Product Description:

The MHD112C-058-PG3-AN is a servo motor built by Bosch Rexroth Indramat for the MHD Synchronous Motors series. It serves positioning and speed-controlled axes in automated equipment where stable torque and repeatable motion are required. The motor combines a size 112 stator with length code C windings so higher continuous torque is available without increasing the mounting bolt circle. Power leads exit on side A through an output connector, which keeps cable routing predictable in compact machine layouts and leaves the connection point accessible during installation.

A centering pilot of 130 mm and a flange square of 192 mm support repeatable alignment on gearboxes or adapter plates. This mounting layout helps the motor seat accurately against the mating surface and keeps shaft positioning consistent. The housing is sealed to IP65, and the shaft seal helps keep dust and water jets away from internal parts. Internal passages support liquid cooling, which keeps winding temperatures within Class F limits when ambient air is within 0 to 40 °C. The unit may be stored from −20 °C to 80 °C and mounted up to 1000 m above mean sea level without derating. Winding code 058 indicates the electrical resistance and inductance used by matching drive modules, and an optical measuring system provides continuous position data.

At standstill, the motor provides a continuous torque of 38.0 Nm, allowing the axis to hold heavy process loads without motion. A built-in holding brake provides 70.0 Nm of power-off restraint and is controlled by the drive. Position feedback comes from a digital servo encoder with system accuracy of ± 0.5 angular minutes and absolute feedback of more than 4096 revolutions, so the motor can retain position information after shutdowns. The motor also uses a plain shaft for direct coupling to the driven mechanism, which suits applications that rely on a simple shaft interface.