Product Description
Product Description
6310 / 6310-2RS / 6310-ZZ deep groove ball bearing
6206 deep groove ball bearing is the most common type of rolling bearing. The basic deep groove ball bearing consists of an outer ring, an inner circle, a set of steel balls and a set of maintenance frames.
6206 deep groove ball bearing is sealed and open 2 kinds of structure, open without sealing structure refers to the bearing, seal type deep groove ball into dust seal and oil seal. The dust – proof sealing material is a sheet metal stamping, which simply prevents the dust from entering the bearing roller. The oil-proof type is the contact oil seal, which can effectively prevent the grease spillover inside the bearing.
Deep groove ball bearing
Single row deep groove ball bearings are particularly versatile, have low friction and are optimized for low noise and low vibration, which enables high rotational speeds. They accommodate radial and axial loads in both directions, are easy to mount, and require less maintenance than many other bearing types.
- Simple, versatile and robust design
- Low friction
- High-speed capability
- Accommodate radial and axial loads in both directions
- Require little maintenance
More series of deep groove ball bearing
Tip: Here are only part of the model numbers. Please contact us for full catalog.
| Deep Groove Ball Bearing Catalog | ||||||||
| Number | Specification | Rated Load(KN) | Speed(r/min) | Weight | ||||
| D(mm) | D(mm) | W(mm) | Cr(N) | Cor(N) | Grease | Oil | kg | |
| 6000 | 10 | 26 | 8 | 4.55 | 1.96 | 20000 | 28000 | 0.019 |
| 6001 | 12 | 28 | 8 | 5.1 | 2.39 | 19000 | 26000 | 0.571 |
| 6002 | 15 | 32 | 9 | 5.6 | 2.84 | 18000 | 24000 | 0.03 |
| 6003 | 17 | 35 | 10 | 6.8 | 3.35 | 17000 | 22000 | 0.039 |
| 6004 | 20 | 42 | 12 | 9.4 | 5.05 | 15000 | 19000 | 0.069 |
| 6005 | 25 | 47 | 12 | 10.1 | 5.85 | 13000 | 17000 | 0.08 |
| 6006 | 30 | 55 | 13 | 13.2 | 8.3 | 12000 | 15000 | 0.116 |
| 6007 | 35 | 62 | 14 | 16 | 10.3 | 10000 | 13000 | 0.155 |
| 6008 | 40 | 68 | 15 | 16.8 | 11.5 | 8000 | 11000 | 0.185 |
| 6009 | 45 | 75 | 16 | 21 | 15.1 | 7200 | 9000 | 0.231 |
| 6571 | 50 | 80 | 16 | 21.8 | 16.6 | 6400 | 7800 | 0.25 |
| 6011 | 55 | 90 | 18 | 28.3 | 21.2 | 5700 | 7000 | 0.362 |
| 6012 | 60 | 95 | 18 | 29.5 | 23.2 | 5300 | 6300 | 0.385 |
| 6013 | 65 | 100 | 18 | 30.5 | 25.2 | 5040 | 6000 | 0.421 |
| 6014 | 70 | 110 | 20 | 38 | 31 | 4800 | 5600 | 0.604 |
| 6015 | 75 | 115 | 20 | 39.5 | 33.5 | 4480 | 5360 | 0.604 |
| 6016 | 80 | 125 | 22 | 47.5 | 40 | 4240 | 5040 | 0.854 |
| 6017 | 85 | 130 | 22 | 49.5 | 43 | 4000 | 4800 | 0.89 |
| 6018 | 90 | 140 | 24 | 58 | 49.5 | 3840 | 4480 | 1.02 |
| 6019 | 95 | 145 | 24 | 60.5 | 54 | 3600 | 4240 | 1.08 |
| 6571 | 100 | 150 | 24 | 60 | 54 | 3440 | 4000 | 1.15 |
| 6571 | 105 | 160 | 26 | 72.5 | 65.5 | 3200 | 3840 | 1.59 |
| 6571 | 110 | 170 | 28 | 82 | 73 | 3040 | 3600 | 1.96 |
| 6571 | 120 | 180 | 28 | 85 | 79.5 | 2720 | 3200 | 2.07 |
| 6026 | 130 | 200 | 33 | 106 | 101 | 2560 | 3040 | 3.16 |
| 6571 | 140 | 210 | 33 | 110 | 109 | 2400 | 2880 | 3.35 |
| 6030 | 150 | 225 | 35 | 126 | 126 | 2080 | 2560 | 4.08 |
| 6032 | 160 | 240 | 38 | 143 | 144 | 1920 | 2400 | 5.05 |
| 6200 | 10 | 30 | 9 | 4.056 | 1.888 | 19200 | 24000 | 0.032 |
| 6201 | 12 | 32 | 10 | 5.512 | 2.48 | 17600 | 22400 | 0.037 |
| 6202 | 15 | 35 | 11 | 6.24 | 3 | 15200 | 19200 | 0.045 |
| 6203 | 17 | 40 | 12 | 7.648 | 3.8 | 13600 | 16000 | 0.065 |
| 6204 | 20 | 47 | 14 | 10.16 | 5.24 | 12000 | 14400 | 0.11 |
| 6205 | 25 | 52 | 15 | 11.2 | 6.24 | 9600 | 12000 | 0.13 |
| 6206 | 30 | 62 | 16 | 15.6 | 8.96 | 8000 | 10400 | 0.2 |
| 6207 | 35 | 72 | 17 | 20.4 | 12.24 | 7200 | 8800 | 0.29 |
| 6208 | 40 | 8 | 18 | 24.56 | 15.2 | 6800 | 8000 | 0.37 |
| 6209 | 45 | 85 | 19 | 26.56 | 17.28 | 6000 | 7200 | 0.41 |
| 6210 | 50 | 90 | 20 | 28.08 | 18.56 | 5600 | 6800 | 0.46 |
| 6211 | 55 | 100 | 21 | 34.88 | 23.2 | 5040 | 6000 | 0.61 |
| 6212 | 60 | 110 | 22 | 38 | 26 | 4800 | 5600 | 0.78 |
| 6213 | 65 | 120 | 23 | 44.72 | 32.4 | 4240 | 5040 | 0.99 |
| 6214 | 70 | 125 | 24 | 48.4 | 36 | 4000 | 4800 | 1.05 |
| 6215 | 75 | 130 | 25 | 53.04 | 39.2 | 4480 | 5360 | 1.2 |
| 6216 | 80 | 140 | 26 | 56.16 | 44 | 3600 | 4240 | 1.4 |
| 6217 | 85 | 150 | 28 | 66.56 | 51.2 | 3440 | 4000 | 1.8 |
| 6218 | 90 | 160 | 30 | 76.48 | 58.8 | 3040 | 3600 | 2.15 |
| 6219 | 95 | 170 | 32 | 86.4 | 65.2 | 2880 | 3440 | 2.6 |
| 6220 | 100 | 180 | 34 | 99.2 | 74.4 | 2720 | 3200 | 3.15 |
| 6221 | 105 | 190 | 36 | 106.4 | 83.2 | 2560 | 3040 | 3.7 |
| 6222 | 110 | 200 | 38 | 114.4 | 94.4 | 2400 | 2880 | 4.35 |
| 6224 | 120 | 215 | 40 | 116.8 | 94.4 | 2240 | 2720 | 5.15 |
| 6226 | 130 | 230 | 40 | 124.8 | 105.6 | 2080 | 2560 | 5.8 |
| 6228 | 140 | 250 | 42 | 132 | 120 | 1920 | 2400 | 7.45 |
| 6230 | 150 | 270 | 45 | 139.2 | 132.8 | 1600 | 2080 | 9.4 |
| 6232 | 160 | 290 | 48 | 148.8 | 148.8 | 1520 | 1920 | 14.5 |
| 6234 | 170 | 310 | 52 | 169.6 | 179.2 | 1520 | 1920 | 17.5 |
| 6236 | 180 | 320 | 52 | 183.2 | 192 | 1440 | 1760 | 18.5 |
| 6238 | 190 | 340 | 55 | 204 | 224 | 1360 | 1600 | 23 |
| 6240 | 200 | 360 | 58 | 216 | 248 | 1360 | 1600 | 28 |
| 6244 | 220 | 400 | 65 | 236.8 | 292 | 1200 | 1440 | 37 |
| 6248 | 240 | 440 | 72 | 286.4 | 380 | 1040 | 1280 | 51 |
| 6252 | 260 | 480 | 80 | 312 | 424 | 880 | 1120 | 65.5 |
| 6256 | 280 | 500 | 80 | 338.4 | 480 | 880 | 1120 | 71 |
| 6300 | 10 | 35 | 11 | 6.448 | 2.72 | 16000 | 20800 | 0.053 |
| 6301 | 12 | 37 | 12 | 7.8 | 3.32 | 15200 | 19200 | 0.06 |
| 6302 | 15 | 42 | 13 | 9.12 | 4.32 | 13600 | 16000 | 0.082 |
| 6303 | 17 | 47 | 14 | 10.8 | 5.24 | 12800 | 15200 | 0.12 |
| 6304 | 20 | 52 | 15 | 12.72 | 6.24 | 10400 | 12800 | 0.14 |
| 6305 | 25 | 62 | 17 | 18 | 9.28 | 8800 | 11200 | 0.23 |
| 6306 | 30 | 72 | 19 | 22.48 | 12.8 | 7200 | 8800 | 0.35 |
| 6307 | 35 | 80 | 21 | 26.56 | 15.2 | 6800 | 8000 | 0.46 |
| 6308 | 40 | 90 | 23 | 32.8 | 19.2 | 6000 | 7200 | 0.63 |
| 6309 | 45 | 100 | 25 | 42.16 | 25.2 | 53600 | 6400 | 0.83 |
| 6310 | 50 | 110 | 27 | 49.44 | 30.4 | 5040 | 6000 | 1.05 |
| 6311 | 55 | 120 | 29 | 57.2 | 36 | 4480 | 5360 | 1.35 |
| 6312 | 60 | 130 | 31 | 65.52 | 41.6 | 4000 | 4800 | 1.7 |
| 6313 | 65 | 140 | 33 | 73.84 | 48 | 3840 | 4480 | 2.1 |
| 6314 | 70 | 150 | 35 | 83.2 | 54.4 | 3600 | 4240 | 2.5 |
| 6315 | 75 | 160 | 37 | 91.2 | 61.2 | 3440 | 4000 | 3 |
| 6316 | 80 | 170 | 39 | 99.2 | 69.2 | 3040 | 3600 | 3.6 |
| 6317 | 85 | 180 | 41 | 106.4 | 77.2 | 2880 | 3440 | 4.25 |
| 6318 | 90 | 190 | 43 | 114.4 | 86.4 | 2720 | 3200 | 4.9 |
| 6319 | 95 | 200 | 45 | 122.4 | 94.4 | 2560 | 3040 | 5.65 |
| 6320 | 100 | 215 | 47 | 139.2 | 112 | 2400 | 2880 | 7 |
| 6321 | 105 | 225 | 49 | 145.6 | 122.4 | 2240 | 2720 | 8.25 |
| 6322 | 110 | 240 | 50 | 162.4 | 144 | 2080 | 2560 | 9.55 |
| 6324 | 120 | 260 | 55 | 166.4 | 148.8 | 1920 | 2400 | 14.5 |
| 6326 | 130 | 280 | 58 | 183.2 | 172.8 | 1760 | 2240 | 18 |
| 6328 | 140 | 300 | 62 | 200.8 | 196 | 1600 | 2080 | 22 |
| 6330 | 150 | 320 | 65 | 220.8 | 228 | 1520 | 1920 | 26 |
| 6332 | 160 | 340 | 68 | 220.8 | 228 | 1440 | 1760 | 29 |
| 6334 | 170 | 360 | 72 | 249.6 | 272 | 1360 | 1600 | 34.5 |
| 6336 | 180 | 380 | 75 | 280.8 | 324 | 1280 | 1600 | 42.5 |
| 6338 | 190 | 400 | 78 | 296.8 | 344 | 1280 | 1520 | 49 |
| 6340 | 200 | 420 | 80 | 301.6 | 372 | 1200 | 1440 | 55.5 |
| 6344 | 220 | 460 | 88 | 328 | 416 | 1040 | 1280 | 72.5 |
Packaging & Shipping
Please contact us for more pictures of different packing.
|
Universal Packing |
Without any logo on bearings or packing. |
|
JDZ Packing |
With our brand JDZ on bearings and packing. |
|
Customized Packing |
Depends on buyer’s requirements. |
|
Original Brand Packing |
Bearing and packing are both original. Please contact us for pictures. |
QUALITY ASSURANCE
100% Quality inspection to ensure the bearings are with good quality before shipping.
Company Profile
ZheJiang CZPT Precision Bearing Co.,Ltd. was founded by ZheJiang Defa Bearing Co.,Ltd, factory is located in ZheJiang province, China.
We are a bearing manufacturer integrating the research, development and sales of bearings, with a floor area of 18,000 square meters and a plant area of 8,800 square meters. Equipped with modern production equipment and advanced detection instruments.
We can provide all types bearings and OEM service according to customers’ requirements.
Our products are widely used in the automobile, agricultural, textile production, mining, printing and packing industries, in addition to various applications at airports, in air-conditioning systems, conveying devices, ships ad so on. Our products are being exported to more than 50 countries and regions overseas including Singapore, Thailand, Iran, Turkey, Poland, Italy, England, France, Russia, Germany, the United States, Australia, Argentina, Brazil as well as other countries and regions all over the world.
We are a trusted and reliable bearing supplier, choose us to be your good partner!
Quality Inspection
FAQ
1. Q: Are you trading company or manufacturer ?
A: We have our own factory , our type is factory + trade.
2. Q: Could you accept OEM and customize?
A: Yes, we can customize products according to your sample or drawing.
3. Q: How long is your delivery time?
A: If stock, within 7 days to ship or based on your order quantity.
4. Q: Could you supply sample for free?
A: Yes, we can offer the sample for free,do you mind to buy a “ticket” for her?
More details, please contact with us. Thanks for your time!
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| Bearing Type: | Deep Groove Ball Bearing |
|---|---|
| Precision Rating: | P0 P6 P5 P4 P2 or ABEC1 ABEC3 ABEC5 ABEC7 ABEC9 |
| Bearing Clearance: | C0/C3/C4 |
| Vibration: | Z1V1, Z2V2, Z3V3; Z4V4 |
| Seals Type: | Zz- 2RS Open |
| Hardness: | 58-62 HRC |
| Samples: |
US$ 0/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 are the Differences between Deep Groove Ball Bearings and Angular Contact Ball Bearings?
Deep groove ball bearings and angular contact ball bearings are two common types of ball bearings, each designed for specific applications and load conditions. Here are the key differences between these two types of bearings:
- Design and Geometry:
Deep Groove Ball Bearings:
Deep groove ball bearings have a simple design with a single row of balls that run along deep raceways in both the inner and outer rings. The rings are usually symmetrical and non-separable, resulting in a balanced load distribution.
Angular Contact Ball Bearings:
Angular contact ball bearings have a more complex design with two rows of balls, oriented at an angle to the bearing’s axis. This arrangement allows for the transmission of both radial and axial loads, making them suitable for combined loads and applications requiring high precision.
- Load Carrying Capacity:
Deep Groove Ball Bearings:
Deep groove ball bearings are primarily designed to carry radial loads. They can handle axial loads in both directions, but their axial load-carrying capacity is generally lower compared to angular contact ball bearings.
Angular Contact Ball Bearings:
Angular contact ball bearings are specifically designed to handle both radial and axial loads. The contact angle between the rows of balls determines the bearings’ axial load-carrying capacity. They can handle higher axial loads and are commonly used in applications with thrust loads.
- Contact Angle:
Deep Groove Ball Bearings:
Deep groove ball bearings have no defined contact angle, as the balls move in a deep groove along the raceways. They are primarily designed for radial loads.
Angular Contact Ball Bearings:
Angular contact ball bearings have a specified contact angle between the rows of balls. This contact angle allows them to carry both radial and axial loads and is crucial for their ability to handle combined loads.
- Applications:
Deep Groove Ball Bearings:
Deep groove ball bearings are commonly used in applications that primarily require radial loads, such as electric motors, pumps, and conveyor systems. They are also suitable for high-speed operation.
Angular Contact Ball Bearings:
Angular contact ball bearings are used in applications where both radial and axial loads are present, such as in machine tools, automotive wheel hubs, and aerospace components. They are especially useful for applications that require precise axial positioning and handling of thrust loads.
- Limitations:
Deep Groove Ball Bearings:
Deep groove ball bearings are not as suitable for handling significant axial loads and may experience skidding under certain conditions due to their deep raceways.
Angular Contact Ball Bearings:
Angular contact ball bearings can experience increased heat generation and wear at higher speeds due to the contact angle of the balls.
In summary, the design, load-carrying capacity, contact angle, and applications differ between deep groove ball bearings and angular contact ball bearings. Choosing the appropriate type depends on the specific load conditions and requirements of the application.

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 2024-04-08
China best CZPT High Quality Steel Angular Contact Ball Bearings for Machine Tool Spindles 70ad Series carrier bearing
Product Description
KGG: Precision Angled Contact Ball Bearing~70AD Series
Advantages and features of CZPT bearings
∞ CZPT Ball Bearings consist of an outer ring, an inner ring, and a plurality of rollers and spacers. The bearing with high rotation accuracy capable of bearing loads in every direction. Because it has orthogonally arranged cylindrical rollers, it can bear loads in every direction. CZPT provides 2 kinds of bearings: Deep Groove Ball Bearing and Angular Contact Ball Bearings.
∞ ACBB, which is the abbreviation of angular contact ball bearings. With different contact angles, the higher axial load can be well taken care now. CZPT standard ball bearings are the perfect solution for high runout accuracy applications such as machine tool main spindles.
∞ Deep groove ball bearings are widely used in many industries for decades. A deep groove is formed on each inner and outer ring of the bearings enabling them to sustain radial and axial loads or even combinations of both. As the leading deep groove ball bearing factory, CZPT Bearings owns abundant experience in designing and producing this type of bearing.
Application:
1. Medical industry
2.Lithium battery industry
3.Solar photovoltaic industry
4. Semi conductor Industry
5. General industry machinery
6. Machine tool
7. Parking system
8. High-speed rail and aviation transportation equipment
9. 3C industry etc
Technical Drawing
Specification List
| Boundary Dimensions (mm) | Basic Load Ratings | Static Axial Load Capacity | Bearing Numbers Type | Load Center | Limiting Speeds nL (min1) | Reference Dimensions (mm) | Abutment and Dimensions (mm) | Space Capacity (cm3) | Weight (kg) | |||||||||||||||
| d | D | B | r | r1 | Cr | cr | (KN) | C” | (KN) | (Kgf) | a | Grease | Oil | d, | D, | d2 | 4 | Da | Db | % | 1as | Open (Approx) | Open (Approx) | |
| min | min | (KN) | (Kgf) | (Kgf) | min | max | max | max | max | |||||||||||||||
| 10 | 26 | 8 | 0.3 | 0.15 | 5.1 | 520 | 2.41 | 246 | 2.33 | 238 | 7000AD* | 8.2 | 55000 | 84700 | 15.4 | 20.6 | 22.7 | 12.5 | 23.5 | 24.8 | 0.3 | 0.15 | 0.9 | 0.019 |
| 12 | 28 | 8 | 0.3 | 0.15 | 5.2 | 530 | 2.53 | 258 | 3.1 | 318 | 7001 AD* | 8.8 | 49500 | 76100 | 18 | 22.9 | 25.2 | 14.5 | 25.5 | 26.8 | 0.3 | 0.15 | 1 | 0.571 |
| 15 | 32 | 9 | 0.3 | 0.15 | 5.95 | 605 | 3.2 | 330 | 3.75 | 385 | 7002AD* | 10 | 42100 | 64800 | 21.1 | 25.9 | 28.2 | 17.5 | 29.5 | 30.8 | 0.3 | 0.15 | 1.3 | 0.03 |
| 17 | 35 | 10 | 0.3 | 0.15 | 6.3 | 640 | 3.6 | 370 | 3.9 | 400 | 7003AD* | 11.1 | 38100 | 58600 | 23.4 | 29 | 30.7 | 19.5 | 32.5 | 33.8 | 0.3 | 0.15 | 1.8 | 0.037 |
| 20 | 42 | 12 | 0.6 | 0.3 | 10.5 | 1080 | 6.25 | 640 | 7.55 | 770 | 7004AD* | 12.2 | 31900 | 49200 | 27.5 | 34.5 | 37.3 | 24.5 | 37.5 | 39.5 | 0.6 | 0.3 | 2.9 | 0.067 |
| 25 | 47 | 12 | 0.6 | 0.3 | 11 | 1130 | 7.05 | 720 | 8.2 | 840 | 7005AD | 14.4 | 27500 | 42400 | 32.5 | 39.5 | 42.3 | 29.5 | 42.5 | 44.5 | 0.6 | 0.3 | 3.3 | 0.079 |
| 30 | 55 | 13 | 1 | 0.6 | 14.4 | 1470 | 9.8 | 1000 | 11.5 | 1180 | 7006AD | 15.9 | 23300 | 35800 | 38.6 | 46.4 | 49.5 | 35.5 | 49.5 | 50.5 | 1 | 0.6 | 4.8 | 0.11 |
| 35 | 62 | 14 | 1 | 0.6 | 18.2 | 1860 | 13 | 1330 | 14.1 | 1440 | 7007AD | 17.8 | 20500 | 31400 | 44.2 | 52.8 | 56.3 | 40.5 | 56.5 | 57.5 | 1 | 0.6 | 6.3 | 0.15 |
| 40 | 68 | 15 | 1 | 0.6 | 19.5 | 1990 | 15.1 | 1540 | 16.4 | 1680 | 7008AD* | 19.6 | 18300 | 28300 | 49.6 | 58.3 | 61.8 | 45.5 | 62.5 | 63.5 | 1 | 0.6 | 7.4 | 0.19 |
| 45 | 75 | 16 | 1 | 0.6 | 23 | 2350 | 18.2 | 1860 | 20.6 | 2100 | 7009AD* | 21.5 | 16500 | 25400 | 55.2 | 64.8 | 68.6 | 50.5 | 69.5 | 70.5 | 1 | 0.6 | 9.4 | 0.24 |
| 50 | 80 | 16 | 1 | 0.6 | 24.6 | 2510 | 20.7 | 2120 | 23.1 | 2360 | 7571AD | 23.2 | 15200 | 23500 | 60.2 | 69.8 | 73.6 | 55.5 | 74.5 | 75.5 | 1 | 0.6 | 11 | 0.26 |
| 55 | 90 | 18 | 1.1 | 0.6 | 32 | 3300 | 27.1 | 2770 | 30 | 3100 | 7011 AD | 25.9 | 13700 | 21100 | 66.8 | 78.1 | 82.7 | 62 | 83 | 85.5 | 1 | 0.6 | 16 | 0.38 |
| 60 | 95 | 18 | 1.1 | 0.6 | 33 | 3350 | 29.1 | 2970 | 31 | 3200 | 7012AD | 27.1 | 12800 | 19700 | 71.8 | 83.1 | 87.6 | 67 | 88 | 90.5 | 1 | 0.6 | 17 | 0.41 |
| 65 | 100 | 18 | 1.1 | 0.6 | 35 | 3550 | 32 | 3300 | 33 | 3400 | 7013AD | 28.2 | 12000 | 18500 | 76.8 | 881 | 92.6 | 72 | 93 | 95.5 | 1 | 0.6 | 18 | 0.44 |
| 70 | 110 | 20 | 1.1 | 0.6 | 44 | 4500 | 40.5 | 4150 | 42 | 4300 | 7014AD | 31 | 11000 | 17000 | 83.6 | 96.4 | 101.7 | 77 | 103 | 105.5 | 1 | 0.6 | 24 | 0.61 |
| 75 | 115 | 20 | 1.1 | 0.6 | 45 | 4600 | 43 | 4400 | 47 | 4800 | 7015 AD | 22.1 | 10500 | 16100 | 88.5 | 101.5 | 106.7 | 82 | 108 | 110.5 | 1 | 0.6 | 26 | 0.64 |
| 80 | 125 | 22 | 1.1 | 0.6 | 55.5 | 5650 | 52 | 5350 | 58.5 | 5950 | 7016AD | 34.9 | 9700 | 14900 | 95.1 | 109.9 | 115.8 | 87 | 118 | 120.5 | 1 | 0.6 | 34 | 0.86 |
| 85 | 130 | 22 | 1.1 | 0.6 | 56.5 | 5800 | 55.5 | 5650 | 61 | 6200 | 7017AD | 36.1 | 9200 | 14200 | 100.1 | 114.9 | 120.8 | 92 | 123 | 125.5 | 1 | 0.6 | 36 | 0.9 |
| 90 | 140 | 24 | 1.5 | 1.1 | 67.5 | 6900 | 65.5 | 6650 | 75 | 7650 | 7018AD | 38.8 | 8600 | 13300 | 106.8 | 123.2 | 129.8 | 98.5 | 131.5 | 134.5 | 1.5 | 1 | 47 | 1.17 |
| 95 | 145 | 24 | 1.5 | 1.1 | 69.5 | 7050 | 69 | 7050 | 77.5 | 7900 | 7019AD* | 40 | 8300 | 12700 | 111.7 | 128.2 | 134.8 | 103.5 | 136.5 | 139.5 | 1.5 | 1 | 49 | 1.22 |
| 100 | 150 | 24 | 1.5 | 1.1 | 71 | 7250 | 73 | 7450 | 82.5 | 8450 | 7571AD | 41.1 | 7900 | 12200 | 116.8 | 132.2 | 139.8 | 108.5 | 141.5 | 144.5 | 1.5 | 1 | 51 | 1.27 |
FACTORY DETAILED PROCESSING PHOTOS
HIGH QUALITY CONTROL SYSTEM
FAQ
1. Why choose CZPT China?
Over the past 17 years, CZPT has always insisted that “products and services” start from Japanese industry standards,taking ZheJiang standards as the bottom line, actively invest in the development of new transmission components and self-experiment and test. With the service tenet of “exceeding customer expectations”, establish a “trusted” partnership.
2. What is your main products ?
We are a leading manufacturer and distributor of linear motion components in China. Especially miniature size of Ball Screws and Linear Actuators and linear motion guideways. Our brand “KGG” stands for ” Know-how,” ” Great Quality,” and ” Good value” and our factory is located in the most advanced city in China: ZheJiang with the best equipment and sophisticated technology, completely strict quality control system. Our aim is to supply world leader class linear motion components but with most reasonable price in the world.
3. How to Custom-made (OEM/ODM)?
If you have a product drawing or a sample, please send to us, and we can custom-made the as your required. We will also provide our professional advices of the products to make the design to be more realized & maximize the performance.
4. When can I get the quotation?
We usually quote within 24 hours after we get your inquiry. If you are very urgent to get the price,please call us or tell us in your email so that we will regard your inquiry priority.
5. How can I get a sample to check the quality?
After confirmation of our quoted price, you can place the sample order. The sample will be started after you sign back our detailed technical file.
6. What’s your payment terms?
Our payment terms is 30% deposit,balance 70% before shipment. /* 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
| Contact Angle: | 25° |
|---|---|
| Aligning: | Non-Aligning Bearing |
| Separated: | Separated |
| Rows Number: | Single |
| Load Direction: | Radial Bearing |
| Material: | Bearing Steel |
| 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.

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.

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 2024-03-29
China Professional High Precision Stainless Steel Deep Groove Ball Bearing 61802 for Engineering Machine bearing example
Product Description
Product Description
Structure and Parts of Bearings
Cage
In daily operations, cage will be subjected not only to mechanical action from friction, tension and inertial force, but to chemical reaction from lubricants, additives, solvents or coolants. Therefore, design and materials of cage are very inportant for its performance and the reliability of bearing in usage.
Flate/FUDA offers the following kinds of cage for deep groove ball bearings:
Materials of Bearings
Materials for bearing rings and parts largely determine the bearing’s performance and life. FLATE/FUDA puts more efforts to select materials for bearing rings and part suppliers in a rigorous manner.
Materials and components of bearing rings for FLATE/FUDA bearings are provided by the world’s top suppliers special for serving bearign manufacturers, fundamentally solvign the issue that our bearings lag behind imported bearings in terms of materialsfor a long time.
FLATE boasts a set of strict and polished incoming goods inspection system. Before being put into storage, every batch of steels and parts is under systemic inspection, including analysis of material composition, metallographice analysis, accuracy check, assembly test, etc.
Materials for Bearing Ring and Roller Body
Bearing ring and roller body are mainly made of high C-Cr bearing steel. Listed below are compositions of material for bearing ring and roller body.
| Steel Code | Chemical composition% | ||||||||
| Gcr15 SAE52100 DIN 100 Cr6 JIS SUJ2 |
C | Si | Mn | P | S | Cr | Mo | Cu | Ni |
| 0.95-1.05 | 0.15-0.35 | 0.25-0.45 | <0.571 | <0.571 | 1.40-1.65 | – | <0.25 | <0.30 | |
Material for bearing ring and roller body mainly consists of high C-Cr bearing steel.
Material of cages
Material of cages need good wear resistance, stable size and metal strength. Therefore, operation environment should be mainly considered in selection of material of cages.
Drawing steel sheet cage
These light cages hold a high strength with reduced friction and wear in an effective way after surface treatment. The following table covers compositions of material for cold-rolled steel sheet.
| Steel code | Chemical Composition% | ||||||
| JISG 3141 SPCC |
C | Si | Mn | P | S | Ni | Cr |
| <0.12 | – | <0.5 | <0.04 | <0.045 | – | – | |
Brass cage
Cut brass cage is adopted in small and medium bearings. However, brass cage is not suitable for compressors with ammonia cooling due to potential seasonal cracking of brass. It is recommended to replace it with iron cage.
Nylon cage
According to the type and usage of bearings, nylon cages are widely adopted, but they are inappropriate for environments where the temperature is above 120ºC or below 40 ºC. Most of cast molding cages adopt nylon PA66 material, with or without glass fiber reinforcement whose advantage is a good combination of strength and elasticity.
Materials for dust shield and seal ring
Material for dust shield
FLATE/FUDA bearings use cold-rolled tin plate as the standard mateiral for dust shields, but also use stainless steel of AISI-300 specification at times.
Material for seal ring
Seal rings are mainly made of NBR. For high temperature, fluororubbers and silicon rubbers are widely used as well.
| Type | ASTM D1418 Name | Temperature Range | Hardness (Shore A) |
Features | Restriction |
| Nitrile butaduene rubber | NBR | -40ºC~120ºC | 40-90 | Low compression High ductility High corrosion resistance superior oil resistance |
Unsuitable for high temperature conditions; No exposure to the sun and corrosion of chemicals |
| Silicon rubber | MQ/PMQ VMQ/PVMP |
-70ºC~200ºC | 25-80 | High temperature resistance Desiccation resistance Sunshine resistance aging resistance to ozone |
Poor surface abrasion performance and crack resistance, higher wear resistance |
| Hydrogenated (nitrile-butadiene rubber) |
HNBR/NEM | -35ºC~65ºC | 50-90 | Heat resistance High ductility Chemical resistance |
Unsuitable for high temperature conditions and shall avoid exposure to the sun and corrosion of chemicals |
| Fluororubber | FKM/FPM | -28ºC~200ºC | 50-95 | High temperature resistance Significant chemical resistance corrosion resistance to petroleum products |
It is not suitable for working conditions of low temperature. |
| ACM rubber | ACM Rubber | -18ºC~175ºC | 40-90 | Stronger resistance to hot oil Sunlight and ozone Higher crack resistance |
poor waterproof performance; unsuitable for working condition of ultra-low temperature |
| Warning:flurorubber is safe and harmless under normal working condition of below 200ºC, but it will give off smoke if the temperature exceeds the ultimate temperature of 300ºC that is equivalent to flame for cutting steel tubes. Inhalation of the smoke is harmful to human bodies including eyes. In addition, the smoke should be avoided to contact skin. | |||||
Lubrication of Bearings
| Grease lubrication | Lipid lubricants are much easier to use than oil lubricants. Due to its ciscosity,grease is more durable and only needs simple sealing equipment to contain. Grease is hard to be changed, beacause the usual approach of it is to press grease into device to make fresh grease squeeze used grease out. General speaking, grease with low viscosity primary oil is more suitable for high speed operations at low temperature, while grease with high viscosity primary oil is suitable for heavy load. |
| Oil lubrication | Oil lubrication is more suitbale for applications under conditions of high speed and high temperature, effectively taking the heat generated in operation of bearings away. Viscosity of oil determines the effects of oil lubrication. Low viscosity will lead to inadequate formation of oil film, while high viscosity will increase viscous drag and temperature. In general, the higher rotational speed is the lower viscosity of lubricant oil will be; the larger load is, the higher viscosity of lubricant oil will be. |
| Primary oil | In grease, primary oil accounts for 75-96%. In mass fraction, the performance of grease mainly relies on the nature of primary oil. Particularly when it is with cold flow property and at high temperature, its service life is bound up with primary oil. Grease with low viscosity primary oil is usually applicable to low temperature and low load, while lubrication grease with high viscosity primary oil is applied to high temperature and high load. Primary oil used in grease includes mineral oil and synthetic oil. The commonly used synthetic primary oils contain lipid oil, sythetic hydrocarbon oil, perfluoropolyether, silicon oil and PPO, etc. |
| Thickener | Thickener generally accounts for 4~20% in mass fraction. Its functions are to suspend primaty oil, reduce the flow of primaty oil, and increase adhesion of oil to friction surface. Thickener has 2 categories: metallic soap base and non-metallic soap base. Critical operating temperature, mechanical stability, water resistance and other properties of grease are determined by thickener, for example, sodium soap base can react with water to form a kind of latex, which can not be applied to running bearing in the atomsphere of high temperature. |
| Additive | In grease, primary oil accounts for 0.5~10%. In mass fraction, which is used for the improvement of operating performance and life of grease. Accordign to the classification by function, it can be divided into thickener(strong adhesion), antioxidant, extreme-pressure additive, corrosion inhibitor,etc. |
/* 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(/(.*?):(.*)$/))&&1
| Contact Angle: | 45° |
|---|---|
| Aligning: | Non-Aligning Bearing |
| Separated: | Unseparated |
| Rows Number: | Multiple |
| Load Direction: | Radial Bearing |
| Material: | AISI440, 440c, 304 |
| Samples: |
US$ 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.

What are the Differences between Deep Groove Ball Bearings and Angular Contact Ball Bearings?
Deep groove ball bearings and angular contact ball bearings are two common types of ball bearings, each designed for specific applications and load conditions. Here are the key differences between these two types of bearings:
- Design and Geometry:
Deep Groove Ball Bearings:
Deep groove ball bearings have a simple design with a single row of balls that run along deep raceways in both the inner and outer rings. The rings are usually symmetrical and non-separable, resulting in a balanced load distribution.
Angular Contact Ball Bearings:
Angular contact ball bearings have a more complex design with two rows of balls, oriented at an angle to the bearing’s axis. This arrangement allows for the transmission of both radial and axial loads, making them suitable for combined loads and applications requiring high precision.
- Load Carrying Capacity:
Deep Groove Ball Bearings:
Deep groove ball bearings are primarily designed to carry radial loads. They can handle axial loads in both directions, but their axial load-carrying capacity is generally lower compared to angular contact ball bearings.
Angular Contact Ball Bearings:
Angular contact ball bearings are specifically designed to handle both radial and axial loads. The contact angle between the rows of balls determines the bearings’ axial load-carrying capacity. They can handle higher axial loads and are commonly used in applications with thrust loads.
- Contact Angle:
Deep Groove Ball Bearings:
Deep groove ball bearings have no defined contact angle, as the balls move in a deep groove along the raceways. They are primarily designed for radial loads.
Angular Contact Ball Bearings:
Angular contact ball bearings have a specified contact angle between the rows of balls. This contact angle allows them to carry both radial and axial loads and is crucial for their ability to handle combined loads.
- Applications:
Deep Groove Ball Bearings:
Deep groove ball bearings are commonly used in applications that primarily require radial loads, such as electric motors, pumps, and conveyor systems. They are also suitable for high-speed operation.
Angular Contact Ball Bearings:
Angular contact ball bearings are used in applications where both radial and axial loads are present, such as in machine tools, automotive wheel hubs, and aerospace components. They are especially useful for applications that require precise axial positioning and handling of thrust loads.
- Limitations:
Deep Groove Ball Bearings:
Deep groove ball bearings are not as suitable for handling significant axial loads and may experience skidding under certain conditions due to their deep raceways.
Angular Contact Ball Bearings:
Angular contact ball bearings can experience increased heat generation and wear at higher speeds due to the contact angle of the balls.
In summary, the design, load-carrying capacity, contact angle, and applications differ between deep groove ball bearings and angular contact ball bearings. Choosing the appropriate type depends on the specific load conditions and requirements of the application.

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 2024-03-27
China supplier 2X5X2.5 mm Mr52zz Mr52-Zz/2z/Z L520zzw52 Steel Metal Shields Miniature Ball Bearing for Office Equipment CZPT Motor Fan Instrument Toy Model Dental Machine near me shop
Merchandise Description
Factory
Production Workshop
Inspection
Warehouse
Software
Sorts of Ball Bearings
In their most simple sort, Ball Bearings have one particular typical function – they are made of steel. The bulk of these bearings are produced of 52100 metal, which has 1 p.c chromium and one particular percent carbon. The steel can be hardened by warmth trea
tment. 440C stainless steel is employed for rusting issues. A cage around the ball balls is typically created from slender steel. Nonetheless, some bearings use molded plastic cages to save funds and friction.
Single-row patterns
Steel linear translation levels typically use solitary-row types for ball bearings. These types of bearings supply clean linear travel and can withstand substantial loads. The material steel has a higher modulus of elasticity and a higher stiffness, as nicely as a decrease thermal expansion than aluminum. For these motives, metal is the content of selection for a ball bearing in a common consumer atmosphere. Single-row patterns for ball bearings are also suited for applications in humid or corrosive environments.
Solitary-row types for ball bearings are offered in a range of measurements and are axially adjustable. They have a substantial radial potential, but require relatively minor place. Single-row deep groove ball bearings with snap rings are STN 02 4605 or R47, respectively. Bearings with snap rings are determined by a suffix these kinds of as NR. They may possibly not have seals or shields mounted.
These single-row angular get in touch with ball bearings are able of supporting axial and radial hundreds. In a two-raceway arrangement, the radial load on bearing A leads to a radial load to act on bearing B. Equally axial and radial forces are transmitted among single-row angular contact ball bearings, and the ensuing inside pressure should be taken into account to calculate equal dynamic bearing loads P.
Solitary-row deep groove ball bearings are the most common type of ball bearings. These bearings are created with only a single row of rolling elements. The single-row layout is straightforward and sturdy, which helps make it best for higher-velocity applications. Solitary-row patterns for ball bearings are also available in a variety of bore dimensions. They can also arrive in a selection of styles and are non-separable. If you want a higher-pace bearing, you may want to decide for a double-row style.
In addition to solitary-row patterns for ball bearings, you can choose ceramic or metal ball bearings. Ceramic balls are significantly harder than steel balls, but they are not as challenging as steel. That’s why, ceramic bearings are stiffer than metal ball bearings, ensuing in increased tension on the outer race groove and reduced load ability. This is a excellent benefit for people who need the bearings to be lightweight and strong.
The big difference among single-row and double-row patterns is in the way that the internal and outer ring are mounted. A single-row layout locations the internal ring in an eccentric situation relative to the outer ring. The two rings are in contact at one stage, which leads to a big gap in the bearing. The balls are then inserted via the gap. As a result, the balls are evenly distributed through the bearing, which forces the inner and outer rings to become concentric.
Deep-groove ball bearings are one of the most common types of ball bearings. They are obtainable in diverse designs, like snap-ring, seal and shield preparations. The race diameter of a deep-groove ball bearing is shut to the ball’s diameter. These sorts of bearings are suited for heavy loads, and their axial and radial help are superb. Their major downside is that the contact angle are not able to be adjusted to accommodate a vast variety of relative hundreds.
Ceramic hybrid ball bearings
Hybrid ball bearings with ceramic balls have many positive aspects. They characteristic enhanced kinematic conduct and call for much less lubrication. As a result, they can reduce operating fees. Additionally, their minimal thermal expansion coefficient permits for scaled-down changes in speak to angle and preload variations, and they can retain tolerances. Furthermore, ceramic hybrid ball bearings have significantly enhanced lifestyle spans compared to conventional metal-metal ball bearings, with up to 10 instances the lifespan.
Despite the fact that ceramic bearings can be utilised in automotive apps, a lot of men and women think that they’re a poor option for bicycle hubs. They never decrease bodyweight and only work nicely in large-rpm environments. As a consequence, several cyclists do not even bother with ceramic-based mostly bearings. Nonetheless, each Paul Lew and Alan are of the viewpoint that ceramic bearings are greatest suited for industrial or health-related products purposes. Furthermore, Paul and Alan imagine that they are excellent for large-altitude drone motors.
One more advantage of ceramic hybrid ball bearings is that they use considerably less friction than standard metal-primarily based balls. They are also a lot more resilient, requiring much less lubrication than metal-based bearings. In addition, the decrease friction and rolling resistance associated with ceramic-based mostly ball bearings means that they can previous ten occasions for a longer time than metal-dependent bearings. A ceramic-based mostly hybrid ball bearing can be utilised for apps where velocity and lubrication are essential.
Ceramic hybrid ball bearings attribute the two steel and silicon nitride balls. Silicon nitride balls have fifty% more modulus of elasticity than steel balls and can enhance accuracy and precision. Ceramic balls also have a smoother surface area complete than metal balls, which reduces vibration and spindle deflection. These positive aspects consequence in increased speed and enhanced creation good quality. In addition to this, ceramic balls can also decrease the functioning temperature, improving the function surroundings.
Hybrid bearings are a popular substitute to steel bearings. They have some benefits above traditional steel bearings, and are turning into a popular choice for engineered applications. Hybrid bearings are excellent for high pace devices. The content employed to manufacture ceramic balls is a higher-top quality alloy, and is comparatively economical. But you have to recognize that lubrication is nonetheless necessary for hybrid bearings. If you are not cautious, you may conclude up wasting income.
These ball bearings can be utilised in numerous industries and applications, and they are widely suitable with most metals. The principal edge of hybrid ball bearings is that they are very tough. Even though metal balls have a tendency to corrode and put on out, ceramic ball bearings can withstand these conditions while minimizing routine maintenance and substitution expenses. The benefits of hybrid ball bearings are clear. So, consider switching to these newer varieties of ball bearings.
Self-aligning ball bearings
Self-aligning ball bearings are a very good choice for several programs. They are a great alternative to standard ball bearings, and they are best for rotating programs in which the shaft need to transfer in several directions. They are also excellent for use in rotating elements where a restricted tolerance is required. You can choose between two types: simple and flex shaft. Read on to find out which one will match your needs.
Self-aligning ball bearings are developed with a larger axial load carrying potential than single-row radial deep groove ball bearings. The quantity of axial load carrying capacity is dependent upon the pressure angle. These bearings have a hollow raceway in the outer ring that enables the inner ring to pivot with no friction. They are typically utilized for high-pace apps. Since of their design, they are highly correct.
Self-aligning ball bearings are radial bearings that feature two rows of balls in a spherical outer ring. They also attribute two deep uninterrupted raceway grooves in the inner ring. Their distinctive attributes make them an superb selection for apps in which shaft deflection is a significant factor. In spite of their small dimensions, they have a high level of precision and can withstand hefty hundreds.
Self-aligning ball bearings can compensate for misalignment in shaft purposes. The internal ring and ball assembly are positioned inside of an outer ring that contains a curved raceway. This spherical design allows the balls and cage to deflect and re-align close to the bearing heart. These bearings are also excellent for applications the place shaft deflection is substantial, this kind of as in basic woodworking equipment.
An additional type of self-aligning ball bearing uses a frequent concave outer race. Equally balls and outer races immediately compensate for angular misalignment caused by machining, assembly, and deflections. In comparison to spherical rollers, they have reduced frictional losses than their spherical counterparts. Self-alignment ball bearings also have lower vibration ranges in contrast to other types of bearings.
Self-aligning ball bearings work in misaligned purposes due to the fact their spherical outer raceway can accommodate misalignment. This style allows them to operate in applications the place shaft deflection or housing deformation is frequent. They are consequently more suitable for reduced to medium-sized hundreds. The only true downside to self-aligning ball bearings is their cost. If you require to buy a self-aligning ball bearing for your next venture, you can assume to shell out all around $1500.

