A
Anonymous
Apr 15, 2026
Rating: 5/5
Bulk order satisfied
Purchased 50 units of 6305-ZZ. Consistent quality across all units. Will order again.
Description
Harbin Bearing Flagship Store Brand Direct Sales Authenticity Guaranteed
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Brand | HRB Harbin |
| Series | 6300 Series (6300-6305) |
| Material | Chrome Steel (GCr15) |
| Sealing Type | ZZ (Metal Shield) or 2RZ (Rubber Seal) |
| Precision Grade | ABEC-1 / P0 |
| Cage Material | Steel or Polyamide |
| Country of Origin | China |
| Load Capacity | Radial and Moderate Axial |
| Lubrication | Pre-lubricated with Grease |
| Warranty | 1 Year Manufacturer Warranty |
5 reviews
A
Anonymous
Apr 14, 2026
Rating: 4/5
Good quality, slow shipping
Bearings look genuine and well packaged. Shipping took longer than expected but product is solid.
A
Anonymous
Apr 08, 2026
Rating: 3/5
Packaging could be better
Bearings are fine but one box was slightly dented upon arrival. Product inside was okay though.
A
Anonymous
Apr 01, 2026
Rating: 5/5
Reliable HRB brand
Always trust HRB for standard applications. These 6301 bearings replaced worn ones in my drill press.
A
Anonymous
Mar 07, 2026
Rating: 5/5
Perfect fit for my motor
Ordered the 6302-2RZ for a conveyor belt motor replacement. Fit was exact and running smoothly after 2 months.
5 FAQ
Q: Do these come pre-lubricated?
A: Yes, all bearings in this series come pre-lubricated with standard grease suitable for general industrial use.
Q: What is the maximum RPM for the 6304?
A: Depending on lubrication and load, the limiting speed is approximately 17,000 RPM for open types, slightly less for sealed.
Q: Is the 2RZ seal suitable for dusty environments?
A: Yes, the 2RZ rubber seal offers better protection against dust and moisture compared to the ZZ metal shield.
Q: Can I mix different sizes in one order?
A: Absolutely, you can select different models from the 6300-6305 range in your cart before checkout.
Q: What are the dimensions for the 6303 model?
A: The 6303 bearing has an inner diameter of 17mm, outer diameter of 47mm, and width of 14mm.
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