The Kerk® RGS/RGW linear rail platform includes 180° folded-over motorized design, allowing for a small footprint linear acuator system ideal for precision motion applications. The unit contains all components needed for a complete motion subassembly, including the stepper motor, belt and pulley, precision lead screw, bearing supports and rail with load carriage. The standard drive rations available from the motor to the screw are 2:1, 1:1 and 1:2, using lightweight aluminum pulleys and a fiberglass reinforced neoprene timing belt. Screw leads available range from 0.05 in/rev to 1.2 in/rev.