Hangzhou Huaxing Kechuang Holding Group Co., Ltd. is one of the leading manufacturers and suppliers of motorcycle wheel bearings 6203-2rs 6204-2rs 6205-2rs 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 Bearings 6203-2RS, 6204-2RS, 6205-2RS
Specifications
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Bearing Number: |
Deep groove ball bearings |
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Materials : |
Chrome steel GCr15(CHINA), SAE52100(USA), SUJ2(JAPAN) |
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|
Cover: |
Rubber seals |
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|
Cage: |
Pressed Steel |
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|
Grease or Oil: |
Normal grease |
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Radial Clearance: |
C0/C3/C4 |
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Vibration & Noise: |
ZV1, ZV2, ZV3, ZV4 |
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Accuracy: |
Standard Precision P0, P6, P5 |
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Brand or OEM: |
HXB or OEM brand |
Technical parameters
Bearing Radial Clearance by Bore Diameter (Unit: μm)
|
Bore Diameter (mm) |
C2 Group |
Standard Group |
C3 Group |
C4 Group |
C5 Group |
||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
Over |
Under |
Min |
Max |
Min |
Max |
Min |
Max |
Min |
Max |
Min |
Max |
|
2.5 |
6 |
0 |
7 |
2 |
13 |
8 |
23 |
14 |
29 |
20 |
37 |
|
6 |
10 |
0 |
7 |
2 |
13 |
8 |
23 |
14 |
29 |
20 |
37 |
|
10 |
18 |
0 |
9 |
3 |
18 |
11 |
25 |
18 |
33 |
25 |
45 |
|
18 |
24 |
0 |
10 |
5 |
20 |
13 |
28 |
20 |
36 |
28 |
48 |
|
24 |
30 |
1 |
11 |
5 |
20 |
13 |
28 |
23 |
41 |
30 |
53 |
|
30 |
40 |
1 |
11 |
6 |
20 |
15 |
33 |
28 |
46 |
40 |
64 |
|
40 |
50 |
1 |
11 |
6 |
23 |
18 |
36 |
30 |
51 |
45 |
73 |
|
50 |
65 |
1 |
15 |
8 |
28 |
13 |
43 |
38 |
61 |
55 |
90 |
|
65 |
80 |
1 |
15 |
10 |
30 |
25 |
51 |
46 |
71 |
65 |
105 |
|
80 |
100 |
1 |
18 |
12 |
36 |
30 |
58 |
53 |
84 |
75 |
120 |
Clearance Group Definitions
C2 (Group 2): Tighter than standard clearance, suitable for precision applications with low vibration requirements
Standard Group (CN): Normal radial clearance, the most commonly used specification for general motorcycle wheel bearings
C3 (Group 3): Larger than standard clearance, suitable for high-temperature operating environments and interference fit installations
C4 (Group 4): Extra-large clearance, for heavy-load and high-temperature working conditions
C5 (Group 5): Maximum clearance grade, for extreme heavy-load and high-differential-temperature applications
Chemical Composition of High Carbon Chromium Bearing Steel (For Bearing Rings & Rolling Balls)
|
Standard No. |
Steel Grade |
C (wt%) |
Si (wt%) |
Mn (wt%) |
S (wt%) |
P (wt%) |
Cr (wt%) |
Mo (wt%) |
|
GB/T18254 |
GCr15 |
0.95–1.05 |
0.15–0.35 |
0.25–0.45 |
≤0.025 |
≤0.025 |
1.40–1.65 |
- |
|
JIS G4805 |
SUJ2 |
0.95–1.10 |
0.15–0.35 |
≤0.50 |
≤0.025 |
≤0.025 |
1.30–1.60 |
≤0.080 |
|
ASTM A295 |
52100 |
0.98–1.10 |
0.15–0.35 |
0.25–0.45 |
≤0.025 |
≤0.025 |
1.30–1.60 |
≤0.100 |
Bearing composituon
1. Inner Ring
2. Outer Ring
3. Steel Balls (Rolling Elements)
4. Retainer (Cage)
5. Seals (2RS Rubber Seals / ZZ Metal Shields)
6. Internal Lubricating Grease
Motorcycle Bearings Performance
1. Excellent High-Speed Stability & Low Vibration Performance
Premium wheel bearings adopt precise tolerance control and optimized raceway & steel ball matching design. They deliver ultra-low rotational torque, uniform and smooth rotation, effectively eliminating wheel jitter and eccentric friction during high-speed riding. Stable mechanical operation ensures consistent handling and driving comfort under long-duration high-speed conditions.
2. Superior Dynamic Load Capacity & Fatigue Resistance
Qualified high-performance bearings possess high structural rigidity and outstanding dynamic load resistance. They can steadily withstand continuous radial loads and intermittent axial impact loads generated by motorcycle acceleration, braking, turning and bumpy road impacts. With excellent anti-fatigue properties, they resist long-term vibration wear and structural deformation, greatly extending service life for medium-displacement 125cc/150cc high-load models.
3. Professional C3 Clearance High-Temperature Adaptability
Equipped with standard C3 increased internal clearance, high-end wheel bearings reserve sufficient thermal expansion space. They effectively compensate for heat accumulation and thermal deformation during continuous high-speed operation, preventing bearing overheating, jamming and locking failure. This feature guarantees stable operation under high-temperature working conditions that standard-clearance bearings cannot adapt to.
4. Full Weather Sealing & Environmental Durability
Adopting 2RS double rubber sealing structure, high-quality wheel bearings achieve full isolation against external pollutants. They deliver excellent waterproof, dustproof, anti-mud and anti-corrosion performance, effectively preventing rainwater, road sediment and dust from invading the internal structure. The tight sealing avoids grease deterioration, internal rust and abrasive wear, ensuring reliable performance in muddy, dusty and wet road environments.
5. Long-Lasting Lubrication & Low Noise Operation
Premium bearings are filled with high-temperature resistant, long-life special bearing grease. The stable lubrication system maintains low-friction operation under long-term high-speed friction and high-temperature conditions, avoiding dry grinding, abnormal buzzing noise and early lubrication failure. They achieve quiet, smooth and noise-free riding throughout the service cycle.
6. Standardized Structural Compatibility & Safety Stability
Manufactured with strict industry dimensional standards, high-performance 6-series deep groove ball bearings feature high interchangeability for mainstream 100cc, 125cc and 150cc civilian motorcycles. With stable structural integrity, they effectively suppress wheel play and eccentric wear after long-term use, maintaining reliable driving stability and fundamentally ensuring riding safety.
HXB Introduction
Founded in 1995, HXB Bearing Manufacturer has focused on the track of precision mechanical spindle bearings for over 30 years. It has built two R&D innovation platforms and two production bases: Hangzhou YJB Precision Branch and Huzhou Ruiyang Bearing, alongside six wholly-owned subsidiaries. Digital MES and SPC control systems have been deployed in workshops, and all international standardized system certifications have been passed. It produces 3 million sets of high-precision spindle bearings annually for overseas export, supplies supporting bearings for Siemens and John Deere, and supports customized production based on drawings and samples.
Advantages
HXB was founded in 1995, with nearly 30 years of dedicated development, HXB now operates6 subsidiaries.
∗ 2 R&D centers
∗ 2 factories - Hangzhou YJB and Zhejiang Ruiyang Bearing
∗ Supported by advanced digital MES and SPC management systems
∗ IATF16949:2016, ISO9001:2015 and ISO14001 certifications
Certificates
Exhibition
FAQ
Q1: Where are deep groove ball bearings used on motorcycles? How to distinguish them from other types of bearings?
Motorcycle bearings are applied in different positions according to their structures and working conditions. As the most widely used type of motorcycle bearing, deep groove ball bearings are suitable for high-speed and medium-low load scenarios. They are mainly installed in the engine internal transmission system, front and rear wheel hubs, and general gear shafts.
Classification rules for motorcycle bearings: Plane ball bearings are specially used for front forks; needle roller bearings are applied to crankshaft connecting rods and some heavy-load transmission gear shafts; most other general rotating parts adopt deep groove ball bearings, which are the mainstream replacement bearings for motorcycle maintenance.
Q2: What are the core advantages of motorcycle deep groove ball bearings?
Deep groove ball bearings feature a simple structure, excellent high-speed performance, low friction resistance and low operating noise. They can bear both radial loads and a small amount of axial loads, perfectly adapting to the high-speed rotation of wheels and continuous operation of engine transmission systems. With optional sealing types and a complete range of models, they are compatible with most civilian motorcycle models.
Q3: What are the common deep groove ball bearing models for motorcycles under 100cc?
Small-displacement motorcycles under 100cc have a simple structure and low load, with highly universal and fixed bearing models:
1. Common front wheel models: 6200, 6201, 6300, 6301;
2. Common rear wheel model: 6301 (standard configuration for 100cc scooters and underbone motorcycles).
Q4: What are the common deep groove ball bearing models for mainstream 125cc and 150cc motorcycles?
125cc and 150cc are mainstream motorcycle displacements with moderate working loads and a wide range of applicable bearing models for front and rear wheels:
1. Core front wheel model: 6301;
2. Common models for rear wheels and engine transmission parts: 6202, 6302, 6200, 6201, 6203, 6204, 6205, 6206, 6300, 6301, 6302, 6000, 6001, 6002, 6003, 6004;
3. Special non-standard models: 62/22, 62/28, 62/32, 63/22, 63/28, 63/32, mostly used for old-style motorcycles, customized transmission shafts, widened wheel hubs and other special parts.
Q5: Are bearings interchangeable between different motorcycle models of the same displacement?
Most wheel hub bearings for civilian 100cc, 125cc and 150cc motorcycles are cross-brand interchangeable. The compatibility is determined by three core dimensions (inner diameter, outer diameter and thickness) rather than motorcycle brands. 6-series deep groove ball bearings with identical dimensions fit most wheel and transmission parts of same-displacement motorcycles. Only some imported and retro modified motorcycles adopt exclusive non-standard bearings that require separate dimension verification.
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