Product Description:

The MDD025A-N-100-N2K-040FC0 is a compact synchronous servo unit from the MDD Synchronous Motors series produced by Bosch Rexroth Indramat. Intended for use with digital drive controllers, this motor converts drive commands into rapid, precise rotary motion for pick-and-place axes, small spindles, and laboratory handling systems.

The motor reaches a nominal speed of 10000 min⁻¹, allowing high cycle rates in space-restricted machines. At standstill it can deliver a continuous torque of 0.33 Nm, maintaining position without overheating when the controller regulates current. Frame designation 025 defines the stator diameter, while length code A represents the shortest stack in the series, minimizing inertia for quick reversals. Power and feedback leave the housing through a connecting cable with coupling unit on Side A, simplifying routing inside tight enclosures. Standard housing and standard dynamic balancing keep vibration and mounting complexity low, and an integrated absolute encoder supplies position data directly to the drive.

A centering diameter of 40 mm mates with precision flange registers, ensuring coaxial alignment with gearboxes or bearing blocks. The unit is supplied without a blocking brake, so external clamps or sustained servo torque must hold loads during power-off. Motion is transferred by a plain shaft that has no secondary end on side B, and there is no shaft seal to reduce friction in high-speed service. Rotor angle is reported through resolver feedback, which tolerates harsh electrical environments better than optical devices. Additional characteristics include a standard housing, a side-A connection direction, and the absence of a shaft seal to favor low drag.

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