Product Description:

The MST210A-0027-FT-N0CN-D301 torque motor is made by Bosch Rexroth Indramat within the MST Synchronous Torque Motors series. It is intended for stationary mounting inside industrial machinery, where direct-drive operation removes the need for mechanical reduction stages and helps reduce backlash in rotary axes. This layout is useful in machines that need smooth motion at low speed, because torque is produced directly at the driven element rather than through belts or gear sets. By producing high torque at very low speed, the motor suits rotary tables, extruders, and similar automation tasks that require precise positioning and stable output through slow, controlled motion.

Its continuous operating point includes a rated torque of 50.0 Nm at a rated speed of 270 rpm, which corresponds to a rated power of 1.40 kW at the shaft. Under dynamic loading, the winding can be energized up to a maximum current of 25.0 A, and the coil produces 7.10 Nm/A as its torque constant. The rotor can reach a maximum speed of 600 rpm, which sets the upper speed limit for the axis. Temperature is controlled by liquid cooling, and a coolant flow of 6.0 l/min helps keep the stator laminations within the allowable thermal range supported by the internal thermo-encapsulation. The housing comes without a cable gland, and the design also omits a motor encoder to keep the package compact.

A peak torque of 100.0 Nm is available for short acceleration demands before the motor returns to steady operation. The phase circuit has a winding resistance of 11 Ω and an inductance of 53.3 mH, while the average phase draw at nominal load is a rated current of 7.0 A. The stator weighs 7.2 kg, which helps keep handling manageable during installation. Liquid circulation inside the stator jacket keeps copper temperature stable during continuous duty, allowing the motor to support varying load conditions without additional forced-air cooling.