iYueMps 2 Pack 3D Printer Guide Rail Sets, 2pcs 8mm x 300mm Linear Shaft Optical Axis, 4 Pcs SK8 Aluminum Horizontal Bracket, 4Pcs SCS8UU Bearings Ball Bearing Slide

This linear motion shaft of 8 mm in diameter and in different Length is steel plated and case hardened, and is suItable for use with linear support blocks and closed Type slide units in linear motion applications. It made of high quality bearing steel, the linear rod are durable and sturdy，the surface is quite smooth, resistant to rust and corrosion Linear Motion Shaft:Diameter: 8mm;Length: 100mm/200mm/300mm/350mm/400mm/500mm/550mm/600mm;Material: Stainless Steel;Hardness: Surface hardness-55-60HRC ;Hardened layer-0.8mm;Surface treatment: Chrome Plated,Smoothness Ra0.8 Horizontal Shaft Holder:Material: Aluminum Alloy;Compatible Model: SHF 8A;Shaft Diameter: 8mm;Locking Bolt: M4 Clamping Bolt: M5;Dimensions: 43*10*5mm (W*L*T);Weight: 17g Linear Slide:Material: Bearing steel;Slide Bush Method: LM8UU;Dynamic Basic Loading: 274CN;Static Basic Loading： 392CON;Dimensions: 34*30*22mm (W*L*F) ;Weight: 52g The applications are extensive,such as measuring systems, printing equipment, and computer numerical control (CNC) tools,3D printer..etc, especially in bearing purpose.