Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Brand Name | HRB (Harbin) |
| Model Series | 6900, 6901 |
| Bearing Type | Deep Groove Ball Bearing |
| Material Composition | GCr15 Bearing Steel |
| Seal Configuration | ZZ (Metal) or 2RZ (Rubber) |
| Inner Diameter | 10mm (6900), 12mm (6901) |
| Outer Diameter | 22mm (6900), 24mm (6901) |
| Bearing Width | 6mm |
| Precision Rating | P0 (ABEC-1) |
| Country of Origin | China |
Anonymous
Apr 21, 2026
Rating: 4/5
Good quality overall
Bearings work well. One out of the pack was slightly stiff initially but loosened up after use. Good value for the price.
Anonymous
Mar 27, 2026
Rating: 5/5
Authentic Product
I was worried about fakes but the laser marking is clear and the packaging was official. Very satisfied with this store.
Anonymous
Mar 22, 2026
Rating: 5/5
Industrial Standard
Running these in a small motor assembly for 2 months now. No noise or heat issues. Reliable performance.
Anonymous
Feb 26, 2026
Rating: 5/5
Fast Delivery
Shipping was quick and the bearings were well protected in bubble wrap. No damage during transit. Will buy again.
Anonymous
Jan 30, 2026
Rating: 5/5
Perfect fit for my project
Used these for a 3D printer upgrade. The dimensions are spot on and the rotation is very smooth. Genuine HRB quality as expected.
Q: What is the difference between ZZ and 2RZ seals?
A: ZZ indicates metal shields on both sides, suitable for high speed. 2RZ indicates rubber contact seals, better for dust and moisture protection.
Q: Are these bearings pre-lubricated?
A: Yes, all HRB bearings come factory lubricated with standard grease suitable for general industrial use.
Q: Can these handle high RPM applications?
A: They are suitable for standard to high speeds depending on the load. For extreme RPM, please consult our technical team for specific series.
Q: How can I verify the authenticity of these bearings?
A: Genuine HRB bearings feature clear laser etching on the ring and come in official branded packaging with a quality certificate.
Q: Do you offer a warranty on these items?
A: Yes, we provide a 12-month quality guarantee against manufacturing defects when purchased from this official store.
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