Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Brand Name | Harbin (HRB) |
| Bearing Type | Deep Groove Ball Bearing |
| Model Series | 6300 Series (6306-6311) |
| Seal Configuration | ZZ (Metal) or 2RS (Rubber) |
| Ring Material | GCr15 Chrome Steel |
| Precision Grade | P0 (ABEC-1) |
| Internal Clearance | C0 (Standard) |
| Cage Material | Steel Stamped |
| Lubrication | Pre-greased |
| Country of Origin | China |
Anonymous
Apr 15, 2026
Rating: 5/5
HRB Quality
Always trust HRB for industrial use. These bearings have a long lifespan compared to generic brands. Will order again.
Anonymous
Mar 27, 2026
Rating: 4/5
Good but packaging could be better
Bearings are genuine and work well, but the outer shipping box was slightly dented upon arrival. The product inside was safe though.
Anonymous
Mar 12, 2026
Rating: 4/5
Solid performance
Using in a high vibration environment for a pump motor. Holding up well after three months of continuous operation.
Anonymous
Feb 15, 2026
Rating: 5/5
Excellent for machinery
Replaced old bearings in my lathe with the 6308 model. Very smooth operation and no noise. Genuine HRB quality is evident.
Anonymous
Feb 07, 2026
Rating: 5/5
Fast shipping
Needed 6308 ZZ urgently for a repair job. Arrived on time and works great. No vibration issues.
Q: Do you offer bulk discounts for orders over 50 units?
A: Yes, please contact our sales department directly through the store page for volume pricing options.
Q: What is the maximum RPM for the 6309 bearing?
A: Max speed depends on load and lubrication, but the reference speed is approximately 7000 rpm for grease lubrication.
Q: What is the inner diameter of the 6310 model?
A: The 6310 bearing has an inner diameter of 50mm, an outer diameter of 110mm, and a width of 27mm.
Q: Are these bearings pre-lubricated with grease?
A: Yes, all units come pre-greased with standard industrial lubricant suitable for most general applications.
Q: How can I verify these are genuine HRB products?
A: Genuine HRB bearings feature laser-etched branding on the ring and come in official packaging with a security hologram.
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