Product Description:

Bosch Rexroth Indramat manufactures the MST360E-0018-FT-N0CN-D303 as part of its MST Synchronous Torque Motors series. The unit is a liquid-cooled torque motor stator designed for direct attachment to large machine shafts. By generating high continuous torque at very low speed, it removes mechanical gear stages and provides precise motion control for rotary tables, extruders, or print rollers. Its frameless format allows the motor to be integrated inside the machine housing, reducing envelope size and inertia. The thermal design supports continuous operation in demanding duty cycles where the motor would otherwise overheat.

During nominal operation, the stator produces 875 Nm of torque at a rated shaft speed of 180 rpm. This combination delivers 16.50 kW of mechanical power and is achieved with a phase current of 42.0 A. A torque constant of 20.80 Nm/A links drive current directly to torque generation, simplifying controller tuning for steady-state loads. Liquid cooling channels run through the laminated core so the 1.3 Ω winding resistance and 21 mH inductance stay within design temperatures under continuous current. Supply cables can be terminated with AWG 8 conductors, and the specified 10 mm² cross-section keeps voltage drop low. The stator weighs 40.3 kg, which helps stabilize thermal excursions.

Transient demands are handled with a peak capability of 1900 Nm, supported up to a shaft speed ceiling of 300 rpm. The drive can accept a surge current of 141 A without exceeding allowed hot-spot limits, giving headroom for acceleration or disturbance rejection. With 25 pole pairs, the motor’s electrical frequency remains modest, which reduces switching losses and permits standard inverter hardware even at maximum speed. Thermal encapsulation fills voids between the windings and the housing, improving heat transfer to the coolant and protecting the copper from vibration. The encapsulated structure also stiffens the assembly against mechanical shock.