MST161C-0140-FT-N0CN-D303
MST Synchronous Torque Motors
The MST161C-0140-FT-N0CN-D303 is a frameless stator-rotor set from Bosch Rexroth Indramat’s MST Synchronous Torque Motors series. As a direct-drive torque motor, it delivers high continuous torque without intermediate gear reduction and is intended for rotary tables, printing cylinders, and similar precision axes in industrial automation. The housing-less format allows the machine builder to integrate the magnetic circuit directly into the mechanical frame, reducing backlash and maintenance. Its electrical design limits rotor frequency to 1900 1/min, accommodating typical high-pole torque motor constructions.
At its rated operating point, the motor runs at a mechanical speed of 1400 1/min while producing a continuous output torque of 52.0 Nm. Supplying the windings with a phase current of 17.4 A achieves this duty point and yields a shaft power of 7.60 kW. When short-term overload is required, the design can withstand a shaft torque of 160 Nm. During such load peaks, the laminated core dissipates up to 1.35 kW of thermal loss through the mounting surface and coolant path.
The electrical envelope is defined by a maximum phase current of 53.0 A and a winding inductance of 10.6 mH, parameters that guide inverter selection and current-loop tuning. With a thermal time constant of 2.0 min, the stator temperature reacts quickly to load changes, permitting frequent cycling when adequate cooling is present. A torque constant of 3.25 Nm/A links drive current to mechanical torque, while the 0.204 V/(1/min) voltage constant establishes back-EMF at speed. Additional figures—5.6 nF leakage capacitance and 2.0 Ω winding resistance—support electromagnetic compatibility and loss calculation during system sizing. Additional questions can be asked to Wake Industrial's free chat tool regarding type codes and general faults.
Technical Specifications
Leakage Capacitance
5.6 nF
Max Speed (electrical)
1900 rpm
Maximum Current
53.0 A
Maximum Torque
160 Nm
Power Dissipation
1.35 kW
Rated Current
17.4 A
Rated Power
7.60 kW
Rated Speed
1400 rpm
Rated Torque
52.0 Nm
Standstill Current
19.2 A
Standstill Torque
65 Nm
Thermal Time Constant
2.0 min
Torque Constant (20 °c)
3.25 Nm/A
Torque Constant (20°c)
3.25 Nm/A
Voltage Constant (20 °c)
0.204 V/(1/min)
Voltage Constant (20°c)
0.204 V/rpm
Winding Inductance
10.6 mH
Winding Resistance (20 °c)
2.0 Ohm
Winding Resistance (20°c)
2.0 Ω
Common Misspellings
Fax: 1-919-867-6204
Shipping & Payment Options
Warranty
Indramat USA 1 Year Warranty
Repair
We offer a repair service for the MST161C-0140-FT-N0CN-D303. 
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