Appropriate for precision positioning requirements and high reverse load characteristics of challenging AC and DC servomotor applications, the ServoClass couplings from Zero-Max provide high torsional stiffness. They feature zero-backlash and low hysteresis for repeatable, accurate positioning. Applications include automation, packaging, semi-conductor assembly and any system using ball screws and servo motors.

Three sizes have been added to the Zero-Max ServoClass coupling line. They handle bore diameters from 0.875 inches (20 mm) to 1.378 inches (35 mm) and operating torque from 3.937 to 9.843 in/lbs (100 to 250 Nm). Other sizes are available starting with the smallest bore size (0.157 inches or 4 mm) and larger.

The ServoClass couplings are manufactured with RoHS compliant materials. They are lightweight and designed with 304 stainless steel disc packs and 7075-T6 aluminum hubs and center members. They are available in single and double flex models in inch and metric sizes. All models and sizes feature clamp style hubs with corrosion resistant socket head cap screws.

"Zero-Max ServoClass couplings provide a superior option compared to beam or bellow style couplings," says Robert Mainz, Zero-Max sales manager. "As the cycle becomes faster, they outperform beam couplings, which experience harmful windup. Zero-Max couplings also have a robust design, so they outperform the fragile design of bellows couplings."