Product Description:

The MST450E-0006-FT-N0CN-NNNN is a frameless direct-drive motor manufactured by Bosch Rexroth Indramat and belongs to the MST Synchronous Torque Motors series. In production cells, it mounts directly to a load and produces high continuous torque at very low shaft speeds, eliminating mechanical reducers. This arrangement improves positioning accuracy and lowers maintenance demands, so the unit is suited for rotary tables, plastics-extrusion screws, and other heavy-duty axes in industrial automation where steady rotation and responsive control are critical.

Under continuous duty, the motor supplies 1400.0 Nm while turning at 60 rpm; this operating point is reached with a phase current of 32.0 A when the internal liquid circuit is active. Multiplying speed and torque yields a mechanical output of 8.80 kW, which is the constant power available to the driven machine element. A torque constant of 43.80 Nm/A links commanded current from the inverter to resulting torque, allowing predictable force generation in closed-loop control. The 3.2 Ω phase resistance moderates heating at low speeds, and 30 mH of winding inductance filters switching harmonics from the drive electronics to maintain smooth current waveforms.

For short overload periods, the windings tolerate 88.0 A, enabling a peak shaft output of 3250.0 Nm before thermal limits intervene. During the same interval, the rotor may reach 120 rpm, expanding the dynamic range for accelerating large inertial loads. Effective heat extraction is handled by an aluminum cooling jacket, and the liquid circuit must sustain 9.6 L/min of flow while remaining below 3.0 bar inlet pressure to keep coil temperature stable. Power conductors exit through the larger-diameter stator end for easier routing, and the motor is delivered without an encoder so users can install resolver, incremental, or absolute feedback hardware that matches their motion controller.