Product Description:

The MST530B-0010-FH-N0KR-NNNN is a frameless, water-cooled torque motor produced by Bosch Rexroth Indramat within the MST Synchronous Torque Motors series. Designed for direct-drive rotary tables, printing cylinders, and other low-speed axes, the unit delivers high continuous torque without mechanical gear reduction. By mounting the stator and rotor directly into machine structures, it provides tight position control and eliminates backlash in industrial automation systems that require precise angular motion.

At its nominal operating point, the motor reaches a rated speed of 100 rpm while supplying a continuous torque of 800.0 Nm. These values correspond to a mechanical output of 8.40 kW. To sustain this load, the windings draw a rated current of 28.6 A, and their electromagnetic conversion efficiency is reflected in a torque constant of 28.00 Nm/A. A 1.4 Ω phase resistance limits I²R losses, and the 16.2 mH inductance shapes current ripple during inverter commutation. Thirty-five pole pairs allow the servo drive to regulate slow shaft speeds with fine electrical resolution. The power connection uses 4.0 mm² leads sized to handle the continuous current without excess heating.

For intermittent duty, the motor can deliver a peak torque of 1800.0 Nm and will accelerate safely up to a ceiling speed of 200 rpm. Under these conditions, the drive may momentarily demand a maximum phase current of 71.0 A. Liquid cooling stabilizes thermal drift, and a flow rate of 6.0 l/min across the stator jacket removes 3.70 kW of internal loss while staying below the 3.0 bar inlet pressure limit. The assembled motor with its protective housing weighs 68.0 kg, so machine frames must support that static load. Heat rejected to the coolant helps prevent buildup inside the enclosure and preserves insulation life during long production cycles.