Product Description:

The MHP112B-058-HP1-ANNNNN is a three-phase permanent-magnet synchronous motor produced by Bosch Rexroth Indramat within the MHP Synchronous Motors series. As a drive element for industrial automation, it converts electrical energy from a servo amplifier into controlled rotary motion for positioning tasks on machine tools, packaging equipment, and handling axes. An integrated incremental encoder supplies 2048 increments of feedback so the control loop can track speed and position during operation. The motor also uses a keyed shaft with a sealing ring, which provides positive torque transmission while helping protect the interior from fluid ingress.

In continuous duty, the motor operates at a characteristic speed of 4000 rpm. Under a 60 K temperature rise, it delivers a nominal torque of 10.8 Nm while drawing 11.0 A from the controller at a phase-to-phase voltage of 214 V. This operating point corresponds to a shaft output of 3.4 kW, giving the motor useful power for dynamic servo applications. For short acceleration bursts, the electromagnetic system can reach a peak torque of 102.0 Nm. Continuous standstill torque is 28 to 31 Nm when heat is removed only through the housing surface. The motor uses winding code 058, natural convection cooling, and a size 112 frame with length class B.

Passive cooling through the aluminum casing is paired with IP65 protection, helping the motor resist dust and water jets in industrial service. The insulation system conforms to class F limits, and the thermal time constant is 90 min, so temperature rises slowly during long cycles. Stator characteristics include a winding inductance of 2.2 mH and a phase resistance of 0.17 Ω, which are relevant for current-loop tuning. A factory-installed holding brake supplies 22 Nm to secure loads when power is off, and the power connector faces side A. Operation is approved at ambient temperatures from 0 °C to 40 °C.