Product Description:

The MST160E-0027-FT-N0CN-NNNN is a direct-drive synchronous torque motor produced by Bosch Rexroth Indramat for the MST Synchronous Torque Motors series. It is intended for rotary tables, printing cylinders, and similar automation axes where gear stages are not needed, because it can provide high continuous torque at very low shaft speed. Its stator jacket accepts liquid coolant, and the windings are enclosed in a thermal casing so heat can transfer directly into the machine cooling circuit.

The motor can deliver up to 270 Nm at the shaft. Its continuous operating point uses a rated speed of 250 rpm and a rated torque of 125.0 Nm. At that operating point, the motor draws 9.8 A of phase current and produces 3.30 kW of mechanical power. A torque constant of 12.75 Nm/A shows the relationship between stator current and output torque, which helps reduce inverter current demand during holding and low-speed motion. Axial cable lead-through helps with routing inside rotating housings, while the thermal casing helps shield the windings from contamination. Winding resistance is 12.4 Ω at 20 °C, and the voltage constant is 0.893 V/rpm for drive control. Because the motor does not include an internal encoder, an external feedback device is required for closed-loop positioning.

The electrical design supports a top speed of 450 rpm for faster index moves. Standstill torque can rise to 145 Nm when the shaft is magnetically locked. During stall or very slow movement, thermal loss in the stator is limited to 3.00 kW, and the thermal time constant of 7.0 min shows that temperature can increase quickly if coolant flow is interrupted. Liquid cooling helps remove heat evenly across the stator, and the lack of an internal encoder leaves space for large-diameter hollow shafts or added external sensing hardware.