The Eclipse servo motor brake consumes no energy when the brake is disengaged. It is spring-engaged/air-released (no electric coil) to keep the brake cool until needed. It is designed to mount to the shaft end of servo motors up to 20 hp, including NEMA 23, 34 and 42 frame sizes. The brake’s square-shaped housing allows flexibility to custom-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. It can be used for intermittent dynamic stopping.