Attributes

Brand	-
Category	Industrial Small Parts / Bearings & Bushings
Origin	-
Model Series	KCMF / KCMFL
Ball Material	Chrome Steel GCr15
Housing Material	Aluminum Alloy
Seal Type	Double Rubber Seals (UU)
Shaft Diameter Options	8mm, 10mm, 12mm, 16mm, 20mm, 25mm, 30mm, 35mm, 40mm, 50mm
Mounting Style	Circular Flange with Countersunk Holes
Precision Grade	G10 Precision
Dynamic Load Capacity	Varies by Shaft Diameter
Operating Temperature	-20°C to 100°C
Lubrication	Pre-lubricated with Standard Grease

5 reviews

Anonymous

Apr 02, 2026

Rating: 4/5

Great value

Shipping was fast, product works well. Slight resistance initially but broke in quickly after some cycles.

Anonymous

Mar 26, 2026

Rating: 5/5

Perfect for my 3D printer

Fit perfectly on the 8mm rods. Smooth motion right out of the box. Very happy with the quality for the price.

Anonymous

Mar 21, 2026

Rating: 5/5

Sturdy construction

Heavy duty feel. The aluminum housing is robust and the seals seem tight. Great for linear motion projects.

Anonymous

Mar 20, 2026

Rating: 4/5

Good quality bearing

Smooth motion but needed extra grease for my specific application. Otherwise solid construction and fast delivery.

Anonymous

Feb 17, 2026

Rating: 5/5

Exact replacement part

Used for CNC machine upgrade. The flange holes lined up perfectly with my existing mount. No modifications needed.

5 FAQ

Q: Do these come pre-lubricated?

A: Yes, all units are pre-lubricated with standard grease before shipping and are ready to install.

Q: Difference between KCMF and KCMFL?

A: The L indicates an extended length version which provides higher load capacity and stability.

Q: What shaft tolerance is recommended?

A: We recommend using shafts with h6 or g6 tolerance for optimal performance and longevity.

Q: Can I use these outdoors?

A: Standard seals are for indoor use. For outdoors, consider additional protection from dust and moisture.

Q: Is this suitable for high-speed applications?

A: These are designed for linear motion. Please consult the load chart for max speed based on size.

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