Product Description:

The MST360E-0008-FH-N0KR-NNNN belongs to the MST Synchronous Torque Motors series developed by Bosch Rexroth Indramat. It is delivered as a stator for direct-drive rotary tables, extruders, and other low-speed, high-torque axes where removing the gearbox improves accuracy and reduces maintenance. Because it is supplied as a stator, the unit is integrated into the machine structure rather than used as a standalone housed motor. The winding section is housed in an aluminum cooling jacket that is pressed into a steel shell, and liquid channels in this jacket connect the motor to the machine's coolant circuit to keep copper temperatures within their continuous rating.

Under continuous operation, the stator produces a rated torque of 875 Nm while turning at a rated speed of 80 rpm; at these conditions, it delivers 7.30 kW of mechanical power. The drive inverter must supply up to 53.0 A during overload events, although the normal operating current is 21.0 A. A phase-to-phase winding resistance of 4.67 Ω contributes to copper losses and influences the voltage the drive must generate to reach the listed torque at low speed. The connections exit on the right side of the small outside diameter, which helps with cable routing inside compact machine frames. Liquid cooling requires a minimum flow of 6 L/min to remove the thermal load created by stator copper and iron losses.

When the shaft is locked, the stator can generate a standstill torque of 1050 Nm, giving holding capacity for indexing tables without a mechanical brake. Short bursts permitted by the thermal model allow a peak capability of 2000 Nm, which is useful for accelerating large inertias. Each ampere of phase current produces approximately 41.67 Nm/A, a constant that helps the control loop convert demanded torque into commanded current. To avoid coolant vapor formation, the coolant inlet pressure must stay below 6.0 bar.