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 Shield) / 2RZ (Rubber Seal) |
| Material | Chrome Steel (GCr15) |
| Precision Grade | P0 (ABEC-1) |
| Cage Material | Steel Stamped |
| Lubrication | Pre-lubricated with Grease |
| Country of Origin | China |
| Warranty | 12 Months Manufacturer Warranty |
Anonymous
Apr 03, 2026
Rating: 4/5
Good but shipping slow
Product is fine and matches specifications. The 2RZ seals keep dust out effectively. Only giving 4 stars because shipping took a bit longer than expected.
Anonymous
Mar 15, 2026
Rating: 4/5
Standard size
Fits well into standard housing dimensions. Slight break-in period noticed but now running quietly. Good value for bulk purchases.
Anonymous
Feb 25, 2026
Rating: 5/5
Smooth rotation
Very quiet operation after installation. The grease inside seems high quality. No play or wobble detected. Highly recommend for industrial machinery.
Anonymous
Feb 21, 2026
Rating: 5/5
Authentic Product
Great bearings for the price. I used the 6903 ZZ model for a motor repair and it fits perfectly. Rotation is smooth and noise is minimal. Verified authentic packaging.
Anonymous
Jan 31, 2026
Rating: 5/5
Perfect for motors
Used on 6904 model for an electric fan motor. Very satisfied with the performance. HRB is a reliable brand and this official store delivers genuine items.
Q: Can these handle high temperatures?
A: Standard grease is rated up to 120°C. For higher temperatures, please contact support for high-temperature variants.
Q: Are these bearings pre-lubricated?
A: Yes, all HRB deep groove ball bearings come pre-lubricated with standard grease suitable for general industrial applications.
Q: What is the difference between ZZ and 2RZ seals?
A: ZZ refers to metal shields on both sides, offering less friction. 2RZ refers to rubber contact seals, providing better protection against dust and moisture.
Q: Is this sold as a pair or single unit?
A: The price listed is for a single bearing unit. Please adjust the quantity if you need a pair.
Q: What is the bore size for the 6902 model?
A: The 6902 model has a bore diameter of 15mm, an outer diameter of 28mm, and a width of 7mm.
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