Product Description:

The MST450D-0012-FT-N0CN-NNNN is a frameless torque motor built by Bosch Rexroth Indramat within the MST Synchronous Torque Motors series. As a direct-drive stator and rotor set, it supplies high continuous torque at very low speed for indexing tables, print rollers, or rotary actuators that cannot accommodate gearboxes. Liquid cooling through an integral aluminum jacket removes heat directly from the windings, letting the motor sustain its rated workload in automated production cells where duty cycles are prolonged.

This model achieves a continuous output of 810.0 Nm at the nominal shaft speed of 120 min⁻¹, delivering 10.20 kW of mechanical power while drawing a steady phase current of 33.0 A. The torque constant of 24.50 Nm/A links drive current to produced torque, allowing the controller to predict load reaction accurately. At these ratings, the stator dissipates Joule losses through liquid passages that encircle the frame, and the cooling circuit keeps copper temperature below insulation limits so magnetic flux remains stable. Electrical conductors exit the stator end through a larger outside-diameter interface, and a 6.0 mm² power lead cross-section minimizes voltage drop between the inverter and motor terminals.

For short bursts, the motor can withstand 1800.0 Nm, accelerating heavy inertias without mechanical reduction. Transients are limited by the permissible peak speed of 250 min⁻¹ and a surge current ceiling of 100.0 A. Thirty pole pairs create high spatial resolution for position control while keeping fundamental electrical frequency low, easing filter design in the inverter. Dynamic response is influenced by a stator inductivity of 12.7 mH, which moderates current ripple, and by a winding resistance of 1.35 Ω at 20 °C, which contributes to copper losses during stall or low-speed operation.