Product Description:

The MDD025B-N-100-N2G-040MC1 is a compact synchronous servo motor produced by Bosch Rexroth Indramat for the MDD Synchronous Motors series. Intended for digital drive controllers, it supplies precise rotary motion in pick-and-place stations, small indexing tables, and other high-speed automation tasks. The unit uses a connecting cable with a coupling unit to simplify wiring between the drive and controller, and a blocking brake secures the shaft when power is removed. Its housing and shaft end follow the standard mechanical outline of the series, and the 025 frame size keeps the stator compact for machines with limited mounting space.

Its continuous stall torque is 0.60 Nm, meaning the rotor can hold that load indefinitely without exceeding thermal limits. When driven at the rated electrical frequency, the rotor reaches a nominal speed of 10,000 rpm, which is suited for fast positioning cycles in lightweight axes. For emergency stops, the internal brake applies 1.0 Nm to the shaft to help prevent drift on vertical loads. Power and feedback conductors exit on side A, which can simplify layouts when drives are mounted to the left of the machine. A centering diameter of 40 mm aligns the flange with gearboxes or coupling hubs, while the shaft uses a keyway so torque can be transmitted through a keyed hub. The motor has a single shaft end, and the opposite side is left unmachined.

Dynamic behavior is supported by the rotor’s mass distribution, which follows the standard balancing grade to reduce vibration across the speed range. Position data is returned through resolver feedback, allowing the drive to maintain accurate speed and position control during operation. The motor is supplied without a shaft seal, so it is best suited for clean, dry areas or for use with external protection when fluids are present. Its mechanical envelope corresponds to length code B, which provides additional stack height over the shorter A variant.