Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Model Series	LMK UU
Bore Diameter	6mm / 8mm / 10mm / 12mm / 13mm / 16mm / 20mm
Flange Type	Square Flanged
Seal Type	Double Seal (UU)
Shaft Compatibility	Ground Hardened Shaft
Bearing Material	High Carbon Steel
Cage Material	Engineering Plastic
Mounting Holes	Counterbored for Screws
Pre-Lubricated	Yes
Typical Application	CNC, 3D Printer, Linear Rail

5 reviews

Anonymous

Apr 17, 2026

Rating: 4/5

Good quality but tight

Needs a little breaking in but otherwise solid construction.

Anonymous

Apr 12, 2026

Rating: 4/5

Solid construction

Heavy duty feel. Mounting holes aligned well with my base.

Anonymous

Mar 18, 2026

Rating: 5/5

Perfect for my CNC build

Smooth operation and fits the shaft perfectly. Very happy with the quality.

Anonymous

Mar 07, 2026

Rating: 5/5

Exactly what I needed

Fits 12mm shaft perfectly. No wobble at all.

Anonymous

Feb 19, 2026

Rating: 5/5

Great value

Fast shipping and well packaged. Works great on my linear rail.

5 FAQ

Q: Does this come pre-lubricated?

A: Yes, all bearings are pre-lubricated with standard grease.

Q: What size screws fit the mounting holes?

A: Screw size varies by bore diameter. Please check the specific dimension chart.

Q: What is the shaft tolerance requirement?

A: We recommend a shaft tolerance of g6 for optimal performance.

Q: Is a hardened shaft required?

A: Yes, for best lifespan, please use a hardened and ground shaft.

Q: Can this handle high-speed motion?

A: Yes, but we recommend staying under 2 meters per second for longevity.

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