Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Material	Stainless Steel 304
Bearing Series	6300 Deep Groove Ball
Seal Configuration	ZZ (Metal Shielded)
Precision Rating	ABEC-1 / ISO Class 0
Cage Material	Steel
Lubrication	Pre-filled Lithium Grease
Corrosion Resistance	High (Suitable for Humid Environments)
Operating Temperature	-20°C to +120°C
Country of Origin	China
Package Quantity	1 Piece per Pack

5 reviews

Anonymous

Apr 20, 2026

Rating: 5/5

Perfect replacement

Fit my 6305 housing perfectly. Much better than the chrome steel ones I used before in this environment.

Anonymous

Apr 19, 2026

Rating: 4/5

Good value

Quality is solid though shipping was slow. The bearings themselves perform well under moderate load.

Anonymous

Mar 26, 2026

Rating: 5/5

Excellent corrosion resistance

Used these in a high humidity workshop and they show no signs of rust after several months. Smooth operation.

Anonymous

Mar 21, 2026

Rating: 5/5

Smooth rotation

Very quiet operation under load. I appreciate the metal shields keeping the grease in.

Anonymous

Feb 28, 2026

Rating: 5/5

Durable construction

No signs of rust after 3 months of use in a marine application. Highly recommend for wet areas.

5 FAQ

Q: Is additional greasing required?

A: They come pre-greased from the factory. You can add more later if needed through the shield gap carefully.

Q: What is the inner diameter of 6304?

A: The 6304 model has a 20mm bore inner diameter, 52mm outer diameter, and 15mm width.

Q: Is the 6306ZZ fully sealed?

A: It features metal shields on both sides, which protects against dust but is not waterproof for submersion.

Q: Do you offer bulk discounts?

A: Yes, please contact our support team directly for pricing on orders larger than 50 units.

Q: Can these handle high speeds?

A: They are suitable for moderate speeds typical of the 6300 series. For very high RPM, ceramic hybrids are recommended.

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