Product Description:

The Bosch Rexroth Indramat MKE118B-058-PG0-KE4 is a servo motor for hazardous locations in the MKE Synchronous Motors series. Its ATEX-rated housing permits installation in Zone-classified machinery where servo-controlled motion is required. The unit is supplied without a holding brake, so an external device must secure the load when power is removed. Power and feedback conductors exit through a terminal box on the top of the frame, which supports vertical cable routing. A plain shaft with a frontal centering hole, a DIN 332 DS thread, and a fitted shaft seal forms the mechanical interface to couplings or gearboxes.

At a 60 K winding temperature rise, the motor delivers a continuous torque of 28.0 Nm while drawing 28.4 A. These values describe the steady operating point used when matching the motor to a drive. For short periods, the inverter may supply up to 102.0 Nm and a peak RMS current of 127.6 A during rapid acceleration. A torque constant of 1.15 Nm/A links motor current to mechanical output, and the low winding inductance of 0.170 mH supports fast current response. The motor uses insulation class 155 (F) and is permitted to operate in ambient temperatures from 0 to +40 °C. The 058 winding variant has 2.20 Ω of resistance, a voltage constant of 70 V/1000 rpm, and a discharge capacity of 10.3 nF. Under nominal load, the motor emits 61.1 dB(A) ± 3.

Maximum speed reaches 4500 rpm, supported by a rotor inertia of 0.01940 kgm² that balances dynamic response with smoother load behavior. Total mass is 45.0 kg, which is important when the motor is mounted on slide rails or cantilevered axes. The cast end bell accepts cable glands from 13.0 mm to 16.0 mm in diameter, allowing direct routing of shielded leads without adapters. This layout suits hazardous-area conveyors, pumps, and mixer drivetrains where sealed cable entry and stable shaft coupling are required.