Product Description:

The MDD090B-N-040-N2M-130PA2 synchronous motor is produced by Bosch Rexroth Indramat within the MDD Synchronous Motors series. Designed for digital drive controllers, it converts drive current into precisely regulated mechanical rotation for positioning and speed tasks in industrial automation cells. An integrated multi-turn absolute encoder supplies absolute position information to the connected drive, enabling coordinated multi-axis motion. This feedback arrangement lets the controller retain shaft position information across multiple revolutions and respond accurately during startup and synchronized movement.

The rotor is dynamically balanced to a standard grade, so vibration remains within limits when the motor runs at its rated speed. A centering pilot of 130 mm aligns the housing and reduces radial runout at the mounting face. Power and feedback lines exit on Side A when viewed from the drive end, and the motor uses a sealed Connector for cable attachment. At standstill, the winding delivers 7.2 Nm of continuous torque, and the design reaches a nominal speed of 4000 rpm under rated current. Its housing uses the standard ventilated enclosure, and a shaft seal protects the internal bearings from contamination. The B length code indicates a medium rotor stack.

For load holding during downtime, the integrated blocking brake produces 11.0 Nm of static torque. The brake holds the load at standstill when drive torque is removed, which helps the axis remain stationary during downtime or power-off conditions. Position data reach the drive through Digital servo feedback, which supports accurate commutation across the speed range. Mechanical power is transmitted through a shaft with a keyway, which simplifies coupling to pulleys or gearboxes. The motor uses frame size 090, and there is no side-B shaft end. That layout keeps the rear of the motor compact for installations with limited clearance.