Product Description:

The MST360B-0006-FT-N0CN-NNNN is a low-speed, high-torque permanent-magnet motor manufactured by Bosch Rexroth Indramat within the MST Synchronous Torque Motors series. Designed for direct-drive tables, rotary indexing axes, and similar automation stages, the unit produces high continuous torque at very low shaft speed, eliminating mechanical gearboxes and minimizing maintenance. In use, the motor couples directly to the load so the drive controller can position or regulate angular velocity through its internal feedback without relying on intermediate transmission components.

Under nominal loading, the motor delivers 375.0 Nm of shaft torque at 75 rpm, which corresponds to 2.90 kW of mechanical output. This operating point is reached when the drive applies 8.8 A RMS per phase to the stator windings, whose 20 °C resistance is 14.8 Ω. Because the electrical frequency remains low, the 105.9 mH phase inductance filters current ripple, and copper loss is balanced with the 2.70 kW of heat that must be transferred to the mounting surface. A voltage constant of 3.148 V/rpm sets the required DC link voltage, while the 25 pole-pair configuration keeps synchronous error small during slow, continuous rotation.

In dynamic duty, the motor can reach 800 Nm for brief acceleration periods and holds 440 Nm when locked against an external load. The drive may momentarily command 21.5 A to achieve this peak, whereas continuous stall torque is generated with 9.3 A. Electrical speed capability tops out at 150 rpm, a limit imposed by rotor geometry and magnetic flux density. Current-to-torque conversion remains linear with a sensitivity of 47.31 Nm/A, giving predictable response for closed-loop control. Thermal equilibrium is approached after the 5.0-minute time constant, so short overloads can be tolerated before the windings exceed their rated temperature.