MDD025B-N-100-N2K-040PR0
The MDD025B-N-100-N2K-040PR0 is a compact synchronous motor produced by Bosch Rexroth Indramat for use with digital drive controllers in decentralized or cabinet-mounted automation axes. Belonging to the MDD Synchronous Motors series, the unit provides a direct rotary drive element that couples to planetary gearboxes, belt stages, or load shafts without intermediate couplings. In an automation cell, it delivers precisely metered torque across a wide speed range so positioning and process control loops can be closed by the drive electronics with minimal mechanical compliance. Its compact format is suited to small axes where low moving mass and quick response are important for repetitive motion.
The nominal shaft velocity reaches 10,000 rpm, enabling fast indexing in pick-and-place heads or spindle duties. At standstill, it can supply a continuous torque of 0.60 Nm, which is the thermal limit for holding or low-speed feed tasks before additional cooling is required. Position data is returned through the integrated resolver feedback, a two-phase analog transducer that withstands high acceleration and electrical noise better than incremental encoders. That feedback method gives the paired controller stable commutation signals during rapid reversals and frequent acceleration changes. Power and sensor leads exit with a right-hand connection direction and use a detachable connector, so cable sets can be replaced without opening the housing.
A centering pilot of 40 mm aligns the flange to gearboxes or mounting plates. The steel shaft uses a keyway to transfer torque through keyed couplings. A shaft seal limits contaminant ingress, allowing the motor to operate where coolant spray or oil mist is present. The flange and shaft arrangement allow direct coupling to small gear units and other compact drive components. Because the unit is supplied without a blocking brake, stationary holding torque must be provided by the drive amplifier or an external clamp when vertical loads are involved.
