Product Description:

Bosch Rexroth Indramat builds the MHD112B-058-PG0-LN as a servo motor in the MHD Synchronous Motors series. The unit is intended for closed-loop axis control in machine tools, packaging lines, and material-handling cells where accurate positioning and speed control are required. A 130 mm centering diameter aligns the housing on the mounting pilot, and the square flange matches common gearhead and machine frame patterns. The motor uses a plain shaft, so torque is transferred through external clamping elements rather than a keyway. Digital servo feedback with an integrated optical encoder supplies absolute position data to the drive controller, allowing repeatable moves without homing. Because the motor is shipped without a holding brake, position must be maintained by drive torque or an external clamp when power is removed.

The electromagnetic section delivers 28.0 Nm of continuous standstill torque. Heat is removed by liquid cooling, which carries thermal energy away from the frame and helps keep the winding within the F insulation class limit during operation. The housing has an IP65 rating that blocks dust ingress and resists low-pressure water jets, so the motor can be installed near coolant spray. Its square mounting face measures 192 mm, and the left-side power connector can simplify cable routing in tight cabinets. Shaft sealing helps keep fluid away from the bearings, and storage is permitted from -20 to +80 °C.

Motion accuracy relies on the optical measurement method, which achieves system deviation within ±0.5 angular minutes. The feedback system provides absolute multi-turn feedback of more than 4096 revolutions, so position remains available after power cycles and restart events. Winding code 058 sets the electrical characteristics expected by compatible drives. The motor operates in ambient temperatures from 0 to 40 °C, and installation is permitted up to 1000 m above mean sea level without derating. The optical encoder also supports stable commutation and closed-loop positioning during repeated indexing cycles.