MDD025A-N-100-N2K-040MB1
The MDD025A-N-100-N2K-040MB1 is a small-frame synchronous servo motor produced by Bosch Rexroth Indramat for the MDD Synchronous Motors series. Designed for digital drive controllers, it converts commanded current into precise torque and velocity for automated assembly stations, metering pumps, and light actuators. Its compact format suits small axes that need accurate starts, stops, and repeatable motion in limited installation space. Motor size 025 and length code A yield a short stator package that minimizes installed depth, while the standard housing enables direct panel or machine mounting without auxiliary shrouds.
It attaches to machinery through a centering pilot of 40 mm, securing radial location between the flange and coupled load. This diameter also matches common tooling plates, easing interchange between modular machine stages. Power and feedback conductors exit on side B, and the molded connector interface supports quick connection. This arrangement helps keep cable routing orderly in compact machine sections. During continuous stall, the motor supplies 0.33 Nm of torque so drive tuning can maintain position against static loads, and its rated rotor speed of 10000 rpm supports high-cycle indexing without gear reduction. Dynamic balancing keeps vibration within tolerance across this speed range, and an internal aluminum path directs heat to the external surface for stable winding temperature.
Position information is generated by the integrated absolute encoder, while phase alignment for commutation is handled by resolver feedback, giving the controller dual sensing options. A blocking brake is installed; it contributes 1.0 Nm of holding torque to keep the axis fixed during power removal. The keyed keyway shaft transfers torque positively and is supplied without a secondary side-B extension, simplifying coupling design. The motor is built without a shaft seal, so the installation must remain free of coolant spray, and the shaft end is standard for applications that do not need a drive-through configuration.
