... * Anti-backlash nut device. NOSEN R&D,production & sales a new Europe-type RNF-Series Cubic Gearboxes Mechanical Actuators, small ... is of self-locking. The self-locking function depends on a variety of parameters: Large pitches, Different gear ratios, Lubrication, ... DevicesSingle screw jack application, isn’t guided and without any guide rails, lifting screw does not do linear motions, only rotation, ...