Product Description:

The MHD112B-058-PG0-AN is a servo motor produced by Bosch Rexroth Indramat for the MHD Synchronous Motors series. It has motor size 112 and length code B, making it suitable for medium-duty positioning axes in automated machinery. The unit incorporates digital servo feedback with an integrated encoder that uses an optical measurement method, and it uses winding code 058 with compatible drives. A plain shaft is supplied, the power connector faces side A, and terminations are made through a single output connector. This version is delivered without a holding brake, so the load must be held by external devices or drive torque when needed.

At the mechanical interface, the motor has a centering diameter of 130 mm and a flange square of 192 mm, sizes that align with ISO mounting patterns. Its continuous torque at standstill is rated at 28.0 Nm, supporting holding force at zero speed. The winding uses liquid cooling, which removes heat from the stator and helps maintain an operating ambient range of 0 to 40 °C under high duty cycles. Enclosure sealing meets IP65, which keeps out dust and low-pressure water jets during cleaning. For elevated sites, the device can be installed up to 1000 m above mean sea level, and storage is permitted between -20 and +80 °C without affecting insulation.

The electromagnetic system uses Class F insulation, allowing winding temperatures up to 155 °C before thermal limits are reached. Position feedback is delivered with a system accuracy of ± 0.5 angular minutes, giving the controller fine resolution for coordinated motion. The encoder provides absolute feedback for more than 4096 revolutions, so the motor can retain multi-turn position information after power cycles. A shaft seal is fitted to protect internal bearings from coolant or lubricant spray, and the plain shaft geometry reduces backlash when coupled with rigid clamping hubs.