MDD025A-N-100-N2K-040PL0
The MDD025A-N-100-N2K-040PL0 is a compact synchronous servo motor produced by Bosch Rexroth Indramat as part of the MDD Synchronous Motors series. Classified as a motor for digital drive controllers, it serves as the rotary actuator in closed-loop positioning axes and high-speed spindles. Its compact frame suits automation equipment that needs fast response, steady speed regulation, and repeatable motion in a limited installation space. That makes it well suited to machine modules where low inertia and precise rotary control are both important during continuous operation.
At standstill, the rotor can hold a continuous torque of 0.33 Nm, which indicates how much load the axis can support at zero speed without overheating. During motion, it reaches a nominal speed of 10,000 rpm, allowing lightweight tooling to cycle quickly. The stator face has a 40 mm centering pilot that aligns the motor with the machine frame and preserves standard balancing. Position data is sent by resolver feedback, which provides analog sine-cosine signals that resist electrical noise. Torque is transmitted through a shaft with a keyway, so pulleys or couplings can lock mechanically without slip. Power and feedback connections exit on the left side of the housing, which helps keep cable routing organized in compact cabinets.
The model uses Motor Length Code A and Motor Size 025, so the aluminum housing stays short while still offering enough surface area for heat dissipation. It is fitted with a shaft seal at the output end to help keep coolant or dust away from the bearings during normal operation. Rotor position is also available through an integrated absolute encoder, allowing indexing immediately after power-up without a homing routine. The motor is supplied without a blocking brake, so a separate holding device is needed when the load must remain fixed at standstill. A standard shaft end on the drive side and the absence of a side-B shaft simplify mounting where only one mechanical output is required.
