MDD025B-N-100-N2K-040MB1
The MDD025B-N-100-N2K-040MB1 synchronous servo unit is manufactured by Bosch Rexroth Indramat within the MDD Synchronous Motors series. It is used with digital drive controllers and acts as the rotary actuator in closed-loop positioning axes found on pick-and-place modules, gantries, and packaging machinery. The 025 frame size and B length create a compact profile that integrates easily into tight layouts, while the standard housing protects the stator without adding bulk. Its intended role is to convert drive commands into high-speed mechanical rotation for automated production lines. The small frame also helps when several motion axes must be installed close together on the same machine section.
It reaches a nominal speed of 10000 rpm, allowing rapid index cycles when paired with matching inverters. At standstill, the electromagnetic system can deliver 0.60 Nm of continuous torque, and a blocking brake rated at 1.0 Nm maintains position once power is removed. This brake is useful when the axis must remain fixed during a controlled stop or after shutdown. Motor centering is achieved through a 40 mm pilot diameter that aligns the flange with downstream machinery. Electrical power and feedback enter through a connector on side B, which helps simplify cable routing in compact cabinets. The cable exit is opposite the load side, which helps keep adjacent moving parts clear during operation.
Position tracking is supported by an integrated absolute encoder, while separate resolver feedback lines supply analog phase information for compatible drives. This combination allows the drive system to monitor rotor position and support stable speed control across a wide operating range. The rotor follows standard balancing tolerances so vibration remains low even at high speed. The motor uses a keyway shaft arrangement, and the shaft is supplied without a side B extension to conserve axial space. Because the motor is assembled without a shaft seal, it is best used in clean areas or with external protection when fluids are present.
