MST161E-0050-FT-N0CN-NNNN Bosch Rexroth Indramat
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MPN: R911330465
The Bosch Rexroth Indramat MST161E-0050-FT-N0CN-NNNN is part of the MST Synchronous Torque Motors series and features liquid cooling with an open aluminum cooling jacket. This motor delivers a rated power of 7.80 kW, a rated torque of 110 Nm at 675 rpm, and supports a maximum torque of 260 Nm with a maximum electrical speed of 1050 rpm. It operates with a maximum current of 45.8 A and utilizes KTY84-130 and SNM-150 DK signal sensors.
Internal Product Review
The MST161E-0050-FT-N0CN-NNNN is a synchronous torque motor with liquid cooling and an open aluminum cooling jacket. Rated output is well balanced for continuous-duty operation, with 110 Nm rated torque and 7.80 kW rated power. Peak capability reaches 260 Nm maximum torque, a strong advantage for demanding direct-drive applications.
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Product Description:
The MST161E-0050-FT-N0CN-NNNN is a frameless synchronous torque motor section developed by Bosch Rexroth Indramat for the MST Synchronous Torque Motors series. Installed in rotary positioning and direct-drive indexing axes, it supplies high continuous torque directly to the load without gear reduction, which supports precise low-speed control in industrial automation assemblies. It is supplied as a stator section for integration into a machine housing rather than as a complete housed motor. This layout helps compact rotary tables and other direct-drive mechanisms use the machine structure around the active electromagnetic parts.
An open aluminum cooling jacket surrounds the windings, and liquid cooling removes heat directly at the copper so the motor can operate close to its thermal capacity. Power is supplied through an axial cable lead, which helps routing in compact rotary tables where radial clearance is limited. The embedded KTY84-130 and SNM-150 DK sensors report winding and coolant temperatures, allowing drive-controlled derating when thermal load rises. At a maximum electrical speed of 1050 rpm, the back EMF remains within inverter limits because of the 0.407 V/rpm voltage constant. The drive can deliver up to 45.8 A, letting the electromagnetic system reach a peak torque of 260 Nm during rapid acceleration. A 125 Nm standstill torque supports static holding tasks without an external brake, and a winding inductance of 18.2 mH helps filter current ripple during switching operation.
Under continuous load, the stator draws 16.7 A, producing 110 Nm at a rated shaft speed of 675 rpm and delivering 7.80 kW of mechanical power to the application. These steady-state values align with a torque constant of 6.01 Nm/A, which gives predictable linear response for current-controlled drives. A 3.0 Ω winding resistance limits inrush at startup, while the inductive behavior shapes the electrical time constant used by field-oriented control. This electrical response helps the servo controller maintain low velocity ripple when the axis follows fine interpolation profiles.
