Product Description:

The MST530C-0014-FH-N0KR-NNNN torque motor is produced by Bosch Rexroth Indramat and belongs to the MST Synchronous Torque Motors series. This frameless, low-speed, high-torque unit is intended for direct-drive rotary tables, extrusion screws, and other automation axes that benefit from eliminating gear reductions. By supplying controlled electromagnetic torque directly to the load shaft, the motor simplifies mechanical layouts and improves positioning accuracy inside industrial machinery.

At its continuous operating point, the motor delivers 1200 Nm of shaft torque at an electrical speed of 125 rpm, translating into a mechanical output of 15.70 kW while drawing a phase current of 35.8 A. The 33.52 Nm/A torque constant indicates how torque scales with drive current, and the 1.486 V/rpm voltage constant corresponds to the back EMF seen by the inverter. Forced liquid cooling is required; a flow of 5.4 l/min must enter the stator jacket at up to 6.0 bar to remove the 4.80 kW of loss heat generated during steady load. The winding loop presents 1.187 Ω of resistance and 8.3 min of thermal time lag, allowing moderate duty-cycle changes without exceeding thermal limits.

Beyond the rated point, the drive system must handle peak and stall conditions. At zero speed, the motor can supply 1440 Nm while the inverter must sustain a standstill current of 43.0 A; this holding capability is used for indexing or pressing tasks. Dynamic acceleration is limited by the 14.1 mH phase inductance, which filters current rise and works with field-oriented control algorithms. Short bursts may draw up to 100.0 A to overcome inertia, and the rotor can safely reach an electrical velocity of 175 rpm for process events such as rapid positioning.