Product Description:

The MHD112B-058-NG0-AN servo motor is manufactured by Bosch Rexroth Indramat and is part of the MHD Synchronous Motors series. It is used in industrial automation to supply regulated rotary motion, allowing machine tools, material-handling axes, and packaging equipment to index, accelerate, and decelerate with repeatable accuracy. As a synchronous servo motor, it works with a matched drive to convert controlled current into precise shaft movement. This supports closed-loop positioning and stable speed control in applications that require repeatable motion over frequent start-stop cycles.

The unit produces a continuous standstill torque of 28.0 Nm, so it can hold or slowly move loads without overheating during long dwell periods. A flange that measures 192 mm forms the mounting interface and matches common mechanical layouts in large frames. Internal circulation passages enable liquid cooling, which removes heat at the stator and permits higher rms current than naturally cooled housings of comparable size. Rotor position is reported through digital servo feedback (HSF), giving the drive controller precise electrical angle information. Precision alignment to the driven machine is supported by a centering pilot of 130 mm, which helps keep radial runout low when the flange bolts are tightened.

The motor has a plain shaft, so torque is transferred through clamping couplings rather than through a keyed connection. Winding designation 058 identifies the electrical winding set used with matching Rexroth drives. Position is tracked on a relative basis, so a homing routine is required after each power-up to establish the reference position. Electrical power enters through a connector on side A, which can simplify cable routing when the motor is installed with the flange facing the load. A shaft seal restricts oil ingress at the journal, and the motor is supplied without a holding brake, so load retention during power-off conditions must be provided by the machine or by drive-controlled torque.