Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Model Series	LMK UU Series
Available Bore Sizes	6mm, 8mm, 10mm, 12mm, 13mm, 16mm, 20mm, 25mm, 30mm, 35mm, 40mm, 50mm, 60mm
Material Composition	GCr15 Bearing Steel
Seal Configuration	Double Rubber Seals (UU)
Motion Type	Linear Ball Recirculation
Precision Class	ISO Normal Class
Surface Hardness	HRC 60-64
Operating Temperature	-20°C to 120°C
Surface Treatment	Anti-Rust Coating
Typical Applications	CNC Machines, 3D Printers, Automation Equipment

5 reviews

Anonymous

Apr 17, 2026

Rating: 5/5

Excellent quality

I was worried about the quality at this price point, but they exceeded expectations. Using them on my 3D printer Z-axis.

Anonymous

Mar 31, 2026

Rating: 5/5

Durable and smooth

No noise during operation even under load. The flanged design makes mounting very easy.

Anonymous

Mar 20, 2026

Rating: 5/5

Perfect for my CNC build

These bearings fit perfectly on my 8mm shafts. The motion is smooth and there is no play. Great value for money.

Anonymous

Mar 14, 2026

Rating: 5/5

Fast shipping

Arrived quickly and well packaged. Exactly what I needed for my linear rail setup. Will buy again.

Anonymous

Feb 21, 2026

Rating: 4/5

Good bearings

One was slightly tight out of the box but loosened up after some use. Overall satisfied with the purchase.

5 FAQ

Q: Do you offer bulk discounts for large orders?

A: Yes, please contact us directly for pricing on orders over 50 units.

Q: Can I use these bearings in an outdoor environment?

A: They are sealed, but we recommend protecting them from direct moisture and dust for longevity.

Q: What shaft tolerance do you recommend for these bearings?

A: We recommend using shafts with h6 or g6 tolerance for the best fit and performance.

Q: What is the overall length of the LMK20UU model?

A: The length varies by bore size. Please refer to the detailed specification chart in the product description.

Q: Are these bearings pre-lubricated?

A: Yes, they come with standard grease applied from the factory.

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