Product Description:

The MKE118D-027-AP3-KUN is a servo motor produced by Bosch Rexroth Indramat as part of the MKE Synchronous Motors series. Designed for use in potentially explosive areas, it supplies closed-loop rotary motion in hazardous process equipment where reliable speed and position control are required. The housing meets UL and CSA requirements and carries an IP65 protection rating, so airborne dust and directed water do not impair service. Power and feedback conductors enter through a terminal box on the top of the frame, which helps cable routing inside pressurized enclosures and keeps connections away from floor-level contaminants.

At a 60 K winding temperature rise, the motor maintains a continuous torque of 48.0 Nm while drawing a continuous standstill current of 22.1 A. For short-duty peaks, it can generate up to 187.0 Nm, and the mechanical output can reach 3000 rpm without overspeeding the windings. A torque constant of 2.52 Nm/A at 20 °C gives a linear relationship between commanded current and developed torque, which helps the drive respond predictably to load changes. This operating range suits mixers, indexing tables, and conveyor sections installed in classified zones.

Dynamic events are supported by a maximum RMS current of 99.6 A, giving the drive headroom for rapid acceleration or deceleration during short load changes. An integral holding brake secures the shaft with up to 70 Nm of static torque, which helps prevent drift during power loss or when the axis must remain fixed at a stop. The rotor’s low inertia of 0.03620 kgm² supports quick speed changes, and the overall mass of 65.0 kg helps the mounted assembly remain stable under vibration. The shaft uses a DIN 6885 keyway and a fitted shaft seal, and an optical single-turn Hiperface encoder with 128 increments supplies position feedback for closed-loop control.