Product Description:

The MKE118D-027-NG0-KUN is a servo motor for potentially explosive areas built by Bosch Rexroth Indramat within the MKE Synchronous Motors series. It meets UL/CSA housing requirements, operates between 0 and +40 °C, and uses a top-mounted terminal box for power and feedback routing. This arrangement keeps the connection path compact inside pressurized or flameproof cabinets and helps keep cable routing organized in confined enclosures. A plain shaft with a front centering hole and a DIN 332-compliant DS thread is sealed to limit gas ingress. The design omits a holding brake, so external locking devices can be selected for hazardous locations.

At standstill, the motor can deliver 48.0 Nm of continuous torque while drawing 22.1 A. This relationship follows a torque constant of 2.52 Nm/A set by winding code 027. Copper losses are moderated by a winding resistance of 0.350 Ohm and an inductance of 5.70 mH, while the 154.5 V/1000 rpm voltage constant influences commutation behavior and current rise. A discharge capacitance of 20.2 nF is also provided for matching drive-side bleeder networks. Thermal loading is evaluated at 60 K above ambient with Class 155 F insulation, and the 0.03620 kg·m² rotor inertia supports stable speed control during starts and low-speed operation.

For short bursts, the motor tolerates 187.0 Nm and up to 99.6 A, reaching a maximum speed of 3000 rpm. Protection against dust and water jets is rated at IP65, and the shaft seal supports that enclosure protection at the drive end. Operating noise remains near 61.1 dB[A], so the motor can be used in enclosed machinery without unusually high sound output. The 65.0 kg mass adds thermal stability during continuous duty, and a sound pressure tolerance of ±3 dB allows for installation-related variation. All external surfaces are paint-free to reduce ignition risk, and the top cable exit helps keep cable glands outside purge zones.