Product Description:

The MST210C-0027-FT-N0SN-NNNN is a frame-mounted torque motor produced by Bosch Rexroth Indramat within the MST Synchronous Torque Motors series. It is intended for direct-drive rotary tables, extruders, and similar axes that need high continuous torque at low speed without mechanical gearing. The stator is protected by thermo-encapsulation, and the windings are connected through an axial connector on the smaller outside-diameter side to simplify cable routing in compact housings. The motor does not include an integrated encoder, so external feedback devices can be selected to match the required application accuracy. The active stator section weighs 11.5 kg, which supports integration on lightweight machine structures.

At its nominal operating point, the motor draws a continuous phase current of 13.0 A and delivers 3.40 kW at a shaft speed of 330 rpm with a torque of 120 Nm. Heat generated under these conditions is removed through liquid cooling, so the windings stay below thermal limits during extended high-load cycles. The liquid jacket helps stabilize conductor temperature and resistance, which keeps torque production predictable in closed-loop applications. This operating point is suitable for process drives that require steady low-speed rotation.

For short-term overloads, the inverter can deliver 50.0 A momentarily, allowing the motor to generate a peak torque of 250 Nm during acceleration or disturbance rejection. At standstill, the winding can hold 14.3 A, producing a holding torque of 132 Nm without motion. Under maximum excitation, the combined copper and iron losses result in a power dissipation of 2.60 kW that must be removed by the cooling circuit. The thermal time constant is 3.0 minutes, which limits temperature rise when step loads are applied. Coolant flow therefore has a direct effect on sustained operation under heavy demand.