Product Description:

The MDD090B-N-040-N2L-110PR2 synchronous servo motor is produced by Bosch Rexroth Indramat within the MDD Synchronous Motors series. Classified as a motor for digital drive controllers, it serves as the rotary actuator in closed-loop automation where rapid acceleration, deceleration, and position holding are required. The unit includes an integrated brake for power-off holding and connects to the drive through a molded connector, which supports quick installation in packaging lines, handling systems, and general machine tools.

Its continuous stall capability reaches 7.2 Nm, which means the rotor can maintain that torque continuously without exceeding thermal limits when cooled by surface convection. During operation, the shaft can turn at a nominal speed of 4000 min⁻¹, giving the motor a high operating speed for applications that need fast cycle times. When the machine is idle, the blocking brake supplies 11.0 Nm of holding torque to secure vertical or torsion-loaded axes. Mechanical alignment is supported by the 110 mm centering diameter, and power and feedback conductors exit on the right side, so cable routing must be planned for that direction.

The motor transmits position information through digital servo feedback (DSF), allowing the controller to apply dynamic current control with high resolution. A factory-installed shaft seal is fitted behind the bearing to help limit the ingress of coolant spray or dust when the motor is mounted in IP65 assemblies. The rotor uses Standard balancing for steady operation at full speed. Output torque is transmitted through a keyway shaft that matches common hub components, and the design omits a side-B extension to keep the overall length compact. The motor also has a B-length stator, a size 090 frame, a standard housing finish, and a plug-in connector for digital encoder lines and motor power.