Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Brand | HRB (Harbin) |
| Model Series | 6902, 6903, 6904 |
| Bearing Type | Deep Groove Ball Bearing |
| Seal Type | ZZ (Metal) / 2RZ (Rubber) |
| Material | Chrome Steel (GCr15) |
| Precision Grade | P0 (ABEC-1) |
| Inner Diameter | 15mm - 20mm (Varies by Model) |
| Outer Diameter | 28mm - 37mm (Varies by Model) |
| Width | 7mm - 9mm (Varies by Model) |
| Country of Origin | China |
Anonymous
Apr 14, 2026
Rating: 4/5
Reliable Performance
Good value for money. The rubber seals on the 2RZ model provide good dust protection. Would buy again.
Anonymous
Feb 27, 2026
Rating: 5/5
Perfect Replacement
Replaced worn bearings in my power tool. The 6902-ZZ fits exactly as specified. Very satisfied with the purchase.
Anonymous
Feb 21, 2026
Rating: 5/5
Industrial Standard
We use these for our conveyor maintenance. Consistent quality from the official store. No noise during operation.
Anonymous
Feb 10, 2026
Rating: 5/5
Authentic HRB Quality
Received the 6903-2RZ bearings. Packaging was secure and the laser marking confirms authenticity. Smooth rotation right out of the box.
Anonymous
Feb 05, 2026
Rating: 4/5
Good for DIY Projects
Used these for a motor repair. They fit perfectly. Shipping took a bit longer than expected but the product is solid.
Q: Are these bearings pre-lubricated?
A: Yes, all HRB bearings come pre-lubricated with standard grease suitable for general industrial use.
Q: How can I verify the authenticity?
A: Please check the laser engraving on the ring and the holographic label on the packaging. You can also verify the code on our official website.
Q: Do you offer bulk discounts?
A: Yes, please contact our customer service team directly for pricing on bulk orders exceeding 50 units.
Q: Can these handle high RPM applications?
A: Yes, these deep groove ball bearings are designed for standard to high-speed rotations depending on the specific model and load.
Q: What is the difference between ZZ and 2RZ seals?
A: ZZ refers to metal shields suitable for high speeds, while 2RZ refers to rubber seals offering better protection against dust and moisture.
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