Product Description:

The MST210R-0010-FT-N0CN-T302 is a frameless synchronous torque motor stator produced by Bosch Rexroth Indramat within the MST Synchronous Torque Motors series. Torque motors supply high continuous torque at low speed, enabling direct-drive rotary tables, indexing heads, and other precision axes without gearing. In an automation cell, this stator integrates into the machine frame so its electromagnetic field couples directly to a matched rotor, delivering smooth, cog-free motion for positioning and contouring tasks.

At its rated operating point, the stator produces 105 Nm while turning at 180 rpm under the specified cooling conditions. Achieving that torque requires 6.5 A per phase, which helps determine drive sizing. The motor constant of 16.15 Nm/A shows the available torque per ampere. Control response is influenced by the phase inductance of 80 mH, which limits current rise. A 21 Ω winding resistance contributes to copper loss, while thermo-encapsulation and three thermo-switches protect the insulation. Liquid cooling at 3.0 L/min through the axial port on the large outer-diameter end removes heat, and the stator is supplied without an encoder for external feedback.

For intermittent peaks, the motor can develop 240 Nm up to 300 rpm, so applications can use this margin for rapid indexing before returning to nominal duty. Such bursts draw as much as 22.0 A, so the inverter must deliver that current while maintaining the 3 bar inlet pressure needed for coolant circulation. The encapsulated winding supports these loads, and the thermal protection circuit interrupts operation if temperature limits are exceeded. With a mass of 8.8 kg, the stator stores thermal energy yet remains light enough for mounting on rotary tables or direct-drive spindles where low reflected inertia is important.