| After-sales Service: | Available |
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| Warranty: | 1-2 years |
| Certification: | ISO9001 |
| Samples: |
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| Customization: |
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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| Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Suppliers with verified business licenses
Audited Supplier 
| BICYCLE BEARINGS | |
| Bottom Bracket Bearings | Hub Bearing |
| Pedal Bearings | Headset Bearings |
| Derailleur Bearings | Frames Bearings |
| Motor Bearings | V-Max Bearings |
| TECHNICAL DATA | |
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| Bearing Type | Deep Groove Ball Bearing |
| Closures | Seal at each end |
| Bearing No. | 608-2RS |
| Inner Diameter(d) (mm) | 8 |
| Outer Diameter(D) (mm) | 22 |
| Width(B) (mm) | 1 |
| Dynamic Load (kgf) | 336 |
| Static Load (kgf) | 142 |
| Speed Lubricate (Grease) | 32000 |
| Speed Lubricate (Oil) | 37000 |
| Weight(g) | 11.8 |
| CATALOG | ||||||||
| Bearing No. |
Inner Diameter(d) (mm) |
Outer Diameter(D) (mm) |
Width(B) (mm) |
Dynamic Load (kgf) |
Static Load (kgf) |
Speed Lubricate (Grease) |
Speed Lubricate (Oil) |
Weight(g) |
| 608-2RS | 8 | 22 | 1 | 336 | 142 | 32000 | 37000 | 11.8 |
| 6802-2RS | 15 | 24 | 5 | 163 | 107 | 28000 | 33000 | 7 |
| 6804-2RS | 20 | 32 | 7 | 273 | 191 | 21000 | 25000 | 18 |
| 6806-2RS | 30 | 42 | 7 | 355 | 285 | 15000 | 18000 | 26 |
| 6708-2RS | 40 | 50 | 6 | 257 | 228 | 8500 | 15000 | 23 |
| 6810-2RS | 50 | 65 | 7 | SIS | S2S | 9500 | 11000 | 52 |
| 6816-2RS | 80 | 100 | 10 | 990 | 160 | 6000 | 7100 | 150 |
| MOTOR BEARING |
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| COMPOSITION |
| Electric bicycles commonly use ball bearings for their motors. This type of bearing excels in high-speed rotation applications, effectively reducing friction to ensure smoother operation. Motor bearings typically feature sealing or dust-proof designs to prevent dust and other impurities from entering, thereby extending the bearing's lifespan and enhancing performance. |
| CHARACTERISTICS |
| In electric bicycles, the motor bearings are central to the motor's internal components' smooth rotation. These bearings ensure the electric motor operates efficiently, delivering seamless power assistance to the rider's pedaling efforts. Well-maintained motor bearings enhance the e-bike's overall performance, allowing riders to effortlessly conquer hills and challenging terrains. |
| APPLICATION |
| Front Installed Motor Bearing |
| The front-installed motor bearing is positioned at the center of the front wheel in an electric bicycle. It is typically directly connected to the front wheel, providing the driving force for the front-wheel propulsion. The front-installed motor bearing can offer excellent traction, especially on wet or uneven surfaces, enhancing the grip of the front wheel. However, due to its presence, the rotational inertia of the front wheel may be altered, potentially affecting the handling performance and balance of the electric bicycle. |
| Mid-Installed Motor Bearing |
| The mid-installed motor bearing is positioned at the central location of an electric bicycle, typically near the bottom bracket of the frame. It is connected to the bicycle's drivetrain and provides power through the pedal crank. The setup of the mid-installed motor bearing ensures a more balanced power delivery, allowing for efficient utilization of the rider's pedaling force, resulting in higher performance and better balance, making the ride more natural and smooth. |
| Rear Installed Motor Bearing |
| The rear-installed motor bearing is positioned at the center of the rear wheel in an electric bicycle. It is directly connected to the rear wheel, providing the rear-wheel propulsion. A rear-mounted motor can offer excellent traction and stability, especially when climbing slopes or requiring higher torque. This configuration also provides good balance and handling performance as it maintains the traditional rear-wheel drive design of bicycles. |
| MATERIAL SELECTION |
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| High-quality steel, typically chrome steel or stainless steel, is chosen for its durability, hardness, and resistance to corrosion. |
| CUTTING THE RAW MATERIAL |
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| The selected steel is cut into precise shapes using cutting machines or other methods to create the basic components of the bearing, such as the outer ring, inner ring, balls, and cages. |
| FORGING OR TURNING |
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| The outer and inner rings are formed either through forging, where the metal is shaped under high pressure, or turning, where a lathe is used to cut and shape the metal. |
| HEAT TREATMENT |
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| The outer and inner rings are formed either through forging, where the metal is shaped under high pressure, or turning, where a lathe is used to cut and shape the metal. |
| GRINDING |
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| The rings are ground to achieve precise dimensions and smooth surfaces, ensuring proper fit and reduced friction during operation. |
| MACHINING |
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| Various machining operations are performed to create grooves, races, and other features on the rings, as well as to drill holes for lubrication and mounting purposes. |
| ASSEMBLY |
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| The components (rings, balls, and cage) are assembled together with precision to form the complete bearing unit. Lubricants are often applied during assembly to ensure smooth operation. |
| QUALITY CONTROL |
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| Throughout each stage of manufacturing, quality control measures are implemented to ensure that the bearings meet specified standards for dimensions, tolerances, surface finish, and performance characteristics. |
| PACING AND SHIPPING |
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| Once manufactured and inspected, the bearings are packaged securely to protect them during shipping and storage, ready to be distributed to customers for various industrial applications. |
FAQ
1.Q: Do you know the detail size for the bearing ?
A: We have been working in bearings for 18 years and in technical positions for 12 years.
2.Q: Are these size of bearing common parts?
A:These are standard size bearing.
B:We can order non-standard bearings, because we launch a non-standard bearing every 10 days
3.Q: Are you a factory or a trade company for bearing ?
A: We have had our own bearing production plant for 20 years and our own sales team for 16 years
4.Q: How many are the MOQ of the Bearing?
A:100 accept for the standard size.
If you purchase the Non-Standard for BearingThe MOQ is 3000pcs.
5.Q: Could you supply free sample of bearing for our test?
A:Yes, free sample can be offer.
6.Q: Could you accept OEM and customize?
A:Yes, OEM is accepted and we can customize for you according to sample or drawing.
7.Q: Do you have stocks?
A:Yes, most of the bearings showing on are available in stock.
B:But when we are in peak season, stocks consumed, so we need time for production.
Lead time:
General beairngs: 20-30 days
Mounted bearing units: 45-60 days
8.Q : Why choose us ?
A: a. With experiences over 16 years.
B. Strict inspection and high quality with reasonable price.
C. OEM service provided.
D. Delivery time is short.We will deliver goods on time as agreed in the contract.
9.Q: What kinds of bearing you supply?
A: main products are ball bearing, pillow block bearing , plastic bearing, ceramic bearing, and industrial tools, etc, as per customers' drawings or samples.
10.Q: When inspecting bearings, what should we need to consider?
A: The precision of the bearings (dimension tolerance, loading rate), internal clearance and hardness under heat treatment, structure of cage and material.
11.Q: Your product certifications?
A: ISO 9001:2008, RoHS and Reach.
12 .Q: Can I have a sample order?
A: Yes, it is available to check quality first. Mixed samples are also acceptable.
13.Q: What about the lead time?
A: 3-7 days for samples, 3-4 weeks for mass production.
14.Q: What is your payment method?
A: We accept T/T, PAYPAL or Western Union, or credit card.
Suppliers with verified business licenses
Audited Supplier 
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