Tag Archives: mini ball bearing

China supplier China Manufacturer Double Shielded Miniature High Carbon Chrome Steel Mini Deep Groove Ball Bearing (608zz 623zz 624zz 625zz 626zz 688zz 635zz) deep groove ball bearing

Product Description

China Factory 3d Printer Parts Deep Groove Ball Bearing 623zz 624zz 625zz 626zz 635zz 608zz 688zz

Single row deep groove ball bearings are particularly versatile. They are simple in design, non-separable, suitable for high and even very high speeds and are robust in operation, requiring little maintenance. Deep raceway grooves and the close conformity between the raceway grooves and the balls enable deep groove ball bearings to accommodate axial loads in both directions, in addition to radial loads, even at high speeds.

1. 623zz : 3mm*10mm*4mm
2. 624zz : 4mm*13mm*5mm
3. 625zz : 5mm*16mm*5mm
4. 626zz : 6mm*19mm*6mm
5. 608zz : 8mm*22mm*7mm
6. 688zz : 8mm*16mm*5mm
7. 635zz : 5mm*19mm*6mm

Detailed Photos

Product Parameters

Product Description

Any combination of closures is available

Basic Bearing No.	Nominal Bearing Dimensions						Preferred Shoulder Diameters
	d		D		B,C		r (min)		da (min)		da (max)		Da (max)
	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch
604	4	0.1575	12	0.4724	4	0.1575	0.2	0.008	5.4	0.2126	6.6	0.2598	10.6	0.4173
605	5	0.1969	14	0.5512	5	0.2756	0.2	0.008	6.6	0.2600	7.4	0.2913	12.4	0.4880
606	6	0.2362	17	0.6693	6	0.2756	0.3	0.012	8.0	0.3150	8.6	0.3386	15.0	0.5910
607	7	0.2756	19	0.748	6	0.2756	0.3	0.012	9.0	0.3543	10.4	0.4094	17.0	0.6693
608	8	0.3149	22	0.8661	7	0.2756	0.3	0.012	10.0	0.3937	12.2	0.4803	10.0	0.7874
609	9	0.3543	24	0.9449	7	0.2756	0.3	0.012	11.0	0.4331	13.1	0.5157	12.0	0.8661

Basic Bearing No.	Nominal Bearing Dimensions						Preferred Shoulder Diameters
	d		D		B,C		r (min)		da (min)		da (max)		Da (max)
	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch
624	4	0.1575	13	0.5118	5	0.1968	0.2	0.007	5.6	0.220	6.2	0.244	11.4	0.449
625	5	0.1969	13	0.6299	5	0.1968	0.3	0.012	7.0	0.276	7.6	0.299	14.0	0.551
626	6	0.2362	16	0.7480	6	0.2362	0.3	0.012	8.0	0.315	9.5	0.374	17.0	0.669
627	7	0.2756	22	0.8661	7	0.2756	0.3	0.012	9.0	0.354	12.2	0.480	20.0	0.787
628	5	0.3149	24	0.9448	8	0.3149	0.3	0.012	10.0	0.394	12.1	0.476	17.0	0.669
629	9	0.3543	26	1.5716	8	0.3149	0.3	0.012	11.5	0.453	…	…	14.0	0.945

Basic Bearing No.	Nominal Bearing Dimensions						Preferred Shoulder Diameters
	d		D		B,C		r (min)		da (min)		da (max)		Da (max)
	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch
635	5	0.1969	19	0.7480	6	0.2362	0.3	0.012	7.0	0.276	9.5	0.374	17.0	0.669
636	6	0.2362	22	0.8661	7	0.8661	0.3	0.012	…	…	…	…	…	…
637	7	0.2756	26	1.5716	9	0.3543	0.3	0.012	…	…	…	…	…	…
638	8	0.3149	28	1.1571	9	0.3543	0.3	0.012	10.0	0.394	…	…	26.0	1.571
639	9	0.3543	30	1.1811	10	0.3937	0.6	0.571	…	…	…	…	…	…

Basic Bearing No.	Nominal Bearing Dimensions								Preferred Shoulder Diameters
	d		D		B				r (min)		da (min)		da (max)		Da (max)
	d		D		Open		Shielded sealed		r (min)		da (min)		da (max)		Da (max)
	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch
685	5	0.1969	11	0.4331	3	0.1181	5	0.1969	0.15	0.006	6.2	0.244	6.2	0.244	9.9	0.390
686	6	0.2362	13	0.5118	3.5	0.1378	5	0.1969	0.15	0.006	7.4	0.291	7.4	0.291	11.7	0.461
687	7	0.2756	14	0.5512	3.5	0.1378	5	0.1969	0.15	0.006	8.5	0.335	8.5	0.335	12.7	0.500
688	8	0.3150	16	0.6299	4	0.1575	5	0.1969	0.20	0.008	…	…	…	…	…	…
689	9	0.3543	17	0.6693	4	0.1575	5	0.1969	0.20	0.008	10.7	0.421	10.7	0.421	15.2	0.598

Basic Bearing No.	Nominal Bearing Dimensions						Preferred Shoulder Diameters
	d		D		B,C		r (min)		da (min)		da (max)		Da (max)
	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch	mm	inch
693	3	0.1181	8	0.3150	3	0.1181	0.15	0.006	4.3	0.169	4.3	0.169	7.3	0.287
W693	3	0.1181	8	0.3150	4	0.1575	0.15	0.006	4.2	0.165	4.2	0.165	6.8	0.268
694	4	0.1575	11	0.4331	4	0.1575	0.20	0.008	5.2	0.205	5.2	0.205	9.8	0.386
695	5	0.1969	13	0.5118	4	0.1575	0.20	0.008	6.6	0.260	6.6	0.260	11.4	0.449
696	6	0.2362	15	0.5906	5	0.1969	0.30	0.012	7.6	0.299	7.6	0.299	13.4	0.528
697	7	0.2756	17	0.6693	5	0.1969	0.30	0.012	9.0	0.354	9.0	0.354	15.0	0.591
698	8	0.3150	19	0.7480	6	0.2362	0.30	0.012	10.0	0.394	10.0	0.394	16.5	0.650
699	9	0.3543	20	0.7874	6	0.2362	0.30	0.012	11.0	0.433	11.6	0.457	18.0	0.709

Common Options
Z ZZ RS 2RS	: One Shield : Two Shields : One Contact Seal : Two Contact Seals

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Aligning:	Non-Aligning Bearing
Separated:	Unseparated
Rows Number:	Single
Load Direction:	Radial Bearing
Material:	Bearing Steel
Transport Package:	Industrial Exporting Packing,or Upon The Customer′

Customization:	Available \| Customized Request

ball bearing

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.

ball bearing

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.

ball bearing

How does Lubrication Impact the Performance and Lifespan of Ball Bearings?

Lubrication plays a critical role in the performance and lifespan of ball bearings. Proper lubrication ensures smooth operation, reduces friction, minimizes wear, and prevents premature failure. Here’s how lubrication impacts ball bearings:

Friction Reduction:

Lubrication creates a thin film between the rolling elements (balls) and the raceways of the bearing. This film reduces friction by separating the surfaces and preventing direct metal-to-metal contact. Reduced friction results in lower energy consumption, heat generation, and wear.

Wear Prevention:

Lubricants create a protective barrier that prevents wear and damage to the bearing’s components. Without proper lubrication, the repeated rolling and sliding of the balls against the raceways would lead to accelerated wear, surface pitting, and eventual failure.

Heat Dissipation:

Lubricants help dissipate heat generated during operation. The rolling elements and raceways can generate heat due to friction. Adequate lubrication carries away this heat, preventing overheating and maintaining stable operating temperatures.

Corrosion Resistance:

Lubrication prevents moisture and contaminants from coming into direct contact with the bearing’s surfaces. This helps protect the bearing against corrosion, rust, and the formation of debris that can compromise its performance and longevity.

Noise Reduction:

Lubricated ball bearings operate quietly because the lubricant cushions and dampens vibrations caused by the rolling motion. This noise reduction is crucial in applications where noise levels need to be minimized.

Seal Protection:

Lubricants help maintain the effectiveness of seals or shields that protect the bearing from contaminants. They create a barrier that prevents particles from entering the bearing and causing damage.

Improved Efficiency:

Properly lubricated ball bearings operate with reduced friction, leading to improved overall efficiency. This is especially important in applications where energy efficiency is a priority.

Lifespan Extension:

Effective lubrication significantly extends the lifespan of ball bearings. Bearings that are properly lubricated experience less wear, reduced fatigue, and a lower likelihood of premature failure.

Selection of Lubricant:

Choosing the right lubricant is essential. Factors such as speed, temperature, load, and environmental conditions influence the choice of lubricant type and viscosity. Some common lubricant options include grease and oil-based lubricants.

Regular Maintenance:

Regular lubrication maintenance is crucial to ensure optimal bearing performance. Bearings should be inspected and relubricated according to manufacturer recommendations and based on the application’s operating conditions.

In summary, proper lubrication is essential for the optimal performance, longevity, and reliability of ball bearings. It reduces friction, prevents wear, dissipates heat, protects against corrosion, and contributes to smooth and efficient operation in various industrial and mechanical applications.

China supplier China Manufacturer Double Shielded Miniature High Carbon Chrome Steel Mini Deep Groove Ball Bearing (608zz 623zz 624zz 625zz 626zz 688zz 635zz) deep groove ball bearing
editor by CX 2024-04-17

China Professional Best Price High Quality 6201 6201zz 62012RS 1201 Mini Chrome Steel Material Deep Groove Ball Bearing bearing driver kit

Product Description

Product Description:

Product details:

Deep groove ball bearing

High quality

High precision

High speed

Durable

Competitive price

Super popular

Long life

Low noise

Specification:

6200 series
6200	10	30	9	0.6	5.1	2.38	25000	30000	0.032
6201	12	32	10	0.6	6.82	3.05	22000	26000	0.035
6202	15	35	11	0.6	7.65	3.72	19000	23000	0.045
6203	17	40	12	0.6	9.58	4.78	18000	21000	0.064
6204	20	47	14	1	12.8	6.65	16000	18000	0.103
6205	25	52	15	1	14	7.88	13000	15000	0.127
6206	30	62	16	1	19.5	11.5	11000	13000	0.2
6207	35	72	17	1.1	25.5	15.2	9800	11000	0.288
6208	40	80	18	1.1	29.5	18	8700	10000	0.368
6209	45	85	19	1.1	31.5	20.5	7800	9200	0.416
6210	50	90	20	1.1	35	23.2	7100	8300	0.463
6211	55	100	21	1.5	43.4	29.4	6400	7600	0.607
6212	60	110	22	1.5	52.4	36.2	6000	7000	0.783
6213	65	120	23	1.5	57.2	40.1	5500	6500	0.99
6214	70	125	24	1.5	62.2	44.1	5100	6000	1.07
6215	75	130	25	1.5	67.4	48.3	4800	5600	1.18
6216	80	140	26	2	72.7	53	4500	5300	1.4
6217	85	150	28	2	84	61.9	4200	5000	1.79
6218	90	160	30	2	96.1	71.5	4000	4700	2.15
6219	95	170	32	2.1	109	81.9	3700	4400	2.62
6220	100	180	34	2.1	122	93.1	3500	4200	3.14
6221	105	190	36	2.1	133	105	3400	4000	3.7
6222	110	200	38	2.1	144	117	3200	3800	4.36
6224	120	215	40	2.1	155	131	2900	3400	5.15
6226	130	230	40	3	167	146	2700	3100	5.82
6228	140	250	42	3	166	150	2500	2900	7.57
6230	150	270	45	3	176	168	2300	2700	9.41

Product Application

Compamy profile:

HangZhou Terry Machinery Co.Ltd is a leading supplier of bearings, Linear motion system for CNC , Ball transfer Unit and transmission component .the growing industrial and Favorable policy of HangZhou benefit the development of Terry Machinery .Our products are utilized in industrial, motorcycle, vehicle and Automation applications. Now we are exporting to 46 countries. including USA, GBR , Germany , Spain, Poland ,Turkey ect .The Goal of Terry Machinery to provide out customers with widest range of products at competitive prices, backed with the best Service.OUR ADVANTAGE Products Our major products & Supplied:Meet all the international standards and ISO9001 -TS1694 Certificate Big volume in Stock, No MOQ required Personnel Our salespersons are well trained to accommodate your requests and speak English for your conveniences.Our technicians and engineers Experience in the Industry area exceeds 23 years Service &Quality control ,We supply detailed drawings and offer when ever necessary,We help all customers promote and improve their sales.We inspect every piece of products by ourselves before delivery.

Packing&Delivery:

FAQ:

Custom Praise:

/* 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

Inside Diameter:	12mm
Outside Diameter:	32mm
Thickness:	10mm

.shipping-cost-tm .tm-status-off{background: none;padding:0;color: #1470cc}

Shipping Cost: Estimated freight per unit.	about shipping cost and estimated delivery time.

Payment Method:
	Initial Payment Full Payment

Currency:	US$

Return&refunds:	You can apply for a refund up to 30 days after receipt of the products.

ball bearing

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.

ball bearing

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.