Product Description:

The MHP112B-058-HP1-BNNNNN synchronous motor is produced by Bosch Rexroth Indramat for the MHP Synchronous Motors series. It functions as a drive element in industrial automation, converting drive current into rotary motion and transmitting commanded torque through a keyed shaft with a sealing ring. Feedback supports stable speed and position control, while the sealed shaft area helps limit lubricant loss and contaminant entry. This layout suits packaging machines, indexing tables, and other axes that need steady torque and repeatable positioning in a compact motor body.

At a base mechanical speed of 3000 rpm, the motor supplies 28.0 to 31.0 Nm of continuous standstill torque when cooled by natural convection, and it provides 28.0 Nm at the 60 K temperature rise point. That combination supports strong low-speed performance before the motor transitions into its higher-speed range. Its rated thermal output is 3.4 kW, supporting load across the 0 to 4000 rpm operating band. Current demand rises with load, and the stator can draw a peak of 128.3 A while the copper circuit shows 0.17 Ω resistance for winding code 058. A torque constant of 1.14 Nm/A gives the drive a predictable current-to-torque relationship. During short overloads, the shaft can deliver as much as 102.0 Nm, and the incremental encoder sends position and speed data back to the controller for closed-loop motion. This feedback allows the drive to correct speed changes caused by varying machine load.

The motor operates in ambient temperatures from 0 to +40 °C and carries an IP65 enclosure for protection against dust and low-pressure water exposure. An integrated brake provides 22.0 Nm of holding torque when power is removed, and the rotor can reach 4500 rpm during duty peaks. The brake is intended to hold the axis at rest rather than to stop the load dynamically under full motion. Frame size 112 with length code B sets the housing envelope, and insulation class F allows winding temperatures up to 155 °C. Power and feedback connectors exit on side B, which can simplify cable routing when the connection side must face away from nearby machine components.