Product Description:

The MST130C-0075-NS-N0CN-D303 is a frameless synchronous torque motor from the MST Synchronous Torque Motors series manufactured by Bosch Rexroth Indramat. Designed for direct-drive rotary axes in industrial automation, the stator and rotor are integrated directly into the machine so mechanical transmissions are eliminated. The motor supplies constant torque at low speed, allowing indexing tables, printing cylinders, or winding stations to position loads with a high degree of repeatability and without backlash.

Under continuous operation, the stator draws a 3.5 A phase current to produce a mechanical output of 1.1 kW. At the rated shaft speed of 750 rpm, this current yields a steady-state torque of 13.5 Nm, which is suitable for positioning tasks in the 130 mm frame size. When dynamic moves demand extra force, the electromagnetic design allows a peak of 40 Nm without exceeding thermal limits. The speed-torque curve is optimized around the permanent-magnet rotor, so even at zero speed the motor can deliver full load without gear reduction. A power conductor section of 1.0 mm² minimizes I²R losses, and the standard encapsulation secures the windings against vibration.

Thermal management relies on self-cooling, meaning heat is dissipated through the motor’s laminated core and mounting surface, and no external blower or coolant jacket is required. The open construction is classified IP00, so the stator must be installed inside a protected housing to exclude dust and coolant spray. During acceleration events, the phase current can reach 13 A, so appropriate drive electronics must be selected. A winding temperature sensor issues a warning at 145 °C and trips at 155 °C to help prevent insulation damage. Weight is 6.9 kg, and electrical leads exit on the stator’s larger outside diameter for straightforward routing. The unit ships without an encoder, leaving feedback selection to the machine builder.