CHUANGNENG Linear Rail SBR20 800mm 2PCS Linear Guide Rails Fully Supported Linear Rail Shaft Rod with 4PCS SBR20UU Block Bearing for Automated Machines DIY CNC Routers Lathes Mills

SpecificationsModel No.:SBR20-800Product Name:Linear Shaft RailColor:silverLength: 800mmDiameter: 20mmmaterial:aluminumPackage Including2 X SBR20-800mm Linear rail4 X SBR20UU Motion Router Solide Block BearingStainless steel Linear optical axis guide bearings linear movement.With corrosion-resistant, high strength, wear resistance and so on.Easy to install, no need to maintenance.Suitable for installation on all kinds of machinery; such as: engraving machine, woodworking machinery, printing machinery, machinery, etc.This is the sliding unit with the aluminium case, shafts and aluminium rail for preventing deflexion. This is the complete sliding unit systems and can be clamped simply tightening by bolt with high accuracy. The support rail unit provides maximum rigidity and stiffness to the shaft throughout the whole stroke, and ensure the performance of the unit.The shaft is case hardened. If you use normal steel shafts, the bearings will cut them up in no time. So make sure what you buy is case hardened!