Product Description:

The MKE118D-027-PG0-KE4 is a three-phase synchronous servo motor manufactured by Bosch Rexroth Indramat and supplied within the MKE Synchronous Motors series. Designed for motion control in potentially explosive areas, the motor uses an ATEX-compliant housing and is sealed to IP65. It has a plain shaft with a frontal centering hole and a DIN 332 DS thread for fixture extraction. The terminal box faces upward and accepts cable glands from 13.0 mm to 16.0 mm. Reliable operation is permitted at ambient temperatures from 0 °C to +40 °C.

At standstill and with a 60 K winding temperature rise, the motor can deliver 48.0 Nm of continuous torque while drawing 22.1 A of continuous current. The 027 winding code corresponds to electrical values that include a winding inductance of 5.70 mH and a resistance of 0.350 Ω at 20 °C, and these values affect current rise time and copper losses. When driven by a suitable inverter, the motor can reach speeds up to 3000 rpm, giving it the range needed for indexing axes. Rotor inertia is 0.03620 kg·m², and the insulation system uses class 155 F for thermal endurance. A shaft seal helps limit oil migration into the bearing chamber, and the discharge capacity is 20.2 nF to help control common-mode currents between the windings and the frame.

Short-term load surges can be handled with a peak torque of 187.0 Nm when the inverter delivers up to 99.6 A RMS. The electromagnetic design yields a torque constant of 2.52 Nm/A and a voltage constant of 154.5 V/min⁻¹, and these values are useful for current loop adjustment and DC bus sizing. Because the motor is supplied without a holding brake, any static load must be secured by external means. Sound pressure at rated speed reaches 61.1 dB(A) ±3 dB, and the 65.0 kg mass helps support thermal stability during prolonged motion cycles.