Nexen Group (Vadnais Heights, MN) offers Eclipse Servo Motor Brakes that consume no energy when the brake is disengaged. It is spring-engaged/air-released (no electric coil) to keep the brake cool until it is needed. The brakes mount to the shaft end of servomotors up to 20 horsepower, including NEMA 23, 34, and 42 frame sizes. The brake’s square-shaped housing allows flexibility to make the mounting features match the motor dimensions. The brake’s output end duplicates the motor mounting features. The input end bore accepts the motor shaft and is fixed inside the brake with a split-hub/shaft collar arrangement.
Key features include failsafe power-off engagement, torque range of 2 to 125 Nm, zero backlash, integral flanges that adapt to any servomotor or AC motor and mounting style, high torsional rigidity, no system wind-up, and models configured to hold the machined end of a ball screw.
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