Product Description:

The MST360D-0012-FH-N0KR-NNNN is a direct-drive torque motor produced by Bosch Rexroth Indramat for the MST Synchronous Torque Motors series. This frameless unit mounts directly to the load so it can generate high torque at low rotational speed without belts or gearboxes. In industrial automation settings it functions as the prime mover for rotary positioning tables, winders, and indexing fixtures where precise angular control, high stiffness, and compact axial length are critical system requirements.

It is built for continuous duty at a rated torque of 525 Nm; together with the rated speed of 115 min⁻¹ this produces a mechanical output of 6.30 kW that suits steadily loaded process axes. When rapid indexing or start-up surges occur, the electromagnetic stack can supply up to 1150 Nm without thermal derating. Heat generated during these peaks is removed by Liquid Cooling; a coolant stream travels through a 0.39 l duct that forms a jacket inside the housing, an arrangement referenced as encapsulation with a cooling jacket in housing. The right-side terminal box simplifies cable entry and accepts three-phase supply leads with a 2.5 mm² power-wire cross-section, keeping conductor losses low during full-load operation.

From the drive controller’s perspective the windings draw a peak phase current of 39.8 A while transient torque is commanded, and stabilize at 15.7 A at the nominal operating point. The electromagnetic conversion is linear, with a torque constant of 33.33 Nm/A, allowing the control loop to predict load behavior from current feedback alone. Response time is influenced by a winding inductance of 46.2 mH and a cold resistance of 5.4 Ω, factors that shape current rise and copper losses. Back-EMF grows proportionally to speed, following a voltage constant of 2.043 V per min⁻¹, so the selected inverter must provide sufficient DC link voltage for the 39-pole stator.