Product Description:

The MST530G-0010-FT-N0CN-D303 torque motor is produced by Bosch Rexroth Indramat within the MST Synchronous Torque Motors series. As a direct-drive rotary unit, it delivers high stall torque at very low speeds, making it suitable for indexing tables, extruders, and print cylinders where gearboxes are undesirable. The motor integrates a liquid-cooling jacket and transmits power without mechanical transmission stages, allowing precise speed control in industrial automation lines. This direct-drive arrangement also reduces backlash and removes wear points associated with belts, pulleys, or reduction gears.

At its continuous operating point, the motor supplies 4200 Nm while turning at 100 rpm, producing 44 kW of mechanical output. Holding this load requires a phase current of 116.8 A, and each additional ampere increases torque by 32.70 Nm/A. The 2×25 mm² power leads accommodate this current with acceptable temperature rise. Internal copper windings present a 4.5 mH inductance and 0.336 Ω resistance, and these values influence current ripple and the drive control loop. Back electromotive force rises with speed at 2.700 V min⁻¹, so the inverter must provide adequate DC bus voltage. Liquid passes through a 370 mm cooling jacket, and heat is rejected across a 565 mm outer diameter, helping keep temperatures stable for continuous duty while the open construction matches the IP00 design.

During short duty cycles, the motor delivers 9200 Nm of peak torque before thermal limits are reached. Attaining that level calls for up to 350 A from the drive, so the power stage must withstand heavy surge currents. Installation demands are moderated by a frame mass of 147 kg, allowing direct mounting on precision tables without excessive structural reinforcement. The open housing lets machine builders add custom enclosures or airflow management, and the reserve torque margin supports rapid indexing and acceleration without external gearing. Because the housing is open, the motor must be installed inside equipment that provides appropriate guarding and contamination control.