Product Description:

The MST530L-0007-FH-NNKR-NNNN torque motor is produced by Bosch Rexroth Indramat and belongs to the MST Synchronous Torque Motors series. It is a liquid-cooled stator assembly with a cooling jacket integrated into the housing, designed to be flange-mounted around a large-diameter shaft. In low-speed, high-torque applications such as film stretching lines or rotary forging presses, the motor couples directly to the load, eliminating gearboxes and providing smooth, positionable drive power for automated machinery.

At its continuous operating point, the motor delivers 46.20 kW of mechanical output while holding a rated shaft speed of 70 rpm. This low speed is achieved with 35 pole pairs, allowing precise electronic commutation without mechanical reduction. The rated torque is 6,300 Nm, generated with a steady phase current of 133.0 A rms. For transient moves, the stator can accept up to 420.0 A and produce a peak torque of 13,800 Nm, giving ample headroom for acceleration or disturbance rejection. Power conductors of 2 × 25 mm² are routed through the terminal box on the right-hand side, and liquid coolant circulating through the jacket removes losses so thermal limits are not reached during sustained duty.

The motor has a torque constant of 47.40 Nm/A, so every ampere commanded by the drive contributes predictable rotary force. The phase windings have an inductance of 4.9 mH and a resistance of 0.52 Ω at 20 °C, figures that shape current rise times and copper losses during closed-loop control. A back-EMF constant of 3.000 V/rpm supports straightforward velocity estimation for sensorless monitoring. The stator with housing weighs 280 kg, and the encapsulated cooling jacket maintains temperature uniformity across this mass. With the electrical exits fixed to the right, piping and cabling can be routed consistently across multi-motor stations.