MDD021B-N-100-N2K-032MB0
The MDD021B-N-100-N2K-032MB0 is an AC servo motor from the MDD Synchronous Motors series manufactured by Bosch Rexroth Indramat. It is designed for digital drive controllers and is intended for compact automation axes where high speed and precise position feedback are needed. An integrated absolute encoder provides multi-turn position data to the controller, while resolver signals support commutation, so the drive can determine rotor angle after power-up and maintain stable motion without an incremental homing cycle. This arrangement is useful in small handling modules, indexing devices, and other axes that need fast starts, short positioning moves, and accurate repeatability.
The motor reaches a nominal speed of 10000 rpm, enabling rapid cycle times in pick-and-place heads and lightweight spindle applications. At standstill it can deliver 0.30 Nm continuously, which indicates the torque available while the motor remains energized. A centering diameter of 32 mm aligns the flange on the machine face, and size code 021 identifies the motor's stator dimensions within the series. All power and feedback conductors exit on side B, which helps route cables away from the working area and keeps the connection side consistent in compact assemblies. Because the motor is small, the combination of high speed and modest continuous torque suits low-mass loads more than heavy holding duties.
Standard dynamic balancing helps reduce vibration at speed, and the motor uses a connector interface for the electrical connection. The single-ended shaft has a keyway for secure coupling attachment, and it is supplied without a shaft seal, so it is better suited to clean, dry enclosures than to wet or contaminated areas. The motor is also supplied without a blocking brake, so holding torque must come from the energized drive or from external mechanics when the axis is stopped. The standard housing design supports a practical balance between compact size, low inertia, and steady thermal behavior.
