Product Description:

The MDD021B-N-100-N2G-032MB0 is a synchronous servo motor manufactured by Bosch Rexroth Indramat for the MDD Synchronous Motors series. Intended for digital drive controllers, it delivers rotary motion to precise, low-inertia axes used in assembly stations and small handling units. The rotor is balanced to the standard grade, and the housing follows the series’ standard enclosure profile. Electrical power and feedback reach the unit through an integrated connector, reducing wiring complexity during cabinet installation.

Its mechanical rating provides a continuous standstill torque of 0.30 Nm, permitting sustained load holding without exceeding thermal limits. The shaft can run at a nominal speed of 10000 min⁻¹, supporting rapid cycle equipment when driven by a compatible inverter. Accurate centering is ensured by a 32 mm locating diameter that aligns the motor face to mounting hardware. All cables exit on Side B, maintaining a consistent bend radius in tight spaces. Feedback is supplied by resolver feedback, delivering absolute position data at every speed. With a frame size coded as 021, the motor occupies minimal footprint while still meeting its torque specification. The length code “B” identifies the intermediate stack height within the series lineup.

Because sealing is controlled externally, the motor ships without shaft seal, avoiding additional bearing friction. It is also supplied without a blocking brake, so static holding torque during power-off must be provided by the drive or an external brake. Torque is transmitted through a keyway shaft, while the opposite end remains blank in accordance with the standard single-ended shaft specification. These construction choices keep mass low, preserve dynamic balance, and maintain the inertia profile required for fast positioning tasks.