Product Description:

The MST530G-0010-FS-N0CN-D303 is a frameless synchronous torque motor supplied by Bosch Rexroth Indramat within the MST Synchronous Torque Motors series. As a direct-drive component, it couples to the load without gearing and delivers high continuous torque for indexing tables, extruders, and similar low-speed automation axes. Its frameless layout allows the motor elements to be integrated directly into the machine structure, which helps create a compact rotary axis with reduced mechanical compliance.

Under continuous duty, the motor supplies 4200 Nm at a rated speed of 100 min⁻¹, producing a mechanical output of 44.00 kW. That output level is sustained with a phase current of 116.8 A, while electromagnetic force at zero speed rises to a standstill torque of 4800 Nm. The stator windings have a resistance of 0.336 Ω at 20 °C and an inductance of 4.5 mH, which influence controller voltage demand and current ripple. For every ampere applied, the motor produces 32.70 Nm of torque according to the torque constant. The back EMF constant is 2.700 V min⁻¹ at the same reference temperature. A standstill current of 133.5 A allows the axis to hold load without motion, and dual 25.0 mm² power leads accommodate the conductor size required for these currents.

The overload range extends to a maximum torque of 9200 Nm, which can be delivered for short positioning moves when the controller supplies up to 350.0 A. Peak mechanical velocity reaches 160 min⁻¹, allowing short speed excursions for process demands without losing synchronization. The laminated core and windings are built into a stator that weighs 144 kg, and the assembly fits an outer stator diameter of 565 mm for installation inside large rotary tables or ring housings. Proper thermal management is required when the motor operates near its short-term limits so winding temperature remains within an acceptable range during acceleration bursts.