MDD021B-N-100-N2K-032FB0
The MDD021B-N-100-N2K-032FB0 is a synchronous motor produced by Bosch Rexroth Indramat within the MDD Synchronous Motors series. Intended for direct coupling with digital drive controllers, the unit provides high-speed rotary motion for compact automation axes such as pick-and-place heads, indexing tables, and small conveyors in industrial environments. Its size 021 stator and B-length frame fit machine sections where installation space is limited, while synchronous operation supports accurate speed control and repeatable positioning in short-cycle equipment.
It uses standard rotor balancing to limit vibration, and both the housing and the front shaft end follow the series standard pattern. A centering diameter of 32 mm establishes the reference surface for mounting against flanges or gearheads. Power and feedback conductors leave the frame on side B through a single circular connector, which simplifies cable routing in confined cabinets. When the rotor is locked, the stator can sustain 0.30 Nm of continuous torque, while the winding permits a nominal operating speed of 10,000 rpm for rapid duty cycles. Position information is delivered by an integrated absolute encoder, allowing the controller to recover the mechanical zero without a homing move, and the rear face carries no secondary shaft.
The motor has a plain shaft, so torque transfer relies on friction couplings instead of keyed interfaces. This shaft style is commonly paired with clamp hubs that provide low-backlash transmission on small servo axes. Because the motor is supplied without a blocking brake, any load holding during power loss must be achieved with external devices. For systems that use analog sinusoidal feedback, the electronics can supply resolver feedback signals as an alternative to the absolute channel. The unit ships without a shaft seal, so additional enclosure measures are required when fluids or fine dust are present.
