MDD025B-N-100-N2G-040GD0
The MDD025B-N-100-N2G-040GD0 is a miniature AC synchronous servo motor built by Bosch Rexroth Indramat for the MDD Synchronous Motors series. It is intended for digital drive controllers where compact dimensions and high spindle speeds are required. By converting electrical commands from the associated drive into mechanical rotation, the unit provides precise position and velocity control in automated assembly stations, small robotics, and pick-and-place axes.
Its nominal speed reaches 10,000 rpm, allowing fast indexing and short cycle times when paired with the appropriate inverter. At standstill, the rotor can develop 0.60 Nm of continuous torque, which supports static loads without overheating. The stator uses a 40 mm locating flange to maintain concentric alignment. The frame size is 025, and the compact dimensions help keep inertia low. Power and feedback conductors exit on side B, which simplifies cable routing inside narrow machine frames. The interface uses a connecting cable with a coupling unit, which helps route wiring through sealed cabinet bushings. Because the motor is supplied without a blocking brake, applications that require power-off holding must rely on external clamping devices or drive torque.
Dynamic balance is kept to the manufacturer’s standard grade, reducing vibration as the shaft accelerates to top speed. Position data is returned through resolver feedback, which remains reliable at high temperatures and supports analog velocity loops in the drive. Contaminant ingress is limited by a shaft seal, and the output side uses a plain shaft so couplings can be mounted directly without keyways. The housing follows the standard enclosed pattern, and motor length code B provides a longer active stack for additional copper fill. A single shaft end is provided, with no extension on side B, which helps keep the overall length short.
