Product Description:

The MST530C-0014-FH-NNKR-NNNN is a frameless synchronous torque motor segment produced by Bosch Rexroth Indramat as part of the MST Synchronous Torque Motors series. When integrated into a machine housing, the segment delivers direct-drive rotary motion for indexing tables, extruders, and similar equipment that benefits from high continuous torque at low speed. Eliminating gearboxes allows torque to pass directly to the load with minimal compliance between the motor and the driven axis, which improves position accuracy and reduces mechanical wear in automated production cells.

The motor’s nominal operating point uses a rated speed of 125 rpm and a rated torque of 1200.0 Nm, resulting in 15.70 kW of mechanical output while drawing a rated current of 35.8 A. At this operating point, the torque constant of 33.52 Nm/A means each ampere of phase current produces a predictable amount of shaft torque for current-controlled drive tuning. Back electromotive force is characterized by a voltage constant of 1.486 V/rpm, which helps size the DC bus voltage in the inverter so commanded speeds can be reached without saturation. Dynamic response is influenced by the stator winding inductance of 14.1 mH, which limits current ripple and shapes the bandwidth of the current loop while the motor remains within its maximum electrical speed of 175 rpm.

A thermal time constant of 8.3 min describes how quickly the winding temperature follows load changes, and the liquid jacket requires 5.4 L/min of coolant to remove heat during operation. Under peak transient conditions, the winding can dissipate 4.80 kW while carrying up to 100.0 A of phase current. Resistive losses are limited by a phase resistance of 1.187 Ohm at 20 °C, which helps keep electrical heating predictable as current rises. In stall conditions, the motor can hold 1440 Nm with a standstill current of 43.0 A, and pressure in the cooling circuit should not exceed 6.0 bar to maintain coolant flow integrity.