MDD025A-N-100-N2G-040FA1
The MDD025A-N-100-N2G-040FA1 is a brushless synchronous servo unit built by Bosch Rexroth Indramat within the MDD Synchronous Motors series. Classified as a motor for digital drive controllers, it couples directly to compact axis modules to convert commanded current into precise rotary motion in automated assembly, packaging, and handling equipment. The motor follows size 025 geometry with a short A-length stator. It uses a standard housing, and its rotor is dynamically balanced to the standard grade so vibration remains low when integrated on lightweight mechanical frames. This operating role suits small servo axes that require fast and repeatable positioning during short motion cycles.
Its performance envelope includes a continuous standstill torque of 0.33 Nm, allowing the drive to hold modest loads without exceeding thermal limits. Under rated excitation, the rotor can reach a nominal speed of 10000 rpm, supporting high throughput on small indexing tables. The flange uses a 40 mm centering diameter for accurate alignment to gearheads or adapter plates. This compact interface helps maintain accurate concentricity between the motor and the driven load. Power and feedback cables exit on side A, and the motor uses a keyed connector interface to simplify wiring. A shaft seal is not fitted, so the mounting location must remain free of splashing coolant or oil. The shaft end is provided on one side only.
Position retention during power-off states is handled by an integrated 1.0 Nm brake. The unit is supplied with a blocking brake, so vertical axes can remain parked without external clamps. Servo loop accuracy depends on embedded resolver feedback, which supplies rotor angle information to the digital controller at high update rates. The resolver also supports commutation and stable speed regulation across changing load conditions. Drivetrain mating is straightforward because the rotor terminates in a plain shaft, eliminating keyways that can introduce runout on miniature couplings.
