Product Description:

The MHD115C-059-NP0-AA is a servo motor manufactured by Bosch Rexroth Indramat as part of the MHD Synchronous Motors series. The unit belongs to the 115 frame class and carries the C length code, giving a mid-length option within this family. It is used on machining centers, packaging stations, and transfer lines where controlled rotary motion is required for repeatable axis movement. Driven by an electronic inverter, the motor converts electrical power into regulated torque and speed, forming the mechanical element of a closed-loop axis in industrial automation systems.

Key mechanical dimensions influence how the motor mates to machinery. The centering shoulder is 180 mm, and the square flange measures 192 mm, allowing rigid mounting to heavy machine castings without additional adapters. While stationary under rated current, the rotor can deliver 70.0 Nm of continuous torque, making it suitable for medium-to-high inertia loads that demand steady force during prolonged operation. Feedback to the controller is provided by a digital servo feedback (HSF) encoder, which returns high-resolution incremental data for velocity and position loops. Heat generated in the stator is removed through natural convection, so the installation must provide sufficient airflow instead of relying on forced-air or liquid cooling.

For electrical integration, the three-phase power leads exit through an output connector on side A, which helps simplify cable routing inside a cabinet or machine enclosure. The winding code 059 gives the matching drive the nominal voltage and current parameters needed for proper operation. The motor uses a keyed shaft for straightforward mechanical coupling, and a shaft seal helps block lubricant ingress at the bearing journal. Position feedback is relative, so the axis must be homed after each power cycle before precise positioning begins. The motor ships without a holding brake, which reduces weight and inertia but requires load retention through external means or drive torque.