... axis robot arm, Industrial robotic arm, single arm robot, beam type robotic arm, linear modular unit, electric cylinder.1. ... use the ball screw, synchronous belt or pinion and rack drive type of robot arm. b.Y axis: can ... use the ball screw, synchronous belt or pinion and rack drive type of robot arm.c.Z axis: ... can be use the ball screw, pinion and rack drive type of robot arm.3. The selection and ...