MST290B-0018-FT-N0RN-NNNN Bosch Rexroth Indramat
Wake Industrial LLC is not an authorized distributor of this product.
MPN: R911321031
The Bosch Rexroth Indramat MST290B-0018-FT-N0RN-NNNN is part of the MST Synchronous Torque Motors series and provides a rated power of 4.1 kW and a rated torque of 220 Nm. This motor has a maximum current of 60 Amps, features 30 pole pairs, and a rated speed of 180 rpm. The stator mass is 13.5 kg and the torque constant at 20 degrees Celsius is 14.9 Nm per Amp.
Internal Product Review
The MST290B-0018-FT-N0RN-NNNN is a Bosch Rexroth Indramat synchronous torque motor rated for 220 Nm at 180 rpm. A 14.9 Nm/A torque constant supports efficient current-to-torque conversion, and the 460 Nm maximum torque is a strong highlight for demanding direct-drive applications.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
Bosch Rexroth Indramat manufactures the MST290B-0018-FT-N0RN-NNNN as part of its MST Synchronous Torque Motors series. This frameless torque motor is intended for direct-drive rotary tables, indexing heads, or printing cylinders where slow, high-torque motion is required without mechanical gear reduction. By mounting the stator to the machine bed and the rotor to the load shaft, the unit delivers controlled continuous torque for precise positioning tasks in industrial automation.
Under nominal operating conditions the motor supplies a 220 Nm continuous shaft torque at a rated speed of 180 rpm, producing 4.1 kW of mechanical power directly at the load. To reach that operating point the windings draw a rated phase current of 14.8 A; the torque generation is dictated by the torque constant of 14.9 Nm/A, while the induced back-EMF follows a voltage constant of 1.64 V per rpm. The magnetic circuit presents an inductance of 35.3 mH and a DC resistance of 6.3 Ω, figures that influence current ripple and drive sizing. A discharge capacity of 8.41 nF and a minimum cable cross-section of 1.5 mm² complete the electrical connection data. The laminated stator package weighs 13.5 kg, facilitating compact machine integration.
For short acceleration or indexing moves the drive can deliver a peak torque of 460 Nm when the inverter supplies up to 60 A per phase. With 3.3 min of thermal time constant, the stator temperature follows current changes quickly, so duty-cycle calculations must consider heat accumulation during successive peaks. The electromagnetic design uses 30 pole pairs, explaining the high torque density at low rotor speed and the need for high-resolution position feedback. Combined, these overload, thermal, and pole-count characteristics enable precise direct-drive motion without mechanical reducers while keeping wiring and inverter ratings within practical industrial limits.
