Ball screws sold as an integral component of power-operated industrial machinery; Driving system for industrial equipment comprised of ball screws, supporting stages and motors, namely, drives and variable speed drives for machines comprised of ball screws, electric motors for machines and ball transfer table units; Linear guideway for precision machinery comprised of rolling elements moving synchronously, namely, Linear motions machines for moving objects, Roller bearings for machines, Roller conveyors, Roller chains being parts of machines, linear cutting guides that are parts of power operated industrial machinery; Linear motion guider for precision machinery, namely, Linear motions machines for moving objects, Roller bearings for machines, Roller conveyors, Roller chains being parts of machines, linear cutting guides that are parts of power operated industrial machinery; Industrial robots; Linear actuator system for precision machinery comprised of driving units and guiding stages, namely, Pneumatic linear actuators, Linear motions machines for moving objects; Linear motion stage for use with industrial equipment, namely, Pneumatic linear actuators, Linear motions machines for moving objects; Electro-mechanical and electro-hydraulic apparatus, namely, ball screws for transmitting rotary to linear motion sold as an integral part of power-operated industrial machinery; Linear bearing, namely, Linear roller bearings for machines, linear bearings and bushings that are parts of power operated industrial machinery