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Home / Bearings & Bushings / National Standard Pure Brass Full Copper Powder Metallurgy Oil-Impregnated Bearing Copper Sleeve, Inner Diameters M3, 4, 5, 6, 8-60mm

Attributes

Brand -
Category Industrial Small Parts / Bearings & Bushings
Origin -
Material Composition CuSn8ZnPb Powdered Bronze
Bearing Type Self-Lubricating Sleeve Bushing
Inner Diameter Range M3 mm to M60 mm
Outer Diameter Tolerance H7 Standard
Inner Diameter Tolerance F7 Standard
Lubrication Method Oil-Impregnated (SAE 30)
Manufacturing Standard GB/T 18325.1
Hardness Range 20 - 35 HB
Max PV Value 1.75 N/mm²·m/s
Operating Temperature -10°C to 80°C

5 reviews

A

Anonymous

Apr 07, 2026

Rating: 5/5

Self Lubricating Works

Installed on a fan assembly. No maintenance needed so far.

A

Anonymous

Mar 18, 2026

Rating: 5/5

Bulk Order Success

Ordered various sizes. All met tolerance specs. Will buy again.

A

Anonymous

Mar 17, 2026

Rating: 4/5

Good Value

Quality is good but shipping took a day longer than expected. Product itself is fine.

A

Anonymous

Feb 21, 2026

Rating: 5/5

Excellent Fit

Used these for a motor mount repair. The oil impregnation works perfectly.

A

Anonymous

Feb 13, 2026

Rating: 5/5

Great for Automation

Smooth motion on our linear guides. No squeaking after weeks of use.

5 FAQ

Q: What is the warranty period?

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

Q: Is the oil food grade?

A: Standard industrial oil is used. For food grade, please contact us for specific SKUs.

Q: Do you sell matching shafts?

A: We specialize in bushings. Please check our store for compatible shafts.

Q: Can I press fit these?

A: Yes, they are designed for press fit installation into a housing.

Q: Can these handle water exposure?

A: They are oil-impregnated; prolonged water exposure may wash out lubricant.

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