Linear Bearing, Plastic Linear Bearing, Plastic Bearing manufacturer / supplier in China, offering CNC Engraving Machine 3D Printer Aluminum and Plastic Polymer Linear Motion Bearing Units Slide Block SBR25uu, Hard Chrome Linear Rod 8mm Length 300mm 320mm 380mm 400mm 500mm for 3D Printer Y Axis, CNC Router Solid Polymer SBR12uu 12mm Open Block Linear Sliding Bearing and so on.