Product Description:

The MKE118D-027-NP3-KUN is a synchronous servo motor produced by Bosch Rexroth Indramat within the MKE Synchronous Motors series. It is intended for positioning axes in hazardous areas where ignition-safe operation is required. A UL/CSA-compliant housing and an IP65 enclosure allow direct installation on machinery, while the terminal box is mounted on top of the stator for straightforward wiring. The motor also includes a built-in holding brake rated at 70 Nm to secure vertical loads when the control amplifier is de-energized. This arrangement supports machine-mounted use where sealed construction and reliable load holding are both important.

At a 60 K winding temperature rise, the motor delivers 48.0 Nm of continuous standstill torque and draws 22.1 A RMS current during steady operation. These values are relevant when the motor must hold load at zero speed or operate continuously at very low speed. For short overload periods, output can rise to 187.0 Nm with a corresponding phase current of 99.6 A, so the connected drive and cabling must accommodate these peaks. The motor has a torque constant of 2.52 Nm/A, showing the relationship between phase current and torque output. A winding resistance of 0.350 Ω, an inductance of 5.70 mH, and a discharge capacitance of 20.2 nF influence current response, drive behavior, and EMC filtering.

In dynamic operation, the rotor has a moment of inertia of 0.03620 kg·m² and can reach a maximum mechanical speed of 3000 rpm. The back EMF is given as 154.5 V per 1000 rpm at 20 °C, which describes the voltage generated as rotational speed increases. Permissible ambient operating temperature is 0 to +40 °C, and a shaft seal on the DIN 6885 keyway shaft helps limit dust and water ingress. The motor uses winding code 027, F-class insulation, and a top-mounted terminal box. Its acoustic emission is 61.1 dB[A], and its mass without the brake is 65 kg.