Hangzhou Huaxing Kechuang Holding Group Co., Ltd. is one of the leading manufacturers and suppliers of motorcycle wheel bearings 6003-2rs 6004-2rs in China. As we have world-leading production equipment and strong manufacturing capabilities, we warmly welcome you to buy bulk high quality bearings at competitive price from our factory.
Motorcycle Wheel Bearings 6003-2RS 6004-2RS
Specifications
|
Item |
6003-2RS |
6004-2RS |
|---|---|---|
|
Bore Diameter |
17 mm |
20 mm |
|
Outer Diameter |
35 mm |
42 mm |
|
Width |
10 mm |
12 mm |
|
Sealing Type |
Double Rubber Seal (2RS) |
Double Rubber Seal (2RS) |
|
Clearance Grade |
C3 (Standard for motorcycle use) |
C3 (Standard for motorcycle use) |
|
Cage Material |
Stamped Steel Cage |
Stamped Steel Cage |
|
Raw Material |
High-carbon Chrome Bearing Steel |
High-carbon Chrome Bearing Steel |
|
Working Temperature |
-30℃ ~ +120℃ |
-30℃ ~ +120℃ |
|
Main Application |
Motorcycle front & rear wheel hubs, light-load rotating parts |
Motorcycle wheel hubs with medium load demand, enhanced stability scenarios |
|
Feature Highlights |
Dustproof, waterproof, anti-rust, precise rotation fit |
Larger bearing area, stronger load capacity, durable operation |
General Technical Notes
Both bearing models adopt international standard dimensional standards, supporting direct replacement and universal assembly.
Double-sided 2RS rubber seals effectively isolate road dust, rainwater and sediment, adapting to complex outdoor riding environments.
C3 clearance design fits high-speed rotating working conditions of motorcycle wheels, avoiding thermal expansion jamming.
Integrated heat treatment process ensures high hardness and structural stability for long-term cyclic operation.
Performance
- Outstanding steady running at high RPM with minimal vibration output
- Greatly boosted dynamic load bearing capability and outstanding anti-fatigue property
- Custom C3 internal clearance design, stable performance under high-temperature working scenarios
- Multi-layer all-weather sealing construction, robust resistance against harsh surroundings
- Extended service life grease filling, quiet running during continuous operation
- Universal standardized structure design, matched with most assemblies and reliable operational safety
Applications
Our standard deep groove ball bearings are universally compatible with most mainstream motorcycle brands and models across the globe. They are extensively applied in core rotating components of motorcycles, including engine crankshafts, transmission systems, front and rear wheel hubs, as well as swing arm parts. The brand-specific compatible models are sorted in detail as follows:
1. Honda Series
2. Yamaha Series
3. Suzuki Series
4. Kawasaki Series
5. Global Universal Models
Motorcycle Bearing Replacement & Installation Notes
Clean Mounting Area: Thoroughly remove dirt, rust, old grease and debris from the wheel hub and shaft before installation. A clean mounting surface prevents abnormal wear, noise and premature bearing failure.
Avoid Forcible Press-Fit: Never hammer or strike the bearing directly during installation. Improper force will damage internal steel balls, seals and clearances, affecting rotation accuracy and service life.
Correct Installation Direction: Install the bearing with sealed faces outward to fully block dust, water and mud intrusion, maximizing the waterproof and dustproof performance of 2RS sealed structure.
Match Standard Dimensions: Strictly select 6003-2RS / 6004-2RS bearings according to original hub and shaft size. Standard dimension tolerance ensures perfect fit without loosening or jamming issues.
Reasonable Lubrication: Do not overfill or lack grease during assembly. Appropriate lubrication volume guarantees low-noise operation and reduces high-speed friction heat.
Check Rotation Flexibility: After installation, manually test wheel rotation to confirm smooth and free movement without stuck, jitter or abnormal resistance before riding.
Avoid Overload Operation: Do not overload or violently drive newly replaced bearings. Gentle running-in helps stabilize internal structure and extend overall service life.
Advantages
∗ 2 R&D centers
∗ 2 modern factories - Hangzhou YJB Precision. and Zhejiang Ruiyang Bearing
∗ digital MES and SPC management systems
∗ IATF16949:2016, ISO9001:2015 and ISO14001 certifications
∗ High-end equipment and high-quality material
About HXB
1. Hangzhou Factory - YJB
Founded in June 2007, YJB is located in Hangzhou. As a subsidiary of HXB Group, we are a national high-tech enterprise and provincial science & technology enterprise specializing in R&D and manufacturing of high-precision, high-speed, advanced, special and professional bearings.
2. Huzhou Factory
In 2021, the deep groove ball bearing factory relocated from Hangzhou to Huzhou. It operate in a 10,000㎡ production facility with a team of 75 employees, focused on the R&D, and manufacturing of high-performance deep groove ball bearings.
Certificates
Exhibition
Shipping & Package
To guarantee intact product condition during cross-border transportation and storage, we implement differentiated standardized packaging solutions for different bearing types. For conventional deep groove ball bearings in regular specifications, we adopt industrial-grade plastic barrel inner packaging for effective dustproof, moistureproof and anti-collision protection, then place the sealed plastic barrels into sturdy corrugated cartons for outer reinforcement. For high-precision bearings with strict precision requirements, each single bearing is individually packaged in a customized rigid paper box first to avoid precision loss caused by friction, extrusion and vibration. All cartoned bearing products will be systematically sorted and securely stacked on standard export pallets, with professional binding and reinforcement treatment. This standardized palletized shipping method prevents extrusion, scattering and damage in long-distance international logistics, ensuring complete and undamaged delivery of goods to customers worldwide.
FAQ
Q1: Which is better for motorcycles, 2RS seal or ZZ seal?
Considering the outdoor working environment with mud, water and dust, 2RS double rubber sealed deep groove ball bearings are the preferred choice. They provide excellent waterproof, dustproof and anti-sediment performance, ideal for wheel hubs and exposed engine transmission parts with longer service life. ZZ double metal shield bearings only resist dust but not water, so they are only suitable for dry and enclosed internal engine environments and not recommended for wheel hub installation.
Q2: Is C3 clearance necessary for motorcycle bearings?
C3 increased clearance bearings are highly recommended. Motorcycle bearings generate continuous heat during driving and braking, causing thermal expansion. The C3 clearance reserves sufficient expansion space to avoid bearing overheating, jamming, increased friction and premature wear. Standard clearance bearings are prone to overheating, abnormal noise and stalling under long-term high-speed operation, failing to adapt to motorcycle dynamic working conditions.
Q3: What causes premature failure of motorcycle deep groove ball bearings?
The main causes of early bearing damage in motorcycles are summarized as follows: First, poor sealing protection; water, mud and road dust invade the bearing interior, resulting in grease deterioration, rust and abrasive wear. Second, improper installation, such as violent knocking and uneven force during pressing, which causes internal steel ball and raceway deformation. Third, lack of regular lubrication or use of inferior grease, leading to increased friction and dry wear. Fourth, long-term overloading, violent vibration and high-speed driving, which exceed the bearing's rated load and accelerate fatigue loss. In addition, using standard clearance bearings instead of C3 clearance bearings for long-term high-speed operation will also cause premature failure.
Q4: What is your return policy?
A: Within the valid warranty period, if the product fails to meet the stipulated quality standards or cannot work normally due to inherent manufacturing quality problems (excluding human damage and improper use), the product shall be covered by free warranty service.
Q5: Do you offer wholesale discounts for bulk orders?
A: We provide competitive wholesale prices for bulk purchases. Please email us your order quantity for a custom quotation.
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