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Home / Bearings & Bushings / Imported Open-Type Linear Ball Sliding Bearing LM10 12 13 16 20 25 30 40 50UUOP

Attributes

Brand -
Category Industrial Small Parts / Bearings & Bushings
Origin -
Model Series LM UUOP Series
Bearing Type Recirculating Ball Bushing
Configuration Open Type (Adjustable)
Material GCr15 Bearing Steel
Shaft Compatibility Hardened Linear Shaft
Surface Finish Black Oxide Coated
Cage Type Steel Retainer
Lubrication Pre-filled with Grease
Application CNC, 3D Printer, Automation
Origin Imported

5 reviews

A

Anonymous

Apr 08, 2026

Rating: 5/5

Great value

Bought the LM20 size. Fit is precise and matches standard shafts perfectly. Good price point for imported quality.

A

Anonymous

Apr 06, 2026

Rating: 5/5

Reliable imported quality

Consistent quality across multiple orders. We use these for light automation tasks and they hold up well.

A

Anonymous

Mar 10, 2026

Rating: 4/5

Good but tight

Needed some break-in time before it slid freely. Now works well. Just be aware it might be stiff out of the box.

A

Anonymous

Feb 17, 2026

Rating: 5/5

Perfect for 3D Printer

Replaced old bearings with these on my coreXY printer. Much quieter and smoother layers now.

A

Anonymous

Feb 16, 2026

Rating: 5/5

Smooth operation for CNC

Works perfectly on my X-axis. Very smooth movement with minimal friction. Highly recommended for hobbyist CNC builds.

5 FAQ

Q: Can I use this on a soft aluminum rod?

A: No, using on soft materials like aluminum will cause rapid wear. Please use hardened steel shafts.

Q: Do I need to add more grease upon arrival?

A: The unit comes pre-greased. You should maintain lubrication based on your specific usage frequency.

Q: What is the difference between UU and UUOP?

A: UUOP indicates an Open Type design, which allows for side mounting and adjustment on supported shafts.

Q: Is the size exact to metric standards?

A: Yes, these bearings follow standard ISO metric dimensions for LM series linear bushings.

Q: What shaft hardness is required for these bearings?

A: We recommend a shaft hardness of HRC50 or higher for optimal bearing life and performance.

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