Product Description:

Bosch Rexroth Indramat designed the MDD025A-N-100-N2G-040ML1 as a compact synchronous servo unit within the MDD Synchronous Motors series. Classified as a motor for digital drive controllers, it converts command signals from compatible inverters into accurately controlled rotational motion. The device is aimed at axes that demand very rapid speed changes in packaging, pick-and-place, or small spindle stages, where its lightweight rotor and integral position sensor help maintain tight servo loops. Its compact format also helps the motor fit into crowded machine spaces where low moving mass supports quick reversals and short indexing cycles. That behavior is useful on small axes that must settle quickly after frequent start-stop commands.

The mechanical outline follows the series conventions. Frame size 025 establishes a small flange square, while a centering diameter of 40 mm allows repeatable concentric mounting to gearheads or fixtures. The motor length code A indicates the shortest stator stack in this family, reducing mass for quick acceleration. Power and feedback conductors exit on the left side, and they are routed through a single industrial connector to simplify cabling. Standard balancing keeps residual vibration low, and the housing uses a sealed aluminum design. A single shaft end is supplied with a keyway for positive mechanical coupling, and the shaft area is built without a shaft seal to minimize friction.

Dynamic ratings complement the compact form. At standstill the motor can deliver 0.33 Nm continuously without exceeding its thermal limit, feeding small loads with stable torque for positioning. During power-off or an emergency stop, a built-in blocking brake applies 1.0 Nm to secure the shaft, so external holding devices are not always required on vertical axes. The stator and rotor are configured for a nominal speed of 10000 rpm, enabling rapid travel cycles when paired with suitable high-frequency drives. Motion feedback is provided by resolver feedback, which gives reliable rotor position signals across the speed range and remains resistant to electrical noise.