MST530D-0012-FT-N0CN-NNNN
MST Synchronous Torque Motors
The MST530D-0012-FT-N0CN-NNNN torque motor is built by Bosch Rexroth Indramat as part of the MST Synchronous Torque Motors series. It is a water-cooled, low-speed synchronous machine intended for direct mounting to process shafts or rotary tables in heavy-duty automation. By supplying very high torque at crawl speeds it removes the need for gearboxes, simplifies mechanical layouts, and supports accurate, backlash-free motion control in continuous or indexing applications.
At its electrical limits the motor develops a peak shaft moment of 3760 Nm while the converter may supply up to 156.4 A of phase current. For continuous duty the rotor turns at 120 1/min and produces 21.10 kW of mechanical power with a rated current of 47.2 A. The electromagnetic conversion factor is established by a torque constant of 35.59 Nm/A, and the induced voltage rises at 2.531 V per revolution per minute. A winding resistance of 1.017 Ω sets copper losses, ensuring the drive amplifier can predict thermal load and implement current limits. The MST530D-0012-FT-N0CN-NNNN should be routinely inspected for physical wear and damage during a routine maintenance plan. This includes the frame, any applicable cables, and the area around the motor installation.
Load holding capability is defined by a rated torque of 1680 Nm and a standstill torque of 1920 Nm. Thermal behavior is characterized by 5.40 kW of loss and a time constant of 8.3 min, so transient overloads can be absorbed without rapid overheating. Cooling circuits must deliver 7.0 l/min of flow, and inlet pressure must stay below 6.0 bar to protect seals. Motor power leads use 10.0 mm² conductors, and the laminated stator exhibits an inductance of 11.91 mH, which limits current ripple and helps the drive regulator maintain smooth torque at low speed.
Technical Specifications
Max Coolant Inlet Pressure
6.0 bar
Max Electrical Speed
170 rpm
Maximum Current
156.4 A
Maximum Torque
3760 Nm
Power Dissipation
5.40 kW
Power Wire Cross-section
10.0 mm²
Rated Current
47.2 A
Rated Power
21.10 kW
Rated Speed
120 rpm
Rated Torque
1680 Nm
Required Coolant Flow
7.0 L/min
Standstill Current
53.8 A
Standstill Torque
1920 Nm
Thermal Time Constant
8.3 min
Torque Constant (20 °c)
35.59 Nm/A
Voltage Constant (20 °c)
2.531 V/rpm
Winding Inductance
11.91 mH
Winding Resistance (20 °c)
1.017 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 MST530D-0012-FT-N0CN-NNNN. 
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