MDD021A-N-100-N2G-032MA0 Bosch Rexroth Indramat

Product Description:

The MDD021A-N-100-N2G-032MA0 is a small-frame synchronous motor manufactured by Bosch Rexroth Indramat as part of the MDD Synchronous Motors series. Classified as a motor for digital drive controllers, it integrates into compact servo axes where high speed and limited continuous torque are required for positioning or light pick-and-place duties. The unit converts command currents from an electronic drive into mechanical rotation while maintaining tight phase alignment with the controller.

It achieves a nominal speed of 10000 min⁻¹, letting machine designers couple the rotor directly to miniature spindles without intermediate gearing. At standstill the motor can supply a continuous torque of 0.15 Nm, a figure governed by copper losses and housing radiation. Accurate mechanical centering is aided by a 32 mm pilot diameter so mounting faces remain concentric with the shaft. Electrical power, feedback, and protective earth exit on Side A, and terminations are made through a rugged connector interface, which simplifies cabinet wiring. The rotor is balanced to the standard quality grade, keeping vibration within limits at full speed, and the housing follows the series’ standard external envelope. Size code 021 and length code A define the short active stack that contributes to low inertia.

A resolver supplies rotor position, so the drive receives absolute analog feedback through resolver feedback rather than digital encoders. The shaft is machined with a keyway to transmit torque without slipping, and the form is the single-ended style, meaning there is no shaft extension on side B. Because the motor is furnished without a blocking brake, static holding torque must be provided by the drive or an external clamp. It is also delivered without a shaft seal, so the installation environment should be free of liquid spray or fine dust that could migrate along the shaft hub.