MDD025B-N-100-N2K-040MF0
The MDD025B-N-100-N2K-040MF0 is a compact synchronous servo unit produced by Bosch Rexroth Indramat within the MDD Synchronous Motors series. Supplied as a motor for digital drive controllers, it converts controller current commands into precise rotary motion for small-axis positioning, pick-and-place heads, and light tool spindles in automated machinery. By integrating position feedback and matching electrical characteristics with compatible Indramat drives, the device supports closed-loop velocity and position control through rapid starts, stops, and direction changes. Its compact format also suits tightly spaced machine layouts where responsive motion and efficient use of installation space are important.
At standstill, the rotor can deliver 0.60 Nm of continuous torque, a value supported by the winding design and the standard balancing class that helps minimize residual vibration. Under commanded speed, the shaft reaches 10,000 rpm, so the connected drive must provide adequate current and commutation performance. Axial alignment during mounting relies on a centering collar with a diameter of 40 mm, while power and feedback conductors exit on the right side through a connecting cable with a coupling unit that helps simplify cable routing. Mechanical energy is transmitted through a shaft with a keyway, allowing keyed pulleys or couplings to lock in place without slip. Electrical rotor position is reported through resolver feedback, which supports the fast signal updates needed for dynamic servo control.
The motor is intended for compact frames, as shown by the 025 size designation and the B length code, which keep the housing short while maintaining useful thermal capacity. It is supplied without a blocking brake, so any power-off holding function must come from external clamping or drive-generated torque. The housing relies on internal fits because no shaft seal is installed. The shaft end is supplied in a standard single-ended form, which suits machinery that does not require a through-shaft arrangement and keeps coupling installation straightforward.
