A
Anonymous
Apr 18, 2026
Rating: 4/5
Good Value
Works well for general machinery repair. Slightly tight at first but loosened up.
Description
HRB Harbin Bearing 683 684 685 686 687 688 689 ZZ Official Store
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Brand | HRB Harbin |
| Bearing Type | Deep Groove Ball Bearing |
| Model Series | 683, 684, 685, 686, 687, 688, 689 |
| Seal Type | ZZ (Double Metal Shield) |
| Material | GCr15 Chrome Steel |
| Precision Grade | P0 (ABEC-1) |
| Cage Material | Steel |
| Lubrication | Pre-greased |
| Origin | China |
| Warranty | 1 Year Manufacturer Warranty |
5 reviews
A
Anonymous
Mar 16, 2026
Rating: 5/5
Perfect for RC Motors
Used the 688 size for my drone upgrade. Very smooth rotation and quiet operation.
A
Anonymous
Feb 27, 2026
Rating: 5/5
Authentic HRB Quality
Verified the branding on the shield. Genuine product from the official store.
A
Anonymous
Feb 17, 2026
Rating: 5/5
Fast Shipping
Arrived well packaged. No damage to seals during transit.
A
Anonymous
Feb 06, 2026
Rating: 5/5
Smooth Operation
Low friction observed during testing. Will buy again for future projects.
5 FAQ
Q: Is this suitable for high-speed applications?
A: Yes, these are designed for high-speed rotation, but please check specific RPM limits for each size.
Q: What are the dimensions for the 688 model?
A: The 688 ZZ bearing dimensions are 8mm inner diameter, 16mm outer diameter, and 5mm width.
Q: Are these rust resistant?
A: They are made of chrome steel. Please keep them in a dry environment to prevent rust.
Q: Can I add more lubrication later?
A: Since these are ZZ shielded, you can add oil, but greasing is more difficult without removing shields.
Q: Do you offer bulk discounts?
A: Yes, please contact our sales team directly for orders exceeding 50 units.
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