... L1 turn 0.25 mm travel375 mm/minTolerance & BacklashTrapezoidal-type screw axial backlash 0.15 mm, radial backlash 0. ... an external guide rail.Self-locking FunctionRNF Series Trapezoidal type screw is of self-locking. The self-locking function ... base etc.Application Industries:Precision lift table, Roll forming machines, Press machines,Tunnel Freezer, Surface-Gringing machines, Satellite dish antenna, ...