Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Brand | HRB (Harbin) |
| Model Series | 6300 Series (6306-6310) |
| Bearing Type | Deep Groove Ball Bearing |
| Material | Chrome Steel (GCr15) |
| Seal Options | 2Z, 2RZ, Z, RS |
| Precision Grade | P0 (ABEC-1) |
| Internal Clearance | C3 (Standard) |
| Cage Material | Steel Stamped |
| Lubrication | Pre-lubricated with Grease |
| Country of Origin | China |
Anonymous
Apr 14, 2026
Rating: 4/5
Standard specifications
Dimensions match ISO standards exactly. No issues with installation. Would prefer if grease type was specified on the box.
Anonymous
Mar 16, 2026
Rating: 4/5
Good value for industrial use
Works well for general machinery applications. One unit had a slight noise initially but smoothed out after running. Good price point.
Anonymous
Mar 02, 2026
Rating: 5/5
Reliable for heavy duty
Using these 6310 bearings on a conveyor system. They handle the load well and the seals keep contaminants out effectively.
Anonymous
Feb 25, 2026
Rating: 5/5
Genuine HRB quality
Ordered the 6308-2RS for a motor repair. Fits perfectly on the shaft and housing. Rotation is smooth and packaging indicated authentic HRB branding.
Anonymous
Jan 27, 2026
Rating: 5/5
Fast shipping and authentic
Needed these urgently for a production line downtime. Arrived quickly and were clearly genuine HRB products with proper labeling.
Q: Are these bearings pre-lubricated or do I need to add grease?
A: Yes, these bearings come pre-lubricated with standard industrial grease suitable for most applications.
Q: Do you offer bulk discounts for orders over 50 units?
A: Yes, we offer tiered pricing for bulk orders. Please contact our sales team directly for a quote on quantities over 50.
Q: Is the bore size standard for the 6300 series?
A: Yes, all bearings follow ISO standard dimensions for the 6300 series. Please check the specific model number for exact bore, OD, and width.
Q: What is the difference between 2Z and 2RS seals?
A: 2Z indicates metal shields on both sides, while 2RS indicates rubber contact seals on both sides. 2RS offers better protection against dust and moisture.
Q: Can these handle high RPM applications?
A: They are suitable for standard motor speeds. For very high RPM applications, please consult the load and speed charts for the specific model number.
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