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Home / Bearings & Bushings / RYS Stainless Steel Bearing 6306 6307 6308 6309 6310 6311 ZZ 440 304 Material
Bearings & Bushings

Attributes

Brand -
Category Industrial Small Parts / Bearings & Bushings
Origin -
Material Grade 440C & 304 Stainless Steel
Seal Type ZZ (Metal Shield)
Bearing Type Deep Groove Ball Bearing
Precision Rating ABEC-1 (ISO Class 6)
Cage Material Stamped Steel
Lubrication Pre-greased (Standard)
Manufacturing Origin Harbin, China
Corrosion Resistance High (Acid/Alkali Resistant)
Temperature Range -20°C to +120°C
Warranty Period 6 Months Limited

5 reviews

A

Anonymous

Apr 16, 2026

Rating: 4/5

Good value

Solid bearings for the price. Grease seems adequate for general use.

A

Anonymous

Mar 28, 2026

Rating: 5/5

Resistant to chemicals

Using in a food processing environment. Easy to clean and no corrosion.

A

Anonymous

Mar 18, 2026

Rating: 5/5

Fast shipping

Arrived well packaged. No damage to the shields during transit.

A

Anonymous

Feb 20, 2026

Rating: 5/5

Exact dimensions

Measured the 6308 with calipers. Spot on. Fits my motor perfectly.

A

Anonymous

Feb 02, 2026

Rating: 5/5

Perfect for marine equipment

Used these on a pump shaft exposed to saltwater. No rust after 3 months.

5 FAQ

Q: What is the difference between 304 and 440 steel?

A: 440 offers higher hardness, while 304 provides better corrosion resistance in harsh chemicals.

Q: Can I regrease these bearings?

A: Since these are ZZ shielded, they are not designed for regreasing. They are sealed for life.

Q: Do you offer bulk discounts?

A: Yes, please contact our sales team for orders exceeding 50 units.

Q: What is the warranty period?

A: We offer a 6-month warranty against manufacturing defects under normal use.

Q: Are these suitable for high-speed applications?

A: They are designed for standard industrial speeds. For high RPM, please consult our high-speed series.

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