Linear Motion Ball Bearing Bushing Sealed on Both Side Chromium Steel shell and bearing ball, good abrasion resistance, high precision and good strength Smooth moving, low friction, high rigidity and long working life Suitalbe for kinds of electronic equipment/guide bar, drive shaft, and pillar Product description 1.provides LMUU series Linear Ball Bearing with seals on both side to prevent ingress of dirt, water and foreign matter. 2.Linear Motion Bearing (also called Ball Bushing or Shaft Guiding) is a rolling friction supporting elements that usually used for linear motion mechanical parts with small friction. 3.Coordinate with Linear Motion Shaft, recirculating balls provide unlimited stroke at low friction movement, permit temperature within 80 degree Celsius. 4.It is great for 3D printer, CNC, and other applications. Specification: Bearing No.: LM25UU Ball Circuit: 6 Static Load Capacity (Cor): 1.57kN Dynamic Load Capacity (Cr): 0.98kN Colour:Silver Material:Chrome steel + nylon Size:Shaft diameter: 25mm Outer diameter: 40mm Length: 59mm Package Contents: 8 x Linear Ball Bearings Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.