Product Description:

The MHP115C-024-HP0-BFNNNN is a liquid-cooled synchronous servo motor produced by Bosch Rexroth Indramat for the MHP Synchronous Motors series. This unit is installed in machining centers, presses, and material-handling axes where precise electrical torque replaces hydraulic or pneumatic actuation. Its liquid-cooled housing supports high torque density in enclosed machines where fan-based cooling is less practical. The shaft couples directly to driven loads through a keyed connection, while an integrated optical encoder returns incremental position data to the drive for high-resolution motion control. Because the feedback device is built into the motor, the connected drive can monitor rotor movement without a separate external measuring assembly.

The motor develops a continuous stall torque of 133.0 Nm when coolant flow and ambient conditions remain within the permitted range. Under those same conditions, the windings draw a continuous stall current of 60.0 A, indicating the thermal load that must be supported by the cooling circuit. For rated operation, the stator is designed for a nominal torque of 119.4 Nm at a phase current of 53.9 A and a DC bus equivalent of 256 V. This operating point supports steady loaded motion during normal process operation. Rotor position is reported through an optical encoder that provides 2048 lines per revolution, allowing the drive controller to interpolate fine position data for smooth vector control. Torque is transmitted through a 38 mm shaft with a 10 × 8 × 70 mm key, which helps prevent rotational slip between the motor and the load.

Dynamic events are handled by a peak current capability of 142.2 A, enabling acceleration to the motor’s maximum torque of 231.0 Nm without demagnetization. At rated speed, these limits translate to a mechanical output of 18.8 kW, which is suitable for heavily loaded servo axes that require both force and speed. Rotor inertia of 0.0138 kgm² balances responsiveness with load stability during repeated speed changes. The liquid jacket must maintain a minimum coolant flow of 1.8 l/min, and the cooling loop is limited to a system pressure of 3.0 bar to preserve seal integrity.