MDD025A-N-100-N2K-040MD1
The MDD025A-N-100-N2K-040MD1 synchronous motor is produced by Bosch Rexroth Indramat as part of the MDD Synchronous Motors series. Designed for digital drive controllers, it converts controlled electrical input into high-speed, finely regulated rotary motion for pick-and-place heads, miniature spindles, and other compact automation axes. It is used in industrial automation where limited installation space and fast acceleration are important. In closed-loop motion systems, the motor responds quickly to command changes so short indexing moves can be carried out with stable speed control. Its compact format also suits small machine modules where a larger servo motor would take up too much space.
The unit delivers a nominal speed of 10,000 rpm, enabling rapid positioning cycles in light-duty mechanisms. At standstill, it can generate 0.33 Nm of continuous torque, which is suitable for maintaining small loads without overheating. A blocking brake is integrated, and its 1.0 Nm holding torque keeps the shaft fixed whenever power is removed. This brake function also helps prevent unintended movement during power-off conditions. Mechanical alignment is simplified by a centering diameter of 40 mm, while the motor size code 025 identifies the compact frame used in this range. Electrical power, resolver leads, and brake conductors exit on side B, which keeps the service face clear for mounting plates and cable carriers.
The rotor uses standard balancing to keep vibration low across the operating range. Position data is captured by an integrated absolute encoder, allowing the drive to maintain accurate commutation and position control during rapid motion changes. A factory-installed connecting cable with coupling unit bundles power, brake, and feedback conductors into one quick-release assembly, which reduces separate cable runs at the motor. The motor has a keyway shaft and no shaft seal, which suits clean, dry environments where direct torque transfer is needed. Its body length code A and the absence of a shaft on the non-drive side help it fit into restricted axial spaces.
