MS2M04-A0FNN-KMDL1 by Bosch Rexroth Indramat

The Bosch Rexroth Indramat MS2M04-A0FNN-KMDL1 synchronous servo motor belongs to the MS2M Ultra Compact Motors series. As an ultra-compact rotary actuator, it provides closed-loop motion for axes where cabinet space and weight are restricted. In automated assembly lines, pick-and-place stations, or packaging machinery, the motor converts electrical energy from a drive into precise torque and speed for coordinated positioning across multi-axis systems. Its compact format also suits moving axes where excess motor mass can reduce acceleration and add load to the mechanics.

The motor delivers 0.75 kW at a nominal speed of 3000 rpm and produces continuous shaft torque of 2.39 Nm while drawing 4.1 A (rms). With a torque constant of 0.59 Nm/A(rms), the drive can relate phase current to output torque in a direct way. A stator inductance of 5.10 mH helps moderate current rise and reduce switching ripple. The motor uses five pole pairs and an optical 23-bit encoder that accepts a 4.75-5.25 V supply and can report single-turn or multi-turn position. The winding is rated for 3000 rpm, and the voltage constant of 20.7 V/1000 rpm provides the back EMF used by the drive for speed regulation.

Transient demands can be met with a peak torque of 7.16 Nm and a maximum phase current of 12.3 A (rms), which supports rapid indexing and short acceleration periods. An electrically released brake energized at 24V DC secures the axis during shutdown, and M17 SPEEDCON quick-lock connectors simplify installation with the double-shielded metal lead set. Natural convection cooling eliminates external fans, while the die-cast housing carries an IP65 rating against dust and water jets. The keyed shaft is supplied without a sealing ring to reduce drag on the low-inertia rotor, and sound pressure remains at 65 dB(A). Operation is permitted from 0 to 40 °C, and the compact frame size 4 with length code A helps conserve space in tightly packed machine layouts.