MDD025A-N-100-N2K-040PL1
The MDD025A-N-100-N2K-040PL1 is a compact synchronous motor manufactured by Bosch Rexroth Indramat and supplied within the MDD Synchronous Motors series. It is intended for use with digital drive controllers, where it converts commanded current into fast, accurate rotary motion for pick-and-place axes, small spindle drives, and other equipment that needs quick acceleration. The frame code 025 and length code A indicate a small housing, and the motor uses a standard shaft end without a side B extension. Its compact size also suits tightly spaced machine layouts where motor mass and available mounting room are limited. A keyed shaft interface allows direct coupling to light mechanical loads.
This model delivers a continuous stall torque of 0.33 Nm, which supports position holding before motion begins. Its nominal speed reaches 10000 rpm for rapid cycle operation. Position holding during power-off is provided by a blocking brake with 1.0 Nm of holding torque. The motor centers on a 40 mm pilot diameter for concentric mounting to gearheads or flanges. Electrical power and feedback are routed through a single connector, which keeps the package narrow and simplifies cable routing. This arrangement suits small-axis designs that need both motion control and static load retention in one assembly. The housing is the standard version and does not use additional cooling channels.
Motion data is handled by resolver feedback together with an integrated absolute encoder. The resolver supplies commutation information, while the encoder provides absolute position data for closed-loop control after startup. That combination supports stable speed regulation and repeatable positioning in compact automation tasks. Wiring exits on the left side of the stator, which can help keep service loops away from moving machine elements. A dedicated shaft seal helps block dust or coolant from migrating along the shaft. The keyway profile helps prevent slippage during acceleration. The rotor is dynamically balanced to the standard grade used for this motor line, which helps maintain smooth running at high speed.
