Product Description:

The MHD115A-058-PP0-BN is a servo motor in the MHD Synchronous Motors series from Bosch Rexroth Indramat. It provides controlled rotary motion for positioning axes, handling modules, and machining spindles in automated equipment. This motor type is commonly paired with a compatible servo drive for closed-loop speed and position control during repetitive machine cycles. The unit uses size 115 with length code A and a keyed shaft to transfer torque securely to couplings, pulleys, or gear inputs. It is supplied without a holding brake, so any load that must remain fixed when power is removed needs an external brake or another mechanical restraint.

Its continuous standstill torque is 32.0 Nm, which supports static loads and low-speed indexing with stable output. Thermal management uses liquid cooling, allowing heat to leave the housing efficiently when the motor is installed in enclosed machine spaces. Because cooling is handled by the liquid circuit, the motor depends less on cabinet airflow than a fan-cooled design. The enclosure is rated IP65, and the square mounting flange measures 192 mm for attachment to standard machine faces. Insulation class F supports winding temperatures up to 155 °C, and the optical digital servo feedback encoder supplies absolute position data to the drive. That feedback helps the controller track rotor position during motion and while the axis is stopped.

The motor operates in ambient temperatures from 0 to 40 °C and can be installed up to 1000 m above mean sea level without derating. A centering pilot of 180 mm helps align the stator housing accurately on the machine plate, which supports repeatable mounting. The internal system accuracy reaches ± 0.5 angular minutes, and the absolute feedback supports multiturn tracking over more than 4096 revolutions. This is useful on axes that must return to a known position after power cycling. Power leads exit on side B through a connector, and a shaft seal helps keep coolant and contamination away from the bearings.