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

Anonymous

Apr 15, 2026

Rating: 5/5

Bulk order satisfied

Purchased 50 units of 6305-ZZ. Consistent quality across all units. Will order again.

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.

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.

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.

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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