Product Description:

Bosch Rexroth Indramat builds the MDD025B-N-100-N2K-040PF0 as part of the MDD Synchronous Motors series. The unit is a compact AC servo motor intended for digital drive controllers where fast cyclic positioning is required on small axes. It supplies closed-loop torque and speed for actuators, pick-and-place heads, or lightweight spindles used in automated assembly cells and electronic packaging machines. Its compact format also suits installations where moving mass and mounting space must stay low. This size is useful in densely packed machine modules where cable routing and axis spacing are limited.

The rotor uses size code 025 and length code B, and its active stack provides a continuous standstill torque of 0.60 Nm without exceeding thermal limits. High-speed operation is supported by a nominal velocity of 10,000 rpm, which helps shorten cycle times during rapid indexing and short strokes. A centering diameter of 40 mm supports concentric mounting on precision gearboxes, and standard balancing helps limit residual vibration during rotation. Power and feedback conductors leave from the right side through a connecting cable with a coupling unit that supports strain relief. The keyway shaft transmits torque directly, and the single-ended shaft layout leaves no secondary shaft end. That arrangement supports direct coupling to small transmission elements without adding unnecessary overhung hardware.

Position data come from an integrated absolute encoder, and resolver feedback is also available for drive commutation. This feedback arrangement gives the controller immediate rotor position information at startup and stable electrical alignment during acceleration. Oil ingress is blocked by a dedicated shaft seal, helping protect the internal feedback components and windings in splash-zone installations. The sealed output area also helps the motor tolerate lubricant mist and incidental fluid exposure around the driven machine section. Because the motor is supplied without a blocking brake, holding torque must be provided by the drive or by external mechanics when power is removed. The motor uses standard housing surfaces and pairs with compact Indramat servo amplifiers for digital control.