Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Brand Name	Harbin (HRB)
Bearing Type	Deep Groove Ball Bearing
Model Series	6300 Series (6306-6311)
Seal Configuration	ZZ (Metal) or 2RS (Rubber)
Ring Material	GCr15 Chrome Steel
Precision Grade	P0 (ABEC-1)
Internal Clearance	C0 (Standard)
Cage Material	Steel Stamped
Lubrication	Pre-greased
Country of Origin	China

5 reviews

Anonymous

Apr 15, 2026

Rating: 5/5

HRB Quality

Always trust HRB for industrial use. These bearings have a long lifespan compared to generic brands. Will order again.

Anonymous

Mar 27, 2026

Rating: 4/5

Good but packaging could be better

Bearings are genuine and work well, but the outer shipping box was slightly dented upon arrival. The product inside was safe though.

Anonymous

Mar 12, 2026

Rating: 4/5

Solid performance

Using in a high vibration environment for a pump motor. Holding up well after three months of continuous operation.

Anonymous

Feb 15, 2026

Rating: 5/5

Excellent for machinery

Replaced old bearings in my lathe with the 6308 model. Very smooth operation and no noise. Genuine HRB quality is evident.

Anonymous

Feb 07, 2026

Rating: 5/5

Fast shipping

Needed 6308 ZZ urgently for a repair job. Arrived on time and works great. No vibration issues.

5 FAQ

Q: Do you offer bulk discounts for orders over 50 units?

A: Yes, please contact our sales department directly through the store page for volume pricing options.

Q: What is the maximum RPM for the 6309 bearing?

A: Max speed depends on load and lubrication, but the reference speed is approximately 7000 rpm for grease lubrication.

Q: What is the inner diameter of the 6310 model?

A: The 6310 bearing has an inner diameter of 50mm, an outer diameter of 110mm, and a width of 27mm.

Q: Are these bearings pre-lubricated with grease?

A: Yes, all units come pre-greased with standard industrial lubricant suitable for most general applications.

Q: How can I verify these are genuine HRB products?

A: Genuine HRB bearings feature laser-etched branding on the ring and come in official packaging with a security hologram.

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