MDD025A-N-100-N2G-040FD0
The MDD025A-N-100-N2G-040FD0 is a compact synchronous servo motor produced by Bosch Rexroth Indramat for integration with digital drive controllers in the MDD Synchronous Motors series. Within an automation cell, this motor supplies precise rotary motion for light-duty axes, pick-and-place heads, or small spindles where high speed and low inertia are required. Its standard housing, balancing, and plain output shaft allow straightforward mounting to gearheads or belt pulleys, while the resolver embedded in the stator returns position data to the drive for closed-loop control.
The motor has a continuous standstill torque of 0.33 Nm, which is the constant load it can hold without overheating while the rotor is stationary. Dynamic operation is supported by a nominal speed of 10000 rpm, allowing rapid velocity changes in short-stroke mechanisms. Accurate mechanical alignment is supported by a centering diameter of 40 mm, which mates with the pilot bore in the mounting flange. Power and feedback conductors exit on side B, helping keep cabinet wiring clear of the driven equipment. The motor uses a connecting cable with a coupling unit, providing a quick-disconnect interface that supports cable routing through drag chains.
The feedback system uses resolver feedback, supplying rotor position information for closed-loop control while remaining reliable in electrically noisy environments. For applications that rely on external holding methods, the motor is supplied without a blocking brake, preventing unnecessary mass on high-speed axes. A plain shaft without a keyway reduces stress concentrations and suits press-fit couplings, while the lack of a shaft seal fits clean, dry environments where ingress protection is handled at the machine enclosure. Standard dynamic balancing limits residual vibration, and the 025 frame size with A length keeps inertia low for responsive servo behavior.
