MST290D-0018-FT-N0SN-NNNN Bosch Rexroth Indramat
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MPN: R911296315
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The Bosch Rexroth Indramat MST290D-0018-FT-N0SN-NNNN is part of the MST Synchronous Torque Motors series and delivers a maximum torque of 700 Nm with a maximum current of 100 A. It provides a rated power of 6.60 kW, rated speed of 180 min-1, and a rated torque of 350 Nm. The motor features a coolant flow of 7.0 liters per minute and has a standstill torque of 365 Nm.
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Product Description:
Bosch Rexroth Indramat builds the MST290D-0018-FT-N0SN-NNNN as part of the MST Synchronous Torque Motors series. This frameless stator-rotor set is intended for direct-drive rotary tables, indexing heads, and similar axes in industrial automation where high continuous torque at low speed is preferred over gearbox solutions. Because the active parts are supplied without an external housing, the assembly can be integrated directly into a machine structure or custom bearing arrangement. Integrated liquid channels circulate coolant through the laminated core so the motor can be mounted directly into the machine without a separate motor housing.
Under continuous duty, the motor produces 350.0 Nm at 180 min⁻¹, yielding 6.60 kW of mechanical output. Its rotor uses 30 pole pairs, which supports high torque density at low speed. The phase set has an inductance of 12.9 mH, and that electrical characteristic influences current rise time and servo response. Rated current is 26.0 A, the torque constant is 13.50 Nm/A, the back-EMF constant at 20 °C is 0.962 V per min⁻¹, and winding resistance is 2.24 Ω. For holding and fine positioning, the motor can supply 365 Nm of standstill torque without exceeding the permissible temperature.
During rapid index moves, the electromagnetic system can deliver up to 700 Nm when the inverter supplies a peak current of 100.0 A. Liquid cooling requires 7.0 l/min, and the internal duct volume of 0.31 l helps distribute coolant across the stator surfaces. A thermal time constant of 3.3 min allows overload heat to dissipate quickly during short bursts. Electrical operation may reach 400 min⁻¹ when faster positioning is required, but the control design must account for the higher back-EMF and the limits of the power stage.
