Product Description:

The MHD090B-058-NP0-UN is a servo motor manufactured by Bosch Rexroth Indramat within the MHD Synchronous Motors series. Designed for positioning and speed control duties in industrial automation, the motor operates as part of a drive system where precise torque and feedback are required for packaging lines, gantry axes, and material-handling equipment. As a brushless synchronous design, it works with Indramat drives to convert electrical commands into controlled mechanical rotation across continuous duty cycles. This supports repeatable starts, stops, and speed changes on automated axes.

Mechanically, the unit seats on a 110 mm centering diameter and mates to a square flange of 140 mm, and both dimensions promote alignment with gearboxes or machine frames. It belongs to motor size 090 and length code B, a combination that sets the overall envelope and active stack height. The drive shaft uses a keyed shaft profile for torque-secure coupling, and a shaft seal limits the ingress of coolant or dust along the journal. Position data are provided through digital servo feedback (HSF), and the measurement is relative, so the drive must execute a reference move after power-up. Power and sensor conductors share combined connectors that are turnable within 270°, allowing cable exit to be adapted to cabinet or carrier layouts.

For thermal management, the stator uses liquid cooling to move heat away from the windings and maintain rated output in sealed enclosures. At standstill, the motor can deliver 12.0 Nm of continuous torque, and this value applies to winding code 058 under nominal coolant flow. This cooling method helps support steady operation where surrounding airflow is limited. The model is supplied without a holding brake, so external clamping devices are necessary when static load retention is required. The lack of an internal brake also reduces rotor inertia during motion.