Product Description:

The MHD115B-058-NG0-BA is a three-phase servo motor produced by Bosch Rexroth Indramat for the MHD Synchronous Motors series. Designed for closed-loop industrial automation, it couples directly to machinery to deliver commanded speed and torque under drive control. Its winding code 058, motor size 115, and length code B identify the electromagnetic package used for medium-to-high inertia axes.

The drive end uses a 192 mm flange that mates to mounting faces, while the centering pilot keeps the motor aligned with the machine interface. Protection level IP65 seals the stator housing against dust and water jets so the motor can be installed directly on machine frames. Heat generated in the windings is removed by natural convection, eliminating the need for external blowers. Motion feedback is supplied by a Digital servo feedback (HSF) encoder that uses an optical measurement method and reports relative position to the controller. During continuous stall conditions, the rotor can generate 50.0 Nm of torque, allowing the motor to hold load under drive control at low or zero speed. The power cable exits on side B through an output connector, which helps keep wiring clear of moving parts.

A 180 mm centering diameter aligns the motor concentrically to the machine plate and helps minimize runout. Operation is permitted from 0 to 40 °C, while storage between −20 and +80 °C helps protect the class F insulation system. A fitted shaft seal protects the plain steel shaft against coolant ingress and supports the enclosure rating. Position repeatability is held within ±0.5 angular minutes, which helps maintain consistent placement in repeated motion cycles. The design omits a holding brake, so static parking torque must be provided externally if required. Installation is permitted up to 1000 m above mean sea level, and the relative position signal supports the drive’s closed-loop commutation routines. All terminals are routed through the side-B connector for streamlined cabinet wiring.