Equipments – Vehicles – Machine Tools – Wind Turbines
About Us:
HangZhou MC Bearing Technology Co.,Ltd (LYMC),who is manufacture located in bearing zone, focus on Slewing bearing, cross roller bearing and pinion,Dia from 50mm-8000mm, Our team with technical and full experience in the bearing industry.
*Professional in researching, developing, producing & marketing high precision bearings for 16 years;
*Many series bearings are on stock; Factory directly provide, most competitive price;
*Advanced CNC equipment, guarantee product accuracy & stability;
*One stop purchasing, product include cross roller bearing, rotary table bearing, robotic bearing, slewing bearing, angular contact ball bearing, large and extra large custom made bearing, diameter from 50~9000mm;
*Excellent pre-sale & after sale service. We can go to customers’ project site if needed.
*Professional technical & exporting team ensure excellent product design, quotation, delivering, documentation & custom clearance.
Our Service:
FAQ:
1.Q: Are you trading company or manufacturer ?
A: We are professional slewing bearing manufacturer with 20 years’ experience.
2.Q: How long is your delivery time?
A: Generally it is 4-5 days if the goods are in stock. or it is 45 days if the goods are not in
stock, Also it is according to quantity.
3.Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample, it is extra.
4.Q: What is your terms of payment ?
A: Payment=1000USD, 30% T/T in advance, balance before shipment.
5.Q: Can you provide special customization according to the working conditions?
A: Sure, we can design and produce the slewing bearings for different working conditions.
6.Q: How about your guarantee?
A: We provide lifelong after-sales technical service.
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Standard or Nonstandard: | Standard |
|---|---|
| Feature: | High Speed, Cold-Resistant, Corrosion-Resistant, Heat-Resistant |
| Sealing Gland: | Sealed On Both Sides |
| Rolling-Element Number: | Single-Row |
| Roller Type: | Straight Raceway |
| Material: | 50mn/42CrMo |
| Samples: |
US$ 0/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
What are the Challenges Associated with Noise Reduction in Ball Bearings?
Noise reduction in ball bearings is a crucial consideration, especially in applications where noise levels must be minimized for operational efficiency and user comfort. While ball bearings are designed to operate smoothly, there are several challenges associated with reducing noise in their operation:
- Vibration:
Vibration generated by the movement of rolling elements and raceways can lead to noise. Even minor irregularities in bearing components or the mounting system can cause vibration that translates into audible noise.
- Bearing Type and Design:
The type and design of the ball bearing can impact noise generation. For example, deep groove ball bearings are known for their quiet operation, while angular contact bearings can generate more noise due to their higher contact angles.
- Lubrication:
Improper or inadequate lubrication can result in increased friction and wear, leading to noise. Choosing the right lubricant and maintaining proper lubrication levels are essential for reducing noise in ball bearings.
- Bearing Clearance and Preload:
Incorrect clearance or preload settings can lead to noise issues. Excessive clearance or inadequate preload can cause the rolling elements to impact the raceways, resulting in noise during rotation.
- Material and Manufacturing Quality:
The quality of materials and manufacturing processes can affect noise levels. Inconsistent or low-quality materials, improper heat treatment, or manufacturing defects can lead to noise generation during operation.
- Surface Finish:
The surface finish of the rolling elements and raceways can impact noise. Rough surfaces can generate more noise due to increased friction and potential irregularities.
- Sealing and Shielding:
Seals and shields that protect bearings can influence noise levels. While they are necessary for contamination prevention, they can also cause additional friction and generate noise.
- Operating Conditions:
External factors such as temperature, speed, and load can influence noise levels. High speeds or heavy loads can amplify noise due to increased stress on the bearing components.
- Wear and Deterioration:
As ball bearings wear over time, noise levels can increase. Worn components or inadequate lubrication can lead to more significant noise issues as the bearing operates.
To address these challenges and reduce noise in ball bearings, manufacturers and engineers employ various techniques, such as optimizing design, selecting suitable bearing types, using proper lubrication, maintaining accurate preload settings, and ensuring high-quality materials and manufacturing processes. Noise reduction efforts are essential to improve overall product quality, meet noise regulations, and enhance user experience in various applications.
How do Temperature and Environmental Conditions Affect the Performance of Ball Bearings?
Temperature and environmental conditions have a significant impact on the performance and longevity of ball bearings. The operating environment can influence factors such as lubrication effectiveness, material properties, and overall bearing behavior. Here’s how temperature and environmental conditions affect ball bearing performance:
- Lubrication:
Temperature variations can affect the viscosity and flow characteristics of lubricants. Extreme temperatures can cause lubricants to become too thin or too thick, leading to inadequate lubrication and increased friction. In high-temperature environments, lubricants can degrade, reducing their effectiveness.
- Material Properties:
Temperature changes can alter the material properties of the bearing components. High temperatures can lead to thermal expansion, affecting bearing clearances and potentially causing interference between components. Extreme cold temperatures can make materials more brittle and prone to fracture.
- Clearance Changes:
Temperature fluctuations can cause changes in the internal clearance of ball bearings. For instance, at high temperatures, materials expand, leading to increased clearance. This can affect bearing performance, load distribution, and overall stability.
- Corrosion and Contamination:
Harsh environmental conditions, such as exposure to moisture, chemicals, or abrasive particles, can lead to corrosion and contamination of bearing components. Corrosion weakens the material, while contamination accelerates wear and reduces bearing life.
- Thermal Stress:
Rapid temperature changes can result in thermal stress within the bearing components. Differential expansion and contraction between the inner and outer rings can lead to stress and distortion, affecting precision and bearing integrity.
- Noise and Vibration:
Temperature-related changes in material properties and internal clearances can influence noise and vibration levels. Extreme temperatures can lead to increased noise generation and vibration, affecting the overall operation of machinery.
- Lubricant Degradation:
Environmental factors like humidity, dust, and contaminants can lead to premature lubricant degradation. Oxidation, moisture absorption, and the presence of foreign particles can compromise the lubricant’s performance and contribute to increased friction and wear.
- Seal Effectiveness:
Seals and shields that protect bearings from contaminants can be affected by temperature fluctuations. Extreme temperatures can lead to seal hardening, cracking, or deformation, compromising their effectiveness in preventing contamination.
- Choosing Appropriate Bearings:
When selecting ball bearings for specific applications, engineers must consider the expected temperature and environmental conditions. High-temperature bearings, bearings with specialized coatings, and those with enhanced sealing mechanisms may be necessary to ensure reliable performance.
Overall, understanding the impact of temperature and environmental conditions on ball bearing performance is crucial for proper bearing selection, maintenance, and ensuring optimal operation in diverse industries and applications.
What are the Primary Benefits of Using Ball Bearings in Machinery and Equipment?
Ball bearings offer several primary benefits when used in machinery and equipment. Their design and functionality provide advantages that contribute to the efficient and reliable operation of various applications. Here are the key benefits:
- Reduced Friction:
One of the primary benefits of ball bearings is their ability to minimize friction between moving parts. The rolling motion of the balls reduces the contact area and sliding friction, leading to smoother operation and less energy loss due to frictional heating.
- Efficient Load Support:
Ball bearings are engineered to support both radial and axial loads, making them versatile for applications with multidirectional forces. This load-bearing capability allows machinery to handle different types of loads while maintaining performance and stability.
- Smooth Rotation:
Ball bearings enable smooth and precise rotational movement. The rolling motion of the balls provides consistent motion with minimal resistance, ensuring that machinery operates smoothly and without jerks.
- High-Speed Capability:
Due to their low friction and efficient rolling action, ball bearings are suitable for high-speed applications. They allow machinery and equipment to achieve and maintain high rotational speeds without excessive wear or heat buildup.
- Reduced Wear and Maintenance:
The reduced friction in ball bearings leads to lower wear on components. This results in longer service intervals and reduced maintenance requirements, saving both time and maintenance costs.
- Energy Efficiency:
By minimizing friction and reducing energy losses, ball bearings contribute to the overall energy efficiency of machinery. This is particularly important in applications where energy consumption is a concern.
- Versatility:
Ball bearings come in various types, sizes, and configurations, allowing them to be used in a wide range of machinery and equipment. They can be customized to suit specific application requirements.
- Reliability and Longevity:
Ball bearings are designed to withstand heavy loads and harsh operating conditions. Their durability and resistance to wear ensure reliable performance and an extended operational life.
- Quiet Operation:
Ball bearings contribute to quiet machinery operation due to the smooth rolling motion of the balls. This is particularly important in applications where noise reduction is a consideration.
In summary, the primary benefits of using ball bearings in machinery and equipment include reduced friction, efficient load support, smooth rotation, high-speed capability, reduced wear and maintenance, energy efficiency, versatility, reliability, and quiet operation. These benefits collectively enhance the performance and longevity of machinery across various industries.
editor by CX 2024-05-08
China high quality Ball Slewing Bearing Slewing Ring Bearing with Internal Gear 180-00297D3 for Excavator 255LC-V carrier bearing
Product Description
1. Company introduction
HangZhou King Slewing Bearing Technology Co.,Ltd.is a professional manufacturer and exporter of excavator slewing rings, its factory is located in HangZhou city, ZheJiang Province,very close to ZheJiang Port, goods can be easily transported all over the world.
Our main product is excavator slewing rings, we can now produce more than 1000 part numbers to match with many famous excavator brands, such as CATERPILLAR, KOMATSU, HITACHI, KOBELCO, HYUNDAI, VOLVO, DOOSAN, LIEBHERR, DAEWOO, JCB,CASE, SUMITOMO, KATO,etc.
Our engineers have more than 20 years rich experience in studying excavator slewing rings and we have professional measuring team can go to customers ‘ workplace to measure the old or broken slewing rings, then to produce the same replacements. We have our own factory with latest CNC machines , such as vertical lathes, gear hobbing machines, gear shaping machines, hole drilling mahines, quenching machines, vertical grinding machines, turning machines,etc. to meet customers’ quick delivery requirements.
We will adhere to the “quality first, credibility first” business philosophy and continually provide our clients with superior quality products and services. We warmly welcome customers from all over the world to visit us and together to build a better future !
2. Our slewing rings can match with more than 1000 excavator models.
3. Our excavator part numbers as below:
| Doosan Slewing Ring Replacement | |||
| Excavator model number | Part number | Excavator model number | Part number |
| S140LC-V | 109-00165 | 255lc-v | 145719-00043 |
| SOLAR55-VPLUS | 109-00149 | 300-v | 109-00157 |
| DH220LC | 145719-00048A | DX300LCA | 145719-0571 |
| DX225 | 109-00162 | Dx300LCA | 145719-0571A |
| DX225LC | 109-00162A | S340 | 145719-00038 |
| DX225LC | 109-00162 | S340LC-V | 145719-00038 |
| DX225LCA | 109-00162A | S340LC-V | 2109-1059A (New Part Number) |
| DX225LCA | 145719-00048 | S400LC-3 | 2109-9047A |
| S225NLC-V | 145719-00045 | DOOSAN 420 | 145719-00039 |
| SL220LC-V | 109-00052 | S420LC-V | 109-00161 |
| 225NLC-V | 109-00052B | DX420LC | K15719 |
| 225NLC-V | 145719-00045 | DX420LC | 109-00046 |
| 255LC-V | 109-00030B | DX420LC | 145719-00007A |
| 255LC-V | 180-5717D3 | 470 | 109-00159 |
| 255lc-v | 145719-00042 | SOLAR 500LC-V | 145719-00040 |
4. Our excavator slewing ring pictures
5. Our slewing bearing packaging pictures
6. Transportation way: By sea/ air/ rail/ road/ TNT/DHL/UPS/Fedex,ect.
7. Contact information
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Standard or Nonstandard: | Standard |
|---|---|
| Feature: | Short Delivery Time |
| Sealing Gland: | We Use Seal Rings |
| Rolling-Element Number: | Single Row, Three Row for Huge Slewing Bearing |
| Roller Type: | Four Point Contact |
| Material: | Alloy Steel |
| Samples: |
US$ 1700/Set
1 Set(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
What are the Materials Typically Used in Manufacturing Ball Bearings and Their Advantages?
Ball bearings are manufactured using a variety of materials, each chosen for its specific properties and advantages in various applications. Here are some commonly used materials in ball bearing manufacturing and their respective benefits:
- High-Carbon Chrome Steel (AISI 52100):
This is the most common material used for ball bearing manufacturing. It offers excellent hardness, wear resistance, and fatigue strength. High-carbon chrome steel bearings are suitable for a wide range of applications, from industrial machinery to automotive components.
- Stainless Steel (AISI 440C, AISI 304, AISI 316):
Stainless steel bearings are corrosion-resistant and suitable for applications where moisture, chemicals, or exposure to harsh environments are concerns. AISI 440C offers high hardness and corrosion resistance, while AISI 304 and AISI 316 provide good corrosion resistance and are often used in food and medical industries.
- Ceramic:
Ceramic bearings use silicon nitride (Si3N4) or zirconia (ZrO2) balls. Ceramic materials offer high stiffness, low density, and excellent resistance to corrosion and heat. Ceramic bearings are commonly used in high-speed and high-temperature applications, such as in aerospace and racing industries.
- Plastic (Polyamide, PEEK):
Plastic bearings are lightweight and offer good corrosion resistance. Polyamide bearings are commonly used due to their low friction and wear properties. Polyether ether ketone (PEEK) bearings provide high-temperature resistance and are suitable for demanding environments.
- Bronze:
Bronze bearings are often used in applications where self-lubrication is required. Bronze has good thermal conductivity and wear resistance. Bearings made from bronze are commonly used in machinery requiring frequent starts and stops.
- Hybrid Bearings:
Hybrid bearings combine steel rings with ceramic balls. These bearings offer a balance between the advantages of both materials, such as improved stiffness and reduced weight. Hybrid bearings are used in applications where high speeds and low friction are essential.
- Specialty Alloys:
For specific applications, specialty alloys may be used to meet unique requirements. For example, bearings used in extreme temperatures or corrosive environments may be made from materials like titanium or hastelloy.
- Coated Bearings:
Bearings may also be coated with thin layers of materials like diamond-like carbon (DLC) or other coatings to enhance performance, reduce friction, and improve wear resistance.
The choice of material depends on factors such as application requirements, operating conditions, load, speed, and environmental factors. Selecting the right material is essential for ensuring optimal bearing performance, longevity, and reliability in diverse industries and applications.
Are there any Industry Standards or Certifications that Ball Bearings should Meet?
Yes, there are several industry standards and certifications that ball bearings should meet to ensure their quality, performance, and reliability. These standards help manufacturers, engineers, and customers assess the suitability of bearings for specific applications. Some of the key standards and certifications for ball bearings include:
- ISO Standards:
The International Organization for Standardization (ISO) has developed a series of standards related to ball bearings. ISO 15 defines dimensions, boundary dimensions, and tolerances for radial bearings. ISO 281 specifies dynamic load ratings and calculation methods for bearings’ life calculations.
- ABEC (Annular Bearing Engineering Committee) Ratings:
ABEC ratings are commonly used in North America to indicate the precision and performance of ball bearings. Ratings range from ABEC 1 (lowest precision) to ABEC 9 (highest precision). However, it’s important to note that ABEC ratings focus primarily on dimensional tolerances and do not encompass all aspects of bearing quality.
- DIN Standards:
The German Institute for Standardization (Deutsches Institut für Normung, DIN) has published various standards related to ball bearings. DIN 625 covers dimensions for deep groove ball bearings, while DIN 616 provides guidelines for precision angular contact ball bearings.
- JIS (Japanese Industrial Standards):
JIS standards are used in Japan and internationally to define the characteristics and dimensions of various products, including ball bearings. JIS B 1512 outlines the classification and dimensions of rolling bearings.
- ASTM (American Society for Testing and Materials) Standards:
ASTM has standards that cover various aspects of bearing testing, performance, and materials. ASTM F2215, for instance, specifies the requirements for ball bearings used in surgical implants.
- CE Marking:
CE marking indicates that a product complies with European Union health, safety, and environmental requirements. It may be required for bearings used in machinery intended to be sold within the EU market.
- Industry-Specific Standards:
Various industries, such as aerospace, automotive, medical, and nuclear, have specific standards or certifications that bearings must meet to ensure safety, reliability, and compliance with industry-specific requirements.
- Quality Management Systems:
Manufacturers that adhere to quality management systems, such as ISO 9001, demonstrate their commitment to consistent product quality and customer satisfaction. Certification to these systems indicates that the manufacturing process follows established protocols and best practices.
When selecting ball bearings, it’s important to consider the relevant standards and certifications that align with the application’s requirements. This ensures that the bearings meet recognized quality and performance criteria, ultimately contributing to reliable and efficient operation.
What is a Ball Bearing and How does it Function in Various Applications?
A ball bearing is a type of rolling-element bearing that uses balls to reduce friction between moving parts and support radial and axial loads. It consists of an outer ring, an inner ring, a set of balls, and a cage that separates and maintains a consistent spacing between the balls. Here’s how ball bearings function in various applications:
- Reduction of Friction:
Ball bearings function by replacing sliding friction with rolling friction. The smooth, spherical balls minimize the contact area between the inner and outer rings, resulting in lower friction and reduced heat generation.
- Radial and Axial Load Support:
Ball bearings are designed to support both radial loads (forces perpendicular to the shaft’s axis) and axial loads (forces parallel to the shaft’s axis). The distribution of balls within the bearing ensures load-carrying capacity in multiple directions.
- Smooth Rotational Movement:
Ball bearings facilitate smooth and precise rotational movement. The rolling motion of the balls allows for controlled and continuous rotation with minimal resistance.
- Applications in Machinery:
Ball bearings are used in a wide range of machinery and equipment, including motors, generators, gearboxes, conveyors, and fans. They enable the efficient transfer of motion while reducing wear and energy losses.
- Automotive Industry:
Ball bearings are extensively used in automobiles for various applications, including wheel hubs, transmission systems, steering mechanisms, and engine components. They provide reliability and durability in challenging automotive environments.
- Industrial Machinery:
In industrial settings, ball bearings support rotating shafts and ensure the smooth operation of equipment such as pumps, compressors, and machine tools.
- High-Speed Applications:
Ball bearings are suitable for high-speed applications due to their low friction and ability to accommodate rapid rotation. They are used in applications like electric motors and aerospace components.
- Precision Instruments:
For precision instruments, such as watches, cameras, and medical devices, ball bearings provide accurate rotational movement and contribute to the overall performance of the instrument.
- Variety of Sizes and Types:
Ball bearings come in various sizes, configurations, and materials to suit different applications. Different types include deep groove ball bearings, angular contact ball bearings, thrust ball bearings, and more.
In summary, ball bearings are essential components in a wide range of applications where smooth rotation, load support, and reduced friction are critical. Their versatility, reliability, and efficiency make them indispensable in industries spanning from automotive to industrial machinery to precision instruments.
editor by CX 2024-05-03
China factory Small Trailer Ball Bearing Turntable Slewing Ring Tower Crane Slewing Bearing bearing engineering
Product Description
Turntable for semi-trailers, full trailers and tractors
Brand: UT
Section Type: U, UA, UB, UC, ZA, ZB
Material: Nodular Cast Iron
Capacity:0.8t~30T
Size: 400mm~1300mm
Unit Weight: 28kg~125kg
Color: Black, Red, Blue or as your requirements
Surface treatment: Antirust Painting or as your requirements
Design: Common type or Special design according to the requirement, we have developed about 500 series. We can design and produce fully according with your drawing.
Quality Assurance: ISO9001:2008
Main Market: South-east Asia, Europe, South America, Africa, Australia, Middle East, Russia etc
Coule be same design as JOST , BPW, RIMA
Model Number:UT1050-58ZA
| 1. Type: Full Trailer |
| 2. Material:QT5007 Iron |
| 3. Diameter: 1050mm |
| 5. Max Payload: about 5T |
| 6. Weight: about 60 kg |
| 7. Height:58mm |
| 8. Function:Turning Rotating |
| 9. Workmanship:Casting |
| 10. Technology:: Original from Germany |
| 11. Package: About 450 Pieces in 1x20GP Container; By Wooden / Steel Pallets. |
| FAQ |
| 1. MOQ:10 pieces |
| 2. Lead time: About 15 – 30 Working Days, specific lead time is according with the quantity |
| 3. Payment terms: T/T or L/C at sight |
| 4. Production ability: 2000 pieces per month |
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Type: | Trailer Turntable |
|---|---|
| Certification: | ISO9001, SGS |
| Load Capacity: | 5 Tons |
| Diameter: | 100-1200mm |
| Transport Package: | Pallets |
| Specification: | ISO 9001: 2008 |
| Samples: |
US$ 100/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
How does Preload Affect the Performance and Efficiency of Ball Bearings?
Preload is a crucial factor in ball bearing design that significantly impacts the performance, efficiency, and overall behavior of the bearings in various applications. Preload refers to the intentional axial force applied to the bearing’s rolling elements before it is mounted. This force eliminates internal clearance and creates contact between the rolling elements and the raceways. Here’s how preload affects ball bearing performance:
- Reduction of Internal Clearance:
Applying preload reduces the internal clearance between the rolling elements and the raceways. This eliminates play within the bearing, ensuring that the rolling elements are in constant contact with the raceways. This reduced internal clearance enhances precision and reduces vibrations during operation.
- Increased Stiffness:
Preloaded bearings are stiffer due to the elimination of internal clearance. This increased stiffness improves the bearing’s ability to handle axial and radial loads with higher accuracy and minimal deflection.
- Minimized Axial Play:
Preload minimizes or eliminates axial play within the bearing. This is especially important in applications where axial movement needs to be minimized, such as machine tool spindles and precision instruments.
- Enhanced Rigidity:
The stiffness resulting from preload enhances the bearing’s rigidity, making it less susceptible to deformation under load. This is critical for maintaining precision and accuracy in applications that require minimal deflection.
- Reduction in Ball Slippage:
Preload reduces the likelihood of ball slippage within the bearing, ensuring consistent contact between the rolling elements and the raceways. This leads to improved efficiency and better load distribution.
- Improved Running Accuracy:
Preloading enhances the running accuracy of the bearing, ensuring that it maintains precise rotational characteristics even under varying loads and speeds. This is essential for applications requiring high accuracy and repeatability.
- Optimized Performance at High Speeds:
Preload helps prevent skidding and slipping of the rolling elements during high-speed operation. This ensures that the bearing remains stable, reducing the risk of noise, vibration, and premature wear.
- Impact on Friction and Heat Generation:
While preload reduces internal clearance and friction, excessive preload can lead to higher friction and increased heat generation. A balance must be struck between optimal preload and minimizing friction-related issues.
- Application-Specific Considerations:
The appropriate amount of preload depends on the application’s requirements, such as load, speed, accuracy, and operating conditions. Over-preloading can lead to increased stress and premature bearing failure, while under-preloading may result in inadequate rigidity and reduced performance.
Overall, preload plays a critical role in optimizing the performance, accuracy, and efficiency of ball bearings. Engineers must carefully determine the right preload level for their specific applications to achieve the desired performance characteristics and avoid potential issues related to overloading or inadequate rigidity.
What Precautions should be taken to Prevent Contamination of Ball Bearings in Industrial Settings?
Preventing contamination of ball bearings is essential to ensure their proper function, longevity, and overall performance in industrial settings. Contaminants such as dust, dirt, debris, and particles can significantly impact bearing operation. Here are important precautions to take to prevent contamination of ball bearings:
- Effective Sealing:
Choose ball bearings with appropriate seals or shields to prevent the ingress of contaminants. Seals provide a physical barrier against dust, moisture, and particles, ensuring the bearing’s interior remains clean.
- Clean Environment:
Maintain a clean working environment around the machinery and equipment. Regularly clean the surrounding areas to prevent the accumulation of dirt and debris that could enter the bearings.
- Proper Handling:
Handle bearings with clean hands and use gloves if necessary. Avoid touching the bearing surfaces with bare hands, as natural skin oils can transfer contaminants onto the bearing.
- Clean Tools and Equipment:
Use clean tools and equipment during installation and maintenance to prevent introducing contaminants. Ensure that tools are properly cleaned before coming into contact with the bearing components.
- Contamination-Controlled Workstations:
Establish contamination-controlled workstations for bearing handling, installation, and maintenance. These areas should have proper ventilation, filtered air, and minimal exposure to external contaminants.
- Proper Lubrication:
Use the correct lubricant in appropriate quantities. Lubricants help create a barrier against contaminants and reduce friction. Regularly inspect and replenish lubrication to maintain its effectiveness.
- Regular Inspections:
Implement a routine inspection schedule to monitor the condition of the bearings. Look for signs of contamination, wear, and damage. Address any issues promptly to prevent further damage.
- Training and Education:
Train personnel on proper handling, installation, and maintenance practices to minimize the risk of contamination. Educated employees are more likely to take precautions and prevent accidental contamination.
- Environmental Controls:
In sensitive environments, such as clean rooms or medical facilities, implement strict environmental controls to minimize the presence of contaminants that could affect bearing performance.
- Regular Cleaning and Maintenance:
Perform regular cleaning and maintenance of machinery and equipment to prevent the buildup of contaminants. Keep bearings protected during maintenance to prevent debris from entering during the process.
- Selection of Suitable Bearings:
Choose bearings that are specifically designed for the application’s environmental conditions. Some bearings have advanced sealing options or specialized coatings that enhance contamination resistance.
By implementing these precautions, industries can significantly reduce the risk of contamination in ball bearings, ensuring smooth operation, extended bearing life, and enhanced equipment reliability.
What is a Ball Bearing and How does it Function in Various Applications?
A ball bearing is a type of rolling-element bearing that uses balls to reduce friction between moving parts and support radial and axial loads. It consists of an outer ring, an inner ring, a set of balls, and a cage that separates and maintains a consistent spacing between the balls. Here’s how ball bearings function in various applications:
- Reduction of Friction:
Ball bearings function by replacing sliding friction with rolling friction. The smooth, spherical balls minimize the contact area between the inner and outer rings, resulting in lower friction and reduced heat generation.
- Radial and Axial Load Support:
Ball bearings are designed to support both radial loads (forces perpendicular to the shaft’s axis) and axial loads (forces parallel to the shaft’s axis). The distribution of balls within the bearing ensures load-carrying capacity in multiple directions.
- Smooth Rotational Movement:
Ball bearings facilitate smooth and precise rotational movement. The rolling motion of the balls allows for controlled and continuous rotation with minimal resistance.
- Applications in Machinery:
Ball bearings are used in a wide range of machinery and equipment, including motors, generators, gearboxes, conveyors, and fans. They enable the efficient transfer of motion while reducing wear and energy losses.
- Automotive Industry:
Ball bearings are extensively used in automobiles for various applications, including wheel hubs, transmission systems, steering mechanisms, and engine components. They provide reliability and durability in challenging automotive environments.
- Industrial Machinery:
In industrial settings, ball bearings support rotating shafts and ensure the smooth operation of equipment such as pumps, compressors, and machine tools.
- High-Speed Applications:
Ball bearings are suitable for high-speed applications due to their low friction and ability to accommodate rapid rotation. They are used in applications like electric motors and aerospace components.
- Precision Instruments:
For precision instruments, such as watches, cameras, and medical devices, ball bearings provide accurate rotational movement and contribute to the overall performance of the instrument.
- Variety of Sizes and Types:
Ball bearings come in various sizes, configurations, and materials to suit different applications. Different types include deep groove ball bearings, angular contact ball bearings, thrust ball bearings, and more.
In summary, ball bearings are essential components in a wide range of applications where smooth rotation, load support, and reduced friction are critical. Their versatility, reliability, and efficiency make them indispensable in industries spanning from automotive to industrial machinery to precision instruments.
editor by CX 2024-04-29
China manufacturer High Precision Four Point Contact Ball Type Slewing Ring Bearing double row ball bearing
Product Description
Product Description
|
Materia |
Carbon Steel , Alloy Steel |
|||
|
Standard |
ASTM DIN . EN GOST JIS ETC |
|||
|
Structure |
Forging , Casting and Welding |
|||
|
Module of Gear |
8-120 |
|||
|
Gear Grinding |
MAX Module 24 |
|||
|
Diameter of Gear Wheel : |
MAX 13 000 mm |
|||
|
Diameter of Spiral Gear : |
MAX . 2 200 mm |
|||
|
Length of Gear Shaft : |
MAX 5 000 mm |
|||
|
OEM Service Offered |
According to Customer Drawings |
|||
|
Segments Gear Offered : |
According to Customer Requests |
|||
|
Heat Treatment |
Q & T Case Hardening |
|||
FAQ
1. Are you a businessman or a manufacturer?
We are an enterprise integrating industry and trade, and our factory is located in ZheJiang Province.
2. What are the terms of payment?
We usually accept T/T or L/C.Other terms are negotiable.
3. What is your minimum order quantity?
It depends on what you buy.Under normal circumstances, our minimum order quantity is 1 piece.
4. What’s your delivery time?
Our lead time is only 3-7 days if stock is available.If it is our standard type, the delivery time is about 25 days, if it is not standard type, the delivery time is 45~50 days.
5. What about quality control?
We have a perfect quality management system to produce perfect products.Responsible for the careful testing of product quality and specifications, monitoring each production process until packaging is completed to ensure product safety into the container.
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Standard or Nonstandard: | Nonstandard |
|---|---|
| Feature: | Corrosion-Resistant |
| Sealing Gland: | Non-Seal |
| Rolling-Element Number: | Multiple-Column |
| Roller Type: | Deep Groove Raceway |
| Material: | Alloy |
| Samples: |
US$ 5000/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
Can you Provide Examples of Industries where Ball Bearings are Crucial Components?
Ball bearings are essential components in a wide range of industries where smooth motion, load support, and precision are vital. Here are some examples of industries where ball bearings play a crucial role:
- Automotive Industry:
Ball bearings are used in various automotive applications, including wheel hubs, transmissions, engines, steering systems, and suspension components. They provide reliable rotation and support in both passenger vehicles and commercial vehicles.
- Aerospace Industry:
In the aerospace sector, ball bearings are found in aircraft engines, landing gear systems, control surfaces, and avionics equipment. Their ability to handle high speeds and precision is vital for aviation safety.
- Industrial Machinery:
Ball bearings are integral to a wide range of industrial machinery, including pumps, compressors, conveyors, machine tools, printing presses, and textile machinery. They facilitate smooth operation and load distribution in these diverse applications.
- Medical Equipment:
In medical devices and equipment, ball bearings are used in surgical instruments, imaging equipment, dental tools, and laboratory machinery. Their precision and smooth movement are crucial for accurate diagnostics and treatments.
- Robotics and Automation:
Ball bearings are key components in robotic arms, automation systems, and manufacturing machinery. They enable precise movement, high-speed operation, and reliable performance in automated processes.
- Renewable Energy:
Wind turbines and solar tracking systems utilize ball bearings to enable efficient rotation and tracking of the wind blades and solar panels. Ball bearings withstand the dynamic loads and environmental conditions in renewable energy applications.
- Marine and Shipbuilding:
Ball bearings are used in marine applications such as ship propulsion systems, steering mechanisms, and marine pumps. They withstand the corrosive environment and provide reliable performance in maritime operations.
- Heavy Equipment and Construction:
In construction machinery like excavators, bulldozers, and cranes, ball bearings support the movement of heavy loads and enable efficient operation in demanding environments.
- Electronics and Consumer Appliances:
Consumer electronics like electric motors, computer hard drives, and household appliances rely on ball bearings for smooth motion and reliable operation.
- Oil and Gas Industry:
In oil and gas exploration and extraction equipment, ball bearings are used in drilling rigs, pumps, and processing machinery. They handle the high loads and harsh conditions of this industry.
These examples demonstrate how ball bearings are indispensable components in various industries, contributing to the efficiency, reliability, and functionality of diverse mechanical systems and equipment.
How do Temperature and Environmental Conditions Affect the Performance of Ball Bearings?
Temperature and environmental conditions have a significant impact on the performance and longevity of ball bearings. The operating environment can influence factors such as lubrication effectiveness, material properties, and overall bearing behavior. Here’s how temperature and environmental conditions affect ball bearing performance:
- Lubrication:
Temperature variations can affect the viscosity and flow characteristics of lubricants. Extreme temperatures can cause lubricants to become too thin or too thick, leading to inadequate lubrication and increased friction. In high-temperature environments, lubricants can degrade, reducing their effectiveness.
- Material Properties:
Temperature changes can alter the material properties of the bearing components. High temperatures can lead to thermal expansion, affecting bearing clearances and potentially causing interference between components. Extreme cold temperatures can make materials more brittle and prone to fracture.
- Clearance Changes:
Temperature fluctuations can cause changes in the internal clearance of ball bearings. For instance, at high temperatures, materials expand, leading to increased clearance. This can affect bearing performance, load distribution, and overall stability.
- Corrosion and Contamination:
Harsh environmental conditions, such as exposure to moisture, chemicals, or abrasive particles, can lead to corrosion and contamination of bearing components. Corrosion weakens the material, while contamination accelerates wear and reduces bearing life.
- Thermal Stress:
Rapid temperature changes can result in thermal stress within the bearing components. Differential expansion and contraction between the inner and outer rings can lead to stress and distortion, affecting precision and bearing integrity.
- Noise and Vibration:
Temperature-related changes in material properties and internal clearances can influence noise and vibration levels. Extreme temperatures can lead to increased noise generation and vibration, affecting the overall operation of machinery.
- Lubricant Degradation:
Environmental factors like humidity, dust, and contaminants can lead to premature lubricant degradation. Oxidation, moisture absorption, and the presence of foreign particles can compromise the lubricant’s performance and contribute to increased friction and wear.
- Seal Effectiveness:
Seals and shields that protect bearings from contaminants can be affected by temperature fluctuations. Extreme temperatures can lead to seal hardening, cracking, or deformation, compromising their effectiveness in preventing contamination.
- Choosing Appropriate Bearings:
When selecting ball bearings for specific applications, engineers must consider the expected temperature and environmental conditions. High-temperature bearings, bearings with specialized coatings, and those with enhanced sealing mechanisms may be necessary to ensure reliable performance.
Overall, understanding the impact of temperature and environmental conditions on ball bearing performance is crucial for proper bearing selection, maintenance, and ensuring optimal operation in diverse industries and applications.
Can you Explain the Various Types of Ball Bearings and their Specific Use Cases?
Ball bearings come in various types, each designed to meet specific application requirements. Here’s an overview of the different types of ball bearings and their specific use cases:
- Deep Groove Ball Bearings:
Deep groove ball bearings are the most common and versatile type. They have a deep raceway that allows them to handle both radial and axial loads. They are used in a wide range of applications, including electric motors, household appliances, automotive components, and industrial machinery.
- Angular Contact Ball Bearings:
Angular contact ball bearings have a contact angle that enables them to handle both radial and axial loads at specific angles. They are suitable for applications where combined loads or thrust loads need to be supported, such as in machine tool spindles, pumps, and agricultural equipment.
- Self-Aligning Ball Bearings:
Self-aligning ball bearings have two rows of balls and are designed to accommodate misalignment between the shaft and the housing. They are used in applications where shaft deflection or misalignment is common, such as conveyor systems, textile machinery, and paper mills.
- Thrust Ball Bearings:
Thrust ball bearings are designed to support axial loads in one direction. They are commonly used in applications where axial loads need to be supported, such as in automotive transmissions, steering systems, and crane hooks.
- Single-Row vs. Double-Row Bearings:
Single-row ball bearings have a single set of balls and are suitable for moderate load and speed applications. Double-row ball bearings have two sets of balls and offer higher load-carrying capacity. Double-row designs are used in applications such as machine tool spindles and printing presses.
- Miniature and Instrument Ball Bearings:
Miniature ball bearings are smaller in size and are used in applications with limited space and lower load requirements. They are commonly used in small electric motors, medical devices, and precision instruments.
- Max-Type and Conrad Bearings:
Max-type ball bearings have a larger number of balls to increase load-carrying capacity. Conrad bearings have fewer balls and are used in applications with moderate loads and speeds.
- High-Precision Ball Bearings:
High-precision ball bearings are designed for applications where accuracy and precision are critical, such as machine tool spindles, aerospace components, and optical instruments.
- High-Speed Ball Bearings:
High-speed ball bearings are engineered to minimize friction and accommodate rapid rotation. They are used in applications such as dental handpieces, turbochargers, and centrifuges.
In summary, the various types of ball bearings are tailored to different application requirements, including load type, direction, speed, and environmental conditions. Selecting the appropriate type of ball bearing ensures optimal performance and longevity in specific applications.
editor by CX 2024-04-23
China Best Sales China Slewing Ring Bearing 062.25.1455.500.11.1503 with Internal Gear Ball Bearing for Forest machinery bearing assembly
Product Description
China Slewing Ring Bearing 062.25.1455.500.11.1503 With Internal Gear Ball Bearing For Forest Machiney
Four-point contact ball slewing turntable bearings
consist of 2 ring seats. Compact structure, light weight, steel ball and arc track contact at 4 points, can bear axial force, radial force and overturning moment at the same time, has strong dynamic load.
Single row cross roller slewing bearing
Composed of 2 or 3 rings. compact structure, light weight, high manufacturing accuracy, small assembly gap and high requirement for installation accuracy. Rollers are 1:1 cross-arranged.
Can be bear axial force, overturning moment and large radial force at the same time,and widely used in lifting transportation, construction machinery and precesion products.
Double row ball slewing bearings
This kind of bearings can support high static loads with simple structures. They are mainly used in situations with variation load position and direction and continuously rotating. Main applications of this kind of bearings are deck hoisting, mining and material handling etc.
Three row roller slewing bearing
Three row roller bearing CZPT to bear all kinds of loads at the same time, it is the largest 1 of the 4 structural products with large axle and radial dimensions and firm structure. Especially suitable for heavy machinery requiring larger diameter, such as bucket wheel stacker and reclaimer, wheel crane, marine crane, port crane, ladle turret,large tonnage truck crane,heavy machinery and so on.
| Type | • Single row 4 point contact ball slewing bearing • Single row crossed cylindrical roller slewing bearings • Double row ball slewing bearings •Double row Roller/ball combination slewing bearing •Three-Row Roller Slew Ring Bearing |
| Rolling elements | Steel ball / Cylinder Roller |
| Rolling elements Material | GCr5/GCr15SiMn/Customized |
| Bearing Material | 50Mn/42CrMo/42CrMo4V /Customized |
| Cage Material | Nylon/ steel /copper |
| Structure | taper pin , Mounting holes,Inner ring ,grease fitting,load plug, seals , roller ,spacer balls or separators |
| Outer diameter | 50-10000mm |
| Bore size | 50-10000mm |
| Mounting hole | Through hole/Tapped hole |
| Raceway hardness | 55-62HRC |
| Inner and outer ring modulation hardness |
229-269HB/Customized |
| Gear type | No gear ,Internal gear , External gear. |
| Embellish grease | EP2 lithium lubricating grease |
| Certificate | ABS.BV,DNV,ISO9001,GL,3.1,3.2 |
| Application area | Ladle turret,Stacker crane,Bucket wheel machine,Solar heliostat Tracking System,port crane, Cabling machine,tower crane , offshore platform,ferris wheel, Palletizing robot,Rotary metallurgical furnace,can packing machine,Wind blade transporter,shield tunneling machine,tube push bench,excavator |
| Brand Name | LYMC |
| Place of Origin | HangZhou ZheJiang |
| Warranty | 12 months |
| Payment term | T/T is our first choice |
|
Packing details |
1,Filling with anti-rust oil 2.Corved with Plastic paper 3.Corved with kraft paper 4.Corved with Blue tie 5.Put in wooden box |
Product Process
Application:
– Excavators – Drilling rigs – Mining Equipments – Cranes -Offshore Equipments – Vehicles – Machine Tools – Wind Turbines
About Us:
HangZhou MC Bearing Technology Co.,Ltd (LYMC),who is manufacture located in bearing zone, focus on Slewing bearing, cross roller bearing and pinion,Dia from 50mm-8000mm, Our team with technical and full experience in the bearing industry.
*Professional in researching, developing, producing & marketing high precision bearings for 16 years;
*Many series bearings are on stock; Factory directly provide, most competitive price;
*Advanced CNC equipment, guarantee product accuracy & stability;
*One stop purchasing, product include cross roller bearing, rotary table bearing, robotic bearing, slewing bearing, angular contact ball bearing, large and extra large custom made bearing, diameter from 50~9000mm;
*Excellent pre-sale & after sale service. We can go to customers’ project site if needed.
*Professional technical & exporting team ensure excellent product design, quotation, delivering, documentation & custom clearance.
Our Service:
FAQ:
1.Q: Are you trading company or manufacturer ?
A: We are professional slewing bearing manufacturer with 20 years’ experience.
2.Q: How long is your delivery time?
A: Generally it is 4-5 days if the goods are in stock. or it is 45 days if the goods are not in
stock, Also it is according to quantity.
3.Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample, it is extra.
4.Q: What is your terms of payment ?
A: Payment=1000USD, 30% T/T in advance, balance before shipment.
5.Q: Can you provide special customization according to the working conditions?
A: Sure, we can design and produce the slewing bearings for different working conditions.
6.Q: How about your guarantee?
A: We provide lifelong after-sales technical service.
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Standard or Nonstandard: | Standard |
|---|---|
| Feature: | High Speed, Cold-Resistant, Corrosion-Resistant, Heat-Resistant |
| Sealing Gland: | Sealed On Both Sides |
| Rolling-Element Number: | Single-Row |
| Roller Type: | Straight Raceway |
| Material: | 50mn/42CrMo |
| Customization: |
Available
| Customized Request |
|---|
Can you Provide Examples of Industries where Ball Bearings are Crucial Components?
Ball bearings are essential components in a wide range of industries where smooth motion, load support, and precision are vital. Here are some examples of industries where ball bearings play a crucial role:
- Automotive Industry:
Ball bearings are used in various automotive applications, including wheel hubs, transmissions, engines, steering systems, and suspension components. They provide reliable rotation and support in both passenger vehicles and commercial vehicles.
- Aerospace Industry:
In the aerospace sector, ball bearings are found in aircraft engines, landing gear systems, control surfaces, and avionics equipment. Their ability to handle high speeds and precision is vital for aviation safety.
- Industrial Machinery:
Ball bearings are integral to a wide range of industrial machinery, including pumps, compressors, conveyors, machine tools, printing presses, and textile machinery. They facilitate smooth operation and load distribution in these diverse applications.
- Medical Equipment:
In medical devices and equipment, ball bearings are used in surgical instruments, imaging equipment, dental tools, and laboratory machinery. Their precision and smooth movement are crucial for accurate diagnostics and treatments.
- Robotics and Automation:
Ball bearings are key components in robotic arms, automation systems, and manufacturing machinery. They enable precise movement, high-speed operation, and reliable performance in automated processes.
- Renewable Energy:
Wind turbines and solar tracking systems utilize ball bearings to enable efficient rotation and tracking of the wind blades and solar panels. Ball bearings withstand the dynamic loads and environmental conditions in renewable energy applications.
- Marine and Shipbuilding:
Ball bearings are used in marine applications such as ship propulsion systems, steering mechanisms, and marine pumps. They withstand the corrosive environment and provide reliable performance in maritime operations.
- Heavy Equipment and Construction:
In construction machinery like excavators, bulldozers, and cranes, ball bearings support the movement of heavy loads and enable efficient operation in demanding environments.
- Electronics and Consumer Appliances:
Consumer electronics like electric motors, computer hard drives, and household appliances rely on ball bearings for smooth motion and reliable operation.
- Oil and Gas Industry:
In oil and gas exploration and extraction equipment, ball bearings are used in drilling rigs, pumps, and processing machinery. They handle the high loads and harsh conditions of this industry.
These examples demonstrate how ball bearings are indispensable components in various industries, contributing to the efficiency, reliability, and functionality of diverse mechanical systems and equipment.
What Precautions should be taken to Prevent Contamination of Ball Bearings in Industrial Settings?
Preventing contamination of ball bearings is essential to ensure their proper function, longevity, and overall performance in industrial settings. Contaminants such as dust, dirt, debris, and particles can significantly impact bearing operation. Here are important precautions to take to prevent contamination of ball bearings:
- Effective Sealing:
Choose ball bearings with appropriate seals or shields to prevent the ingress of contaminants. Seals provide a physical barrier against dust, moisture, and particles, ensuring the bearing’s interior remains clean.
- Clean Environment:
Maintain a clean working environment around the machinery and equipment. Regularly clean the surrounding areas to prevent the accumulation of dirt and debris that could enter the bearings.
- Proper Handling:
Handle bearings with clean hands and use gloves if necessary. Avoid touching the bearing surfaces with bare hands, as natural skin oils can transfer contaminants onto the bearing.
- Clean Tools and Equipment:
Use clean tools and equipment during installation and maintenance to prevent introducing contaminants. Ensure that tools are properly cleaned before coming into contact with the bearing components.
- Contamination-Controlled Workstations:
Establish contamination-controlled workstations for bearing handling, installation, and maintenance. These areas should have proper ventilation, filtered air, and minimal exposure to external contaminants.
- Proper Lubrication:
Use the correct lubricant in appropriate quantities. Lubricants help create a barrier against contaminants and reduce friction. Regularly inspect and replenish lubrication to maintain its effectiveness.
- Regular Inspections:
Implement a routine inspection schedule to monitor the condition of the bearings. Look for signs of contamination, wear, and damage. Address any issues promptly to prevent further damage.
- Training and Education:
Train personnel on proper handling, installation, and maintenance practices to minimize the risk of contamination. Educated employees are more likely to take precautions and prevent accidental contamination.
- Environmental Controls:
In sensitive environments, such as clean rooms or medical facilities, implement strict environmental controls to minimize the presence of contaminants that could affect bearing performance.
- Regular Cleaning and Maintenance:
Perform regular cleaning and maintenance of machinery and equipment to prevent the buildup of contaminants. Keep bearings protected during maintenance to prevent debris from entering during the process.
- Selection of Suitable Bearings:
Choose bearings that are specifically designed for the application’s environmental conditions. Some bearings have advanced sealing options or specialized coatings that enhance contamination resistance.
By implementing these precautions, industries can significantly reduce the risk of contamination in ball bearings, ensuring smooth operation, extended bearing life, and enhanced equipment reliability.
How do Ball Bearings Differ from Other Types of Bearings like Roller Bearings?
Ball bearings and roller bearings are two common types of rolling-element bearings, each with distinct designs and characteristics. Here’s a comparison of ball bearings and roller bearings:
- Design:
Ball Bearings: Ball bearings use spherical balls to separate and reduce friction between the bearing’s inner and outer rings. The balls enable rolling motion and smooth contact, minimizing friction.
Roller Bearings: Roller bearings, as the name suggests, use cylindrical or tapered rollers instead of balls. These rollers have larger contact areas, distributing loads over a broader surface.
- Friction and Efficiency:
Ball Bearings: Due to the point contact between the balls and the rings, ball bearings have lower friction and are more efficient at high speeds.
Roller Bearings: Roller bearings have a larger contact area, resulting in slightly higher friction compared to ball bearings. They are more suitable for heavy-load applications where efficiency is prioritized over high speeds.
- Load Capacity:
Ball Bearings: Ball bearings excel at handling light to moderate loads in both radial and axial directions. They are commonly used in applications where smooth rotation and low friction are important.
Roller Bearings: Roller bearings have a higher load-carrying capacity than ball bearings. They can support heavier radial and axial loads and are preferred for applications with significant loads or impact forces.
- Variability:
Ball Bearings: Ball bearings come in various designs, including deep groove, angular contact, and thrust ball bearings, each suitable for different applications.
Roller Bearings: Roller bearings have diverse types, including cylindrical, spherical, tapered, and needle roller bearings, each optimized for specific load and motion requirements.
- Speed Capability:
Ball Bearings: The reduced friction in ball bearings makes them suitable for high-speed applications, such as electric motors and precision machinery.
Roller Bearings: Roller bearings can handle higher loads but are generally better suited for moderate to low speeds due to slightly higher friction.
- Applications:
Ball Bearings: Ball bearings are used in applications where smooth motion, low friction, and moderate loads are essential, such as electric fans, bicycles, and some automotive components.
Roller Bearings: Roller bearings find applications in heavy machinery, construction equipment, automotive transmissions, and conveyor systems, where heavier loads and durability are crucial.
In summary, ball bearings and roller bearings differ in their design, friction characteristics, load capacities, speed capabilities, and applications. The choice between them depends on the specific requirements of the machinery and the type of loads and forces involved.
editor by CX 2024-04-16
China best Slewing Bearings-Four Point Contact Ball Slewing Bearing supplier
Product Description
Slewing Bearings-Four Point Contact Ball Slewing Bearing
Product Description
Bearing Application Data Sheet or call SBIbearing for free design assistance in selecting the right thin section bearing for your application.
About Slewing Rings and Turntable Bearings
Slewing rings and turntable bearings can accommodate axial, radial and moment loads. They are not housed or mounted on a shaft, but are instead mounted directly to a seating surface. The inner and outer rings are supplied with mounting holes and often include internal or external gears. There are several basic types of products. Single-row slewing rings and turntable bearings feature a single row of balls, a standard bearing raceway, and 4 points of contact between the balls and raceway. Double-row products feature 2 rows of ball bearings, 2 raceways, and 8 points of contacts for each ball. Slewing rings and turntable rings with 3 independent rows of rollers are also available. Cross rollers have a single row of rollers with the axes of alternating, adjacent rollers at right angles to 1 another. Slewing rings and turntable bearings with a single row of balls and a single row of rollers are designed for small radial runout and high thrust roads. Typically, inserted raceways are made of wire and use either a ball or roller as the contact element.
Slewing rings and turntable bearings vary in terms of physical dimensions and operating specifications. Bore size, outside diameter and overall width are the most important physical dimensions to consider. Metric bores are measured in millimeters (mm) and specified according to a standard numbering system that ranges from 00 (10 mm) to 20 (100 mm). Bore sizes 00, 01, 02, and 03 are 10 mm, 12 mm, 15 mm, and 17 mm, respectively. For bore sizes 04 and up, multiplying the bore size by 5 yields the bore diameter. Slewing rings and turntable bearings that are measured in inches (in) or fractions of an inch are also available. For flanged bearings, the outside diameter excludes the size of the flange. Overall width includes the size of the locking collar, if present. In terms of operating specifications, the most important measurements to consider are static axial or thrust load, static radial load, and moment load. Typically, these specifications are measured in pounds or feet-pounds .
Product Parameters
| Type |
Single row 4 point contact ball slewing bearing Double row crossed cylindrical roller slewing bearings Double row ball slewing bearings Wind power bearings Non-standard customized slewing bearing with inner/ outer gear |
| Rollng elements | Steel ball / Cylinder Roller |
| Bearing Material | 50Mn/42CrMo/42CrMo4V /Customized |
| Cage Material | Nylon/ steel /copper |
| Structure | taper pin, Mounting holes, Inner ring, grease fitting, load plug, seals, roller, spacer balls or separators |
| Outer diameter | 50-10000mm |
| Bore size | 50-10000mm |
| Mounting hole | Through hole/Tapped hole |
| Raceway hardness | 55-62HRC |
| Inner and outer ring modulation hardness |
229-269HB/Customized |
| Gear type | No gear, Internal gear, External gear |
| Certificate | SGS, ISO9001 |
|
Application area |
Ladle turret, Stacker crane, Bucket wheel machine, Solar heliostat Tracking System, port crane, Cabling machine, tower crane, offshore platform, ferris wheel, Palletizing robot, Rotary metallurgical furnace, can packing machine, Wind blade transporter, shield tunneling machine, tube push bench, excavator |
Company Profile
Turntable bearing (Slewing ring bearing, Swing Gears, Swing Bearings, Slewing Rings, Slew Rings)
Turntable Bearings, or slewing ring bearings.
We offer bearings of high-precision, high-speed and high-quality, which are widly used in many fields such as aerospace, aviation, navigation, metallurgy, petroleum, chemicals, power generation, pulp and paper, textiles, shipyards, mining machinery, engineering machinery, machinery, railways, automobiles, beer, cigarettes, household appliances, electrical and mechanical manufacturing, and so on. Typical applications include swing bearings (slewing rings) for cranes, excavators, aerial work platforms, gun turrets, radar pedestals, forestry equipment, agricultural vehicles, surveillance equipment, scanner equipment, excavators, cranes, tunneling machines, or material handling equipment.ZTIC offers light- to medium-duty turntable bearings or heavy-duty turntable bearings for even greater load-handling capabilities.
Slewing rings or Turntable bearings are our specialty. ZTIC slewing ring bearings ( turntable bearing) range cover the four-point contact ball slewing ring bearing / Four contact ball slewing bearing( turntable bearing), double direction angular contact thrust ball slewing ring bearing / Double-row ball slewing bearing( turntable bearing), cross roller slewing ring bearing / Crossed roller bearing( turntable bearing), triple-row cylindrical roller slewing ring bearing / Three row roller slewing bearing( turntable bearing).We adopt China state standard (JB/T 2300-1999) to manufacture slewing ring bearing( turntable bearing), also we can adopt other standard (such as API 2C) according to customer requirement. Our best-known product, available in several versions and sizes, for the most varied load conditions. ZTIC bearing also offers light- to medium-duty and heavy-duty turntable bearings, or custom bearings. Submit your online
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Standard or Nonstandard: | Standard |
|---|---|
| Feature: | Heat-Resistant, Wear-Resistant |
| Application: | Conveyer Equipment, Packaging Machinery, Marine, Mining Equipment, Agricultural Machinery |
| Surface Treatment: | Polishing |
| Material: | Stainless Steel |
| Dia: | 300mm-15000mm |
| Customization: |
Available
| Customized Request |
|---|
What are the Challenges Associated with Noise Reduction in Ball Bearings?
Noise reduction in ball bearings is a crucial consideration, especially in applications where noise levels must be minimized for operational efficiency and user comfort. While ball bearings are designed to operate smoothly, there are several challenges associated with reducing noise in their operation:
- Vibration:
Vibration generated by the movement of rolling elements and raceways can lead to noise. Even minor irregularities in bearing components or the mounting system can cause vibration that translates into audible noise.
- Bearing Type and Design:
The type and design of the ball bearing can impact noise generation. For example, deep groove ball bearings are known for their quiet operation, while angular contact bearings can generate more noise due to their higher contact angles.
- Lubrication:
Improper or inadequate lubrication can result in increased friction and wear, leading to noise. Choosing the right lubricant and maintaining proper lubrication levels are essential for reducing noise in ball bearings.
- Bearing Clearance and Preload:
Incorrect clearance or preload settings can lead to noise issues. Excessive clearance or inadequate preload can cause the rolling elements to impact the raceways, resulting in noise during rotation.
- Material and Manufacturing Quality:
The quality of materials and manufacturing processes can affect noise levels. Inconsistent or low-quality materials, improper heat treatment, or manufacturing defects can lead to noise generation during operation.
- Surface Finish:
The surface finish of the rolling elements and raceways can impact noise. Rough surfaces can generate more noise due to increased friction and potential irregularities.
- Sealing and Shielding:
Seals and shields that protect bearings can influence noise levels. While they are necessary for contamination prevention, they can also cause additional friction and generate noise.
- Operating Conditions:
External factors such as temperature, speed, and load can influence noise levels. High speeds or heavy loads can amplify noise due to increased stress on the bearing components.
- Wear and Deterioration:
As ball bearings wear over time, noise levels can increase. Worn components or inadequate lubrication can lead to more significant noise issues as the bearing operates.
To address these challenges and reduce noise in ball bearings, manufacturers and engineers employ various techniques, such as optimizing design, selecting suitable bearing types, using proper lubrication, maintaining accurate preload settings, and ensuring high-quality materials and manufacturing processes. Noise reduction efforts are essential to improve overall product quality, meet noise regulations, and enhance user experience in various applications.
How do Ceramic Ball Bearings Compare to Traditional Steel Ball Bearings in Terms of Performance?
Ceramic ball bearings and traditional steel ball bearings have distinct characteristics that can impact their performance in various applications. Here’s a comparison of how these two types of bearings differ in terms of performance:
- Material Composition:
Ceramic Ball Bearings:
Ceramic ball bearings use ceramic rolling elements, typically made from materials like silicon nitride (Si3N4) or zirconium dioxide (ZrO2). These ceramics are known for their high hardness, low density, and resistance to corrosion and wear.
Traditional Steel Ball Bearings:
Traditional steel ball bearings use steel rolling elements. The type of steel used can vary, but common materials include chrome steel (52100) and stainless steel (440C). Steel bearings are known for their durability and strength.
- Friction and Heat:
Ceramic Ball Bearings:
Ceramic bearings have lower friction coefficients compared to steel bearings. This results in reduced heat generation during operation, contributing to higher efficiency and potential energy savings.
Traditional Steel Ball Bearings:
Steel bearings can generate more heat due to higher friction coefficients. This can lead to increased energy consumption in applications where efficiency is crucial.
- Weight:
Ceramic Ball Bearings:
Ceramic bearings are lighter than steel bearings due to the lower density of ceramics. This weight reduction can be advantageous in applications where minimizing weight is important.
Traditional Steel Ball Bearings:
Steel bearings are heavier than ceramic bearings due to the higher density of steel. This weight may not be as critical in all applications but could impact overall equipment weight and portability.
- Corrosion Resistance:
Ceramic Ball Bearings:
Ceramic bearings have excellent corrosion resistance, making them suitable for applications in corrosive environments, such as marine or chemical industries.
Traditional Steel Ball Bearings:
Steel bearings are susceptible to corrosion, especially in harsh environments. Stainless steel variants offer improved corrosion resistance but may still corrode over time.
- Speed and Precision:
Ceramic Ball Bearings:
Ceramic bearings can operate at higher speeds due to their lower friction and ability to withstand higher temperatures. They are also known for their high precision and low levels of thermal expansion.
Traditional Steel Ball Bearings:
Steel bearings can operate at high speeds as well, but their heat generation may limit performance in certain applications. Precision steel bearings are also available but may have slightly different characteristics compared to ceramics.
- Cost:
Ceramic Ball Bearings:
Ceramic bearings are generally more expensive to manufacture than steel bearings due to the cost of ceramic materials and the challenges in producing precision ceramic components.
Traditional Steel Ball Bearings:
Steel bearings are often more cost-effective to manufacture, making them a more economical choice for many applications.
In conclusion, ceramic ball bearings and traditional steel ball bearings offer different performance characteristics. Ceramic bearings excel in terms of low friction, heat generation, corrosion resistance, and weight reduction. Steel bearings are durable, cost-effective, and widely used in various applications. The choice between the two depends on the specific requirements of the application, such as speed, precision, corrosion resistance, and budget considerations.
How do Ball Bearings Differ from Other Types of Bearings like Roller Bearings?
Ball bearings and roller bearings are two common types of rolling-element bearings, each with distinct designs and characteristics. Here’s a comparison of ball bearings and roller bearings:
- Design:
Ball Bearings: Ball bearings use spherical balls to separate and reduce friction between the bearing’s inner and outer rings. The balls enable rolling motion and smooth contact, minimizing friction.
Roller Bearings: Roller bearings, as the name suggests, use cylindrical or tapered rollers instead of balls. These rollers have larger contact areas, distributing loads over a broader surface.
- Friction and Efficiency:
Ball Bearings: Due to the point contact between the balls and the rings, ball bearings have lower friction and are more efficient at high speeds.
Roller Bearings: Roller bearings have a larger contact area, resulting in slightly higher friction compared to ball bearings. They are more suitable for heavy-load applications where efficiency is prioritized over high speeds.
- Load Capacity:
Ball Bearings: Ball bearings excel at handling light to moderate loads in both radial and axial directions. They are commonly used in applications where smooth rotation and low friction are important.
Roller Bearings: Roller bearings have a higher load-carrying capacity than ball bearings. They can support heavier radial and axial loads and are preferred for applications with significant loads or impact forces.
- Variability:
Ball Bearings: Ball bearings come in various designs, including deep groove, angular contact, and thrust ball bearings, each suitable for different applications.
Roller Bearings: Roller bearings have diverse types, including cylindrical, spherical, tapered, and needle roller bearings, each optimized for specific load and motion requirements.
- Speed Capability:
Ball Bearings: The reduced friction in ball bearings makes them suitable for high-speed applications, such as electric motors and precision machinery.
Roller Bearings: Roller bearings can handle higher loads but are generally better suited for moderate to low speeds due to slightly higher friction.
- Applications:
Ball Bearings: Ball bearings are used in applications where smooth motion, low friction, and moderate loads are essential, such as electric fans, bicycles, and some automotive components.
Roller Bearings: Roller bearings find applications in heavy machinery, construction equipment, automotive transmissions, and conveyor systems, where heavier loads and durability are crucial.
In summary, ball bearings and roller bearings differ in their design, friction characteristics, load capacities, speed capabilities, and applications. The choice between them depends on the specific requirements of the machinery and the type of loads and forces involved.
editor by CX 2024-04-13
China Hot selling Vu 20 0260 Ball Slewing Bearing Made in China bearing air
Product Description
VU 20 0260 Ball Slewing Bearing Made In China
Four-point contact ball slewing turntable bearings
consist of 2 ring seats. Compact structure, light weight, steel ball and arc track contact at 4 points, can bear axial force, radial force and overturning moment at the same time, has strong dynamic load.
Single row cross roller slewing bearing
Composed of 2 or 3 rings. compact structure, light weight, high manufacturing accuracy, small assembly gap and high requirement for installation accuracy. Rollers are 1:1 cross-arranged.
Can be bear axial force, overturning moment and large radial force at the same time,and widely used in lifting transportation, construction machinery and precesion products.
Double row ball slewing bearings
This kind of bearings can support high static loads with simple structures. They are mainly used in situations with variation load position and direction and continuously rotating. Main applications of this kind of bearings are deck hoisting, mining and material handling etc.
Three row roller slewing bearing
Three row roller bearing CZPT to bear all kinds of loads at the same time, it is the largest 1 of the 4 structural products with large axle and radial dimensions and firm structure. Especially suitable for heavy machinery requiring larger diameter, such as bucket wheel stacker and reclaimer, wheel crane, marine crane, port crane, ladle turret,large tonnage truck crane,heavy machinery and so on.
| Type | • Single row 4 point contact ball slewing bearing • Single row crossed cylindrical roller slewing bearings • Double row ball slewing bearings •Double row Roller/ball combination slewing bearing •Three-Row Roller Slew Ring Bearing |
| Rolling elements | Steel ball / Cylinder Roller |
| Rolling elements Material | GCr5/GCr15SiMn/Customized |
| Bearing Material | 50Mn/42CrMo/42CrMo4V /Customized |
| Cage Material | Nylon/ steel /copper |
| Structure | taper pin , Mounting holes,Inner ring ,grease fitting,load plug, seals , roller ,spacer balls or separators |
| Outer diameter | 50-10000mm |
| Bore size | 50-10000mm |
| Mounting hole | Through hole/Tapped hole |
| Raceway hardness | 55-62HRC |
| Inner and outer ring modulation hardness |
229-269HB/Customized |
| Gear type | No gear ,Internal gear , External gear. |
| Embellish grease | EP2 lithium lubricating grease |
| Certificate | ABS.BV,DNV,ISO9001,GL,3.1,3.2 |
| Application area | Ladle turret,Stacker crane,Bucket wheel machine,Solar heliostat Tracking System,port crane, Cabling machine,tower crane , offshore platform,ferris wheel, Palletizing robot,Rotary metallurgical furnace,can packing machine,Wind blade transporter,shield tunneling machine,tube push bench,excavator |
| Brand Name | LYMC |
| Place of Origin | HangZhou ZheJiang |
| Warranty | 12 months |
| Payment term | T/T is our first choice |
|
Packing details |
1,Filling with anti-rust oil 2.Corved with Plastic paper 3.Corved with kraft paper 4.Corved with Blue tie 5.Put in wooden box |
Product Process
Application:
– Excavators – Drilling rigs – Mining Equipments – Cranes -Offshore Equipments – Vehicles – Machine Tools – Wind Turbines
About Us:
HangZhou MC Bearing Technology Co.,Ltd (LYMC),who is manufacture located in bearing zone, focus on Slewing bearing, cross roller bearing and pinion,Dia from 50mm-8000mm, Our team with technical and full experience in the bearing industry.
*Professional in researching, developing, producing & marketing high precision bearings for 16 years;
*Many series bearings are on stock; Factory directly provide, most competitive price;
*Advanced CNC equipment, guarantee product accuracy & stability;
*One stop purchasing, product include cross roller bearing, rotary table bearing, robotic bearing, slewing bearing, angular contact ball bearing, large and extra large custom made bearing, diameter from 50~9000mm;
*Excellent pre-sale & after sale service. We can go to customers’ project site if needed.
*Professional technical & exporting team ensure excellent product design, quotation, delivering, documentation & custom clearance.
Our Service:
FAQ:
1.Q: Are you trading company or manufacturer ?
A: We are professional slewing bearing manufacturer with 20 years’ experience.
2.Q: How long is your delivery time?
A: Generally it is 4-5 days if the goods are in stock. or it is 45 days if the goods are not in
stock, Also it is according to quantity.
3.Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample, it is extra.
4.Q: What is your terms of payment ?
A: Payment=1000USD, 30% T/T in advance, balance before shipment.
5.Q: Can you provide special customization according to the working conditions?
A: Sure, we can design and produce the slewing bearings for different working conditions.
6.Q: How about your guarantee?
A: We provide lifelong after-sales technical service.
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Standard or Nonstandard: | Standard |
|---|---|
| Feature: | High Speed, Cold-Resistant, Corrosion-Resistant, Heat-Resistant |
| Sealing Gland: | Sealed On Both Sides |
| Rolling-Element Number: | Single-Row |
| Material: | 50mn/42CrMo |
| Type: | No Gear |
| Samples: |
US$ 275/Set
1 Set(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
Are there Specific Maintenance Practices to Ensure the Longevity of Ball Bearings?
Maintaining ball bearings is essential to ensure their longevity, reliable performance, and prevent premature failure. Proper maintenance practices can extend the lifespan of ball bearings and the equipment they are used in. Here are specific maintenance practices to consider:
- Regular Lubrication:
Implement a regular lubrication schedule using the appropriate lubricant for the application. Lubrication reduces friction, prevents wear, and helps dissipate heat. Follow manufacturer guidelines for lubricant type, quantity, and frequency.
- Clean Environment:
Keep the operating environment clean and free from contaminants. Dust, dirt, and debris can infiltrate bearings and cause damage. Use seals or shields to protect bearings from contaminants, especially in harsh environments.
- Proper Installation:
Ensure correct installation of bearings using proper tools and techniques. Improper installation can lead to misalignment, uneven load distribution, and premature wear. Follow manufacturer recommendations for installation procedures.
- Regular Inspections:
Perform routine visual inspections to check for signs of wear, damage, or contamination. Regular inspections can help identify issues early and prevent further damage. Pay attention to noise, vibration, and temperature changes.
- Temperature Monitoring:
Monitor bearing temperatures during operation using infrared thermometers or sensors. Abnormal temperature increases can indicate inadequate lubrication, misalignment, or other problems.
- Correct Handling:
Handle bearings with care to prevent damage during storage, transportation, and installation. Avoid dropping or subjecting them to impacts that can affect their internal components.
- Bearing Removal and Replacement:
Follow proper procedures when removing and replacing bearings. Use appropriate tools and techniques to avoid damage to the bearing or the surrounding components.
- Alignment Maintenance:
Maintain proper shaft and housing alignment to prevent excessive loads and wear on the bearing. Misalignment can lead to increased stress and premature failure.
- Training and Education:
Provide training to operators and maintenance personnel on proper bearing maintenance and handling practices. Educated personnel are more likely to identify issues and perform maintenance correctly.
- Documented Records:
Keep records of maintenance activities, inspections, lubrication schedules, and any issues encountered. This documentation helps track the bearing’s performance over time and informs future maintenance decisions.
By implementing these maintenance practices, you can ensure the longevity of ball bearings, minimize downtime, reduce operational costs, and maintain the reliability of the equipment they are a part of.
What Precautions should be taken to Prevent Contamination of Ball Bearings in Industrial Settings?
Preventing contamination of ball bearings is essential to ensure their proper function, longevity, and overall performance in industrial settings. Contaminants such as dust, dirt, debris, and particles can significantly impact bearing operation. Here are important precautions to take to prevent contamination of ball bearings:
- Effective Sealing:
Choose ball bearings with appropriate seals or shields to prevent the ingress of contaminants. Seals provide a physical barrier against dust, moisture, and particles, ensuring the bearing’s interior remains clean.
- Clean Environment:
Maintain a clean working environment around the machinery and equipment. Regularly clean the surrounding areas to prevent the accumulation of dirt and debris that could enter the bearings.
- Proper Handling:
Handle bearings with clean hands and use gloves if necessary. Avoid touching the bearing surfaces with bare hands, as natural skin oils can transfer contaminants onto the bearing.
- Clean Tools and Equipment:
Use clean tools and equipment during installation and maintenance to prevent introducing contaminants. Ensure that tools are properly cleaned before coming into contact with the bearing components.
- Contamination-Controlled Workstations:
Establish contamination-controlled workstations for bearing handling, installation, and maintenance. These areas should have proper ventilation, filtered air, and minimal exposure to external contaminants.
- Proper Lubrication:
Use the correct lubricant in appropriate quantities. Lubricants help create a barrier against contaminants and reduce friction. Regularly inspect and replenish lubrication to maintain its effectiveness.
- Regular Inspections:
Implement a routine inspection schedule to monitor the condition of the bearings. Look for signs of contamination, wear, and damage. Address any issues promptly to prevent further damage.
- Training and Education:
Train personnel on proper handling, installation, and maintenance practices to minimize the risk of contamination. Educated employees are more likely to take precautions and prevent accidental contamination.
- Environmental Controls:
In sensitive environments, such as clean rooms or medical facilities, implement strict environmental controls to minimize the presence of contaminants that could affect bearing performance.
- Regular Cleaning and Maintenance:
Perform regular cleaning and maintenance of machinery and equipment to prevent the buildup of contaminants. Keep bearings protected during maintenance to prevent debris from entering during the process.
- Selection of Suitable Bearings:
Choose bearings that are specifically designed for the application’s environmental conditions. Some bearings have advanced sealing options or specialized coatings that enhance contamination resistance.
By implementing these precautions, industries can significantly reduce the risk of contamination in ball bearings, ensuring smooth operation, extended bearing life, and enhanced equipment reliability.
Can you Explain the Various Types of Ball Bearings and their Specific Use Cases?
Ball bearings come in various types, each designed to meet specific application requirements. Here’s an overview of the different types of ball bearings and their specific use cases:
- Deep Groove Ball Bearings:
Deep groove ball bearings are the most common and versatile type. They have a deep raceway that allows them to handle both radial and axial loads. They are used in a wide range of applications, including electric motors, household appliances, automotive components, and industrial machinery.
- Angular Contact Ball Bearings:
Angular contact ball bearings have a contact angle that enables them to handle both radial and axial loads at specific angles. They are suitable for applications where combined loads or thrust loads need to be supported, such as in machine tool spindles, pumps, and agricultural equipment.
- Self-Aligning Ball Bearings:
Self-aligning ball bearings have two rows of balls and are designed to accommodate misalignment between the shaft and the housing. They are used in applications where shaft deflection or misalignment is common, such as conveyor systems, textile machinery, and paper mills.
- Thrust Ball Bearings:
Thrust ball bearings are designed to support axial loads in one direction. They are commonly used in applications where axial loads need to be supported, such as in automotive transmissions, steering systems, and crane hooks.
- Single-Row vs. Double-Row Bearings:
Single-row ball bearings have a single set of balls and are suitable for moderate load and speed applications. Double-row ball bearings have two sets of balls and offer higher load-carrying capacity. Double-row designs are used in applications such as machine tool spindles and printing presses.
- Miniature and Instrument Ball Bearings:
Miniature ball bearings are smaller in size and are used in applications with limited space and lower load requirements. They are commonly used in small electric motors, medical devices, and precision instruments.
- Max-Type and Conrad Bearings:
Max-type ball bearings have a larger number of balls to increase load-carrying capacity. Conrad bearings have fewer balls and are used in applications with moderate loads and speeds.
- High-Precision Ball Bearings:
High-precision ball bearings are designed for applications where accuracy and precision are critical, such as machine tool spindles, aerospace components, and optical instruments.
- High-Speed Ball Bearings:
High-speed ball bearings are engineered to minimize friction and accommodate rapid rotation. They are used in applications such as dental handpieces, turbochargers, and centrifuges.
In summary, the various types of ball bearings are tailored to different application requirements, including load type, direction, speed, and environmental conditions. Selecting the appropriate type of ball bearing ensures optimal performance and longevity in specific applications.
editor by CX 2024-04-12