Product Description:

The MDD090B-N-020-N2M-110GL0 is a synchronous servo motor produced by Bosch Rexroth Indramat within the MDD Synchronous Motors series. It is intended for use with the manufacturer’s digital drive controllers, where it supplies closed-loop torque and speed for tool changers, gantry axes, and other industrial positioning tasks. The frame uses the 090 size class and the B length code, giving a medium-length stator that balances thermal capacity with compact installation requirements.

The motor has a centering diameter of 110 mm, allowing direct mounting into standard Rexroth motor adapters. Power and feedback cabling exit on the left side through a sealed connector, a layout that simplifies cabinet routing when drives are stacked vertically. At standstill, the motor can deliver 7.2 Nm of continuous torque, a value produced by the winding design and the standard housing that dissipates heat by natural convection. A nominal speed rating of 2000 rpm establishes the base velocity at which rated torque and the drive’s field-oriented control curves intersect. Rotor position is resolved by an integrated multi-turn absolute encoder, so the controller knows the shaft angle even after power cycles. Standard balancing minimizes residual vibration, and the plain connector set supports quick exchange without rewiring.

Feedback to the controller is transmitted as digital servo feedback (DSF), which carries high-resolution position data and temperature signals over a single shielded pair. The motor features a plain shaft that mates with clamp or keyless couplings, and it is fitted with a shaft seal to protect the front bearing from coolant splash or fine dust. Because the unit is supplied without a blocking brake, any holding function during power-off must be provided by the machine’s mechanical locking devices. The housing uses a standard cast aluminum design, the balancing quality is standard grade, and the shaft-end arrangement omits a second shaft on side B to keep the overall length short.