Product Description:

The MKE118D-027-DG3-KUN synchronous motor is manufactured by Bosch Rexroth Indramat for the MKE Synchronous Motors series. Classified as a servo motor for potentially explosive areas, it provides closed-loop motion control on axes that must avoid ignition sources in paint shops, mixers, and other hazardous zones. The design combines flame-proof construction with absolute position feedback, allowing the drive controller to regulate speed and torque with stable response during positioning and continuous running. This arrangement supports demanding industrial applications where accurate motion and hazardous-area protection are both required.

At standstill, the motor produces a continuous torque of 48.0 Nm while drawing 22.1 A with a 60 K winding rise. A Class F insulation system rated 155 (F) supports this load and is intended for ambient temperatures from 0 to +40 °C. Power and feedback conductors terminate in a terminal box on the top of the frame, and the housing is protected to IP65. Winding code 027 gives 0.350 Ω resistance and 5.70 mH inductance, along with a torque constant of 2.52 Nm/A and a discharge capacitance of 20.2 nF. Position feedback uses an optical multi-turn absolute EnDat 2.1 encoder, model M2, with 2,048 increments per revolution. The motor also uses a plain shaft with a frontal centering hole, DS thread, and a shaft seal, and its sound pressure level is 61.1 dB(A).

Dynamic peaks are handled through a maximum RMS current of 99.6 A, which allows the motor to reach up to 187.0 Nm and a maximum speed of 3000 rpm before field weakening is required. Rotor inertia is 0.03620 kg·m², which helps moderate acceleration behavior during changing load conditions. A 70 Nm holding brake secures the load when power is removed, and the weight without the brake is 65.0 kg. The voltage constant of 154.5 V/min⁻¹ helps match the motor to a compatible drive, while the explosion-rated construction supports use in hazardous operating areas.