Manufacturer of clutches, brakes, torque limiters, and tension control products.Nexen: Home             ROLLER PINION SYSTEM -- THE LINEAR DRIVE ALTERNATIVE Nexen offers an advanced technology that revolutionizes linear motion. The Roller Pinion System (RPS) provides zero backlash, very high positional accuracy, unlimited length, very high speeds, 99% efficiency, high rigidity, low noise, low maintenance, corrosion resistance, and long life. This opens up new design possibilities and provides the capability to achieve much higher levels of performance in machine designs