Product Description:

The MS2M03-B0FNN-KMDH0 is an ultra-compact synchronous motor produced by Bosch Rexroth Indramat within the MS2M Ultra Compact Motors series. It serves as a direct-coupled rotary actuator for precision axes in industrial automation, delivering closed-loop motion when paired with compatible drive electronics and its integrated optical encoder. The motor uses frame size 3 with frame length B, relies on natural convection for cooling, and interfaces through M17 quick-lock SPEEDCON connectors for rapid installation in tight machine spaces.

During continuous duty, the motor operates at a rated speed of 3000 rpm while producing a steady torque of 1.27 Nm. That mechanical output is achieved with a rated current of 2.40 A and corresponds to a shaft power of 0.4 kW. The torque constant is 0.52 Nm/A, which shows the relationship between winding current and developed torque. A 23-bit optical encoder in single-turn or multi-turn form supplies high-resolution position feedback to the drive. Five pole pairs interact with stator windings optimized for 3000 rpm operation, and the double metal lead-wire cables support differential signals within the 4.75 to 5.25 V supply range. The unit remains within its thermal class between 0 °C and 40 °C ambient temperature and emits a sound pressure level of 65 dB(A) at nominal load.

Capacity beyond nominal operation includes a peak torque of 3.82 Nm that the axis can use for acceleration bursts when the inverter supplies up to 7.23 A rms. Electrical dynamics are influenced by a phase inductance of 9.80 mH and a phase resistance of 1.74 Ohm, which affect current rise time and copper losses. Low rotor inertia improves responsiveness, while the plain shaft without a shaft sealing ring simplifies coupling to precision gearheads. An IP65 housing protects against dust and water jets, the motor mass is 1.52 kg, and the design omits an internal holding brake.