... unit with the aluminium case, shafts and aluminium rail for preventing deflexion. This is the complete sliding ... simply tightening by bolt with high accuracy. Support Rail Unit provides maximum rigidity and stiffness to the shaft ... unit. We can provide the SBR/TBR Linear Rail Supports with diameter from 16 to 50,Max. ... , SBR20UU, SBR25UU, SBR30UU, SBR35UU, SBR35UU, SBR40UU, SBR50UU Rail Linear Bearings