MST290D-0018-FT-N0RN-NNNN Bosch Rexroth Indramat
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MPN: R911319616
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The Bosch Rexroth Indramat MST290D-0018-FT-N0RN-NNNN is part of the MST Synchronous Torque Motors series and uses liquid cooling with thermal encapsulation. This motor delivers a rated power of 6.6 kW and a rated torque of 350 Nm, with a maximum current of 100 Amps and a maximum torque of 700 Nm. It provides a rated speed of 180 per minute and features a torque constant of 13.50 Nm per Ampere at 20 degrees Celsius.
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Product Description:
The MST290D-0018-FT-N0RN-NNNN is a liquid-cooled torque motor manufactured by Bosch Rexroth Indramat and supplied within the MST Synchronous Torque Motors series. As a frameless direct-drive unit, it mounts directly into rotary tables or extruder screws, eliminating gearboxes and providing high continuous torque for precision positioning and constant-speed processes in industrial automation. The frameless stator and rotor are integrated into the machine structure, which helps reduce backlash and supports compact axis layouts. This arrangement is useful where low-speed motion and high torque must be combined in the same axis.
Under nominal load, the motor delivers a rated torque of 350 Nm at a rated speed of 180 rpm, producing 6.6 kW of mechanical power while drawing a rated phase current of 26.0 A. These values describe the continuous operating range that the drive amplifier must support. A winding inductance of 12.9 mH shapes the current rise time, so current controllers can be tuned for smooth torque without excessive bandwidth. Heat generated by the 2.24 Ω winding resistance is removed through integrated liquid channels, which helps keep stator temperature stable while the thermal encapsulation protects the coils. The radial electrical connection with a large outside diameter simplifies cable routing in hollow-shaft installations, and a measured leakage capacitance of 14.7 nF should be considered when sizing RFI suppression components.
For short duty cycles, the motor can reach a peak torque of 700 Nm and may accept momentary currents up to 100.0 A, giving the axis additional headroom for acceleration or disturbance rejection. A torque constant of 13.50 Nm/A links drive current to output torque, while the back-EMF coefficient of 0.962 V/rpm assists the inverter in estimating speed without an encoder during open-loop startups. Maximum electrical speed is limited to 400 rpm to maintain magnetic integrity. The 4.0 mm² power conductors accommodate these current levels, and the thermal encapsulation layer helps prevent moisture ingress during coolant maintenance cycles. This is useful in high-torque rotary axes that must overcome inertia quickly after a start or a load change.
Frequently Asked Questions about MST290D-0018-FT-N0RN-NNNN:
Q: What type of cooling does the MST290D-0018-FT-N0RN-NNNN torque motor use?
A: The MST290D-0018-FT-N0RN-NNNN motor uses liquid cooling for efficient heat management.
Q: What is the maximum torque that the MST290D-0018-FT-N0RN-NNNN can deliver?
A: This model provides a maximum torque output of 700 Nm for high-torque applications.
Q: What is the rated current for the MST290D-0018-FT-N0RN-NNNN motor?
A: The rated current for this motor is 26.0 A, supporting sustained operation at its specified performance.
Q: What type of encapsulation does the MST290D-0018-FT-N0RN-NNNN motor feature?
A: With thermal encapsulation, the MST290D-0018-FT-N0RN-NNNN offers enhanced temperature protection for internal components.
Q: What power wire size is specified for the MST290D-0018-FT-N0RN-NNNN torque motor?
A: The power wire size required for this motor is 4.0 mm², ensuring safe electrical connections.
