Product Description:

The MST210D-0070-FT-N0SN-NNNN torque-motor stator is manufactured by Bosch Rexroth Indramat as part of the MST Synchronous Torque Motors series. It is intended for direct-drive rotary tables, printing cylinders, and similar automation axes where mechanical gearing can be eliminated. By embedding the stator into the machine frame, the system gains a short, stiff driveline that improves position accuracy while reducing backlash from intermediary transmission components. Because the rotor is mounted directly to the driven mechanism, response remains immediate and the control loop is not affected by gear elasticity.

Its electrical values describe how the stator behaves with the connected inverter. A rated synchronous speed of 700 rpm allows slow, high-torque motion without gear reduction. Phase conductors can accept up to 72 A, giving the drive adequate headroom for acceleration pulses. With a torque constant of 4.70 Nm/A, inverter current produces proportional torque at the driven axis. The coil set has a winding inductivity of 6.9 mH, which limits current rise and affects switching behavior, while the copper winding resistance of 1.4 Ω contributes to winding losses during continuous load. Power terminals accept conductors up to 6.0 mm², which keeps the connection suitable for the current level without requiring oversized wiring.

A stator mass of 13.8 kg provides useful thermal capacity during intermittent overloads while remaining practical for installation. Unobstructed cooling air should pass across the laminated core to remove heat generated in the windings during operation. The laminated core helps spread heat through the stator body during extended low-speed operation, which is important in applications that dwell under load. This stator is suited to precision equipment that needs stable torque delivery, low vibration, and repeatable rotary positioning over long duty cycles.