Main parts:Aluminum housing + LM .UU linear ball bearings
Main application:working with linear rails.
The universal Ball Bearings is great for you to replace the damaged Ball Bearings in your devices to improve them efficiency and save energy. Widely used in home appliances, industrial, low noise and high speed electric motors, construction machinery, automotive components, pumps, and machinery. Smooth moving, low friction, high rigidity and long life. Economical, easy to maintain replace.

Specifications:

• Model: SC8UU
  
• Shaft ID: 8mm
• Inner Diameter: 8mm
  
• Main application:working with linear rails
• Material : Steel, Aluminum
• Size : Approx. 34 x 30 x 22cm / 1.34 x 1.18 x 0.87"
•  Inner Diameter : Approx. 8mm / 0.31"