ServoClass Couplings from Zero-Max are suited for the precision positioning requirements and high-reverse-load characteristics of ac and dc servomotor applications. They provide high torsional stiffness for precision positioning and have zero backlash and low hysteresis, which ensure repeatable precise positioning. The couplings are used for applications including automation, packaging, semiconductor assembly, and systems using ball screws and servomotors. Three sizes are added to the line; they handle bore diameters from 0.875 to 1.378 in and operating torque from 3937 to 9843 lb·in. Additional sizes are available starting with the smallest bore size of 0.157 in.