MS2M03-A0FNN-KMDH0 by Bosch Rexroth Indramat

The MS2M03-A0FNN-KMDH0 is an ultra-compact synchronous motor built by Bosch Rexroth Indramat as part of the MS2M Ultra Compact Motors series. It is intended to provide precise rotary motion for space-constrained automation axes, packaging machinery, and pick-and-place gantries. Its plain shaft couples directly to planetary gearboxes or timing pulleys, and the integrated optical encoder feeds high-resolution position data to the drive controller for closed-loop speed and torque regulation.

During continuous operation, the motor draws a rated current of 1.50 A from a control logic supply that must stay within 4.75 to 5.25 V. At that operating point, it delivers 0.2 kW of mechanical output while spinning at a nominal speed of 3000 rpm. The corresponding rated torque is 0.64 Nm, and overload events can reach up to 1.91 Nm. Heat generated by copper losses is dissipated through natural convection, so no external blower or liquid circuit is required. The frame size 3, length A housing keeps sound pressure at 65 dB(A) and supports quick-lock M17 SPEEDCON power and feedback connectors.

The servo characteristics are set by a torque constant of 0.42 Nm/A, a phase inductance of 13.90 mH, and a phase resistance of 2.78 ?, which affect current rise time and drive tuning. An IP65 enclosure shields the stator against dust and water jets, and the rotor's low inertia helps support rapid acceleration without overshoot. A 23-bit single-turn/multi-turn optical encoder supplies absolute position data, eliminating homing cycles after shutdown. There is no holding brake, so vertical axes must secure loads with the drive or external mechanics. The plain shaft is supplied without a sealing ring, and the operating temperature window of 0-40 °C supports stable magnetic properties within typical control cabinets.