Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Brand	HRB (Harbin)
Model Series	6305, 6306, 6307, 6308, 6309
Bearing Type	Deep Groove Ball Bearing
Material	Chrome Steel (GCr15)
Precision Grade	P5 (ABEC 5)
Seal Type	2Z (Metal) / 2RZ (Rubber)
Cage Material	Steel Stamped Cage
Lubrication	Pre-lubricated with Grease
Country of Origin	China
Warranty	1 Year Manufacturer Warranty

5 reviews

Anonymous

Apr 06, 2026

Rating: 4/5

Good fit but slow shipping

Dimensions matched perfectly with my machinery. Only issue was the delivery took longer than expected.

Anonymous

Mar 17, 2026

Rating: 5/5

Reliable for industrial use

Bought the 6308-2Z for conveyor belts. No issues so far after three months of continuous operation.

Anonymous

Feb 18, 2026

Rating: 4/5

Solid bearing

Good value for the price. Slightly tighter fit than expected but seated properly after installation.

Anonymous

Jan 31, 2026

Rating: 5/5

Excellent value

Arrived well packaged. Authentic product with clear laser markings on the ring. Will buy again.

Anonymous

Jan 28, 2026

Rating: 5/5

Genuine HRB Quality

Used these for a motor repair project. They run smooth and quiet. The packaging confirmed authenticity.

5 FAQ

Q: What is the exact inner diameter for the 6305 model?

A: The 6305 model has an inner diameter of 25mm, outer diameter of 62mm, and width of 17mm.

Q: Are these bearings pre-lubricated?

A: Yes, all bearings come pre-lubricated with standard grease suitable for general industrial applications.

Q: How can I verify the authenticity of the product?

A: Check the laser marking on the ring and the hologram on the packaging box for verification codes.

Q: What is the difference between 2Z and 2RZ seals?

A: 2Z indicates metal shields on both sides, while 2RZ indicates non-contact rubber seals on both sides.

Q: Can these handle high-speed applications?

A: P5 precision supports moderate high speeds. Please refer to the specific RPM limit chart for the selected model.

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