Product Description:

The MKE118D-027-HG0-KUN synchronous servo motor is produced by Bosch Rexroth Indramat within the MKE Synchronous Motors series. It is intended for use in potentially explosive areas, allowing motion-control tasks in hazardous zones of industrial automation. The unit serves as the prime mover in drive systems that require precise speed and torque regulation under zone-rated operating conditions.

This model is designed for ambient temperatures from 0 to +40 °C, and its connections exit at the top into a terminal box for armored conduit entry. At a 60 K winding rise, it sustains a continuous current of 22.1 A and produces a continuous standstill torque of 48.0 Nm. Discharge capacitance is 20.2 nF, which helps limit common-mode noise toward the drive. The motor is supplied without a holding brake, uses Class 155 F insulation, and has an IP65 enclosure that helps protect the winding from heat, dust, and water ingress. For dynamic events, the winding can accept a maximum current of 99.6 A and deliver a peak torque of 187.0 Nm up to a top speed of 3000 rpm. Stator package 027 has a resistance of 0.350 Ω at 20 °C and an inductance of 5.70 mH, while a plain shaft with a frontal centering hole, a DIN 332 DS thread, and a fitted shaft seal supports mechanical coupling and sealing. The housing also meets UL/CSA construction requirements.

The rotor’s moment of inertia is 0.03620 kg m², which supports predictable acceleration with a torque constant of 2.52 Nm/A. The back EMF constant is 154.5 V/min⁻¹, matching drive controllers that rely on sinusoidal commutation. Without a holding brake, the motor mass is 65.0 kg, which helps stabilize mounting frames and reduce vibration. Acoustic emission is limited to 61.1 dB[A] ±3, allowing use near personnel without exceeding common factory noise thresholds.