MST290D-0018-FT-N0CN-NNNN Bosch Rexroth Indramat
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MPN: R911299027
The Bosch Rexroth Indramat MST290D-0018-FT-N0CN-NNNN is part of the MST Synchronous Torque Motors series and features liquid cooling and thermo-encapsulation. This torque motor has a maximum torque of 700 Nm, a rated torque of 350 Nm, and a rated power of 6.60 kW. It operates with a maximum current of 100 Amps and a rated velocity of 180 rpm, with the stator weighing 20 kg.
Internal Product Review
The MST290D-0018-FT-N0CN-NNNN is a Bosch Rexroth synchronous torque motor with liquid cooling and thermo-encapsulation, well suited for demanding direct-drive service. Rated output of 350.0 Nm at 180 rpm supports stable low-speed torque delivery and smooth axis control. Peak capability reaches 700.0 Nm, a strong performance margin for high-inertia applications.
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Product Description:
The MST290D-0018-FT-N0CN-NNNN is manufactured by Bosch Rexroth Indramat and belongs to the MST Synchronous Torque Motors series. This rotary direct-drive component is intended for integration into machinery that needs high continuous drive capability at low rotational speed. By mounting the stator directly to the machine frame and energizing its windings through a matched inverter, the unit delivers its rated mechanical output with precise velocity control in automated equipment. The direct-drive layout also avoids added transmission elements, which helps reduce backlash and supports smooth motion at low speed.
At the nominal operating point, the motor develops 350.0 Nm while turning at 180 rpm, which corresponds to 6.60 kW of mechanical power and a phase current of 26.0 A. A torque constant of 13.50 Nm/A links generated torque to armature current and supports predictable current-to-torque behavior in the matched drive. The stator uses liquid cooling, and a coolant flow of 7.0 l/min carries heat away from the thermo-encapsulated windings during continuous duty. That encapsulation also helps protect the 30-pole-pair magnetic circuit from vibration, while power is supplied through a larger-diameter cable at the stator end.
For transient demands, the winding system can supply 700.0 Nm with a peak current of 100.0 A before thermal limits are reached. Electrical response is influenced by an inductance of 13.4 mH and a resistance of 2.25 Ohm at 20 °C, which affect current rise and the heat produced in the windings during acceleration. The unit is supplied without an encoder, so position feedback must come from an external device when closed-loop positioning is required. The active section weighs 20 kg, which helps the motor fit into compact machine assemblies without adding unnecessary bulk.
