Product Description:

The MRT290D-3N-0200-NNNN belongs to the MRT Synchronous IndraDyn T Motors series produced by Bosch Rexroth Indramat. It is a frameless torque motor rotor intended for direct-drive applications where high torque is required without mechanical transmissions. In industrial automation, the rotor pairs with a stator to create a compact rotary axis that delivers continuous torque from zero speed and supports precise position control in space-limited machine layouts.

The electromagnetic layout generates an axial attractive force of 290 N and a radial attractive force of 1500 N, so machine bearings must accommodate these constant magnetic loads. An inside rotor diameter of 200 mm lets the motor sleeve fit around large shafts or hollow mechanical elements, keeping cabling and pneumatic lines centered inside the axis. The mechanical maximum speed is limited to 2000 rpm, which is the highest permissible rotational speed before centrifugal stress exceeds the allowed limit. Dynamic response is influenced by a rotor inertia of 0.11000 kg·m²; this relatively high inertia can smooth speed fluctuations but also lengthen acceleration times. The degree of protection is IP00, so the rotor must operate inside a housing that provides its own shielding against dust and liquids.

The rotor weighs 9.0 kg, which keeps handling manageable during assembly while still supporting the motor's torque capacity. Its windings and insulation conform to thermal class 155, allowing continuous operation at the corresponding temperature limit when the ambient range stays between 0 °C and 40 °C. Mounting uses screws that engage twelve fixing points tapped to M6 / 14 mm deep, which helps distribute clamping force evenly around the laminated core. The permanent-magnet construction maintains constant magnetic flux so the rotor remains suitable for direct-drive motion systems that require stable torque production throughout repeated operating cycles.