Product Description:

The MST530C-0010-FH-NNKR-NNNN torque motor is produced by Bosch Rexroth Indramat for the MST Synchronous Torque Motors series. This frameless, permanent-magnet unit is intended for direct coupling to high-inertia machine shafts where slow, precise rotation is required in industrial automation equipment. By delivering high torque without mechanical transmission elements, the motor targets indexing tables, winders, and extrusion drives that benefit from smooth, backlash-free motion. Its frameless format also allows the motor to be integrated directly into the driven axis, which helps reduce compliance and supports accurate low-speed control.

At its continuous operating point, the motor delivers a rated torque of 1200 Nm while drawing a rated phase current of 31.2 A. This operating point yields a mechanical output of 12.60 kW at the electrical speed limit of 140 min⁻¹. The peak capability rises to a maximum torque of 2700 Nm, supported by a torque constant of 38.50 Nm/A that links generated torque to stator current. Electrical behavior also depends on a winding resistance of 2.0 Ω at 20 °C and a winding inductance of 24.6 mH, which affect drive voltage demand and current ripple. Leakage capacitance is listed as 15.2 nF for electromagnetic compatibility planning.

For axis sizing during transient or stalled conditions, the motor supplies a standstill torque of 1440 Nm with a corresponding standstill current of 37.4 A. Short-duration overloads can be accommodated because the winding can accept a maximum phase current of 88.0 A before thermal limits are reached. Continuous heat generated under dynamic loading is quantified by a power dissipation of 4.30 kW, so the installation must remove that heat through liquid or conductive cooling surfaces. The back-EMF characteristic is given by a voltage constant of 2.810 V/min⁻¹, which helps determine DC-bus requirements for the drive. Installation wiring uses a 6.0 mm² power lead to keep conductor losses within acceptable limits.