Product Description:

The MKE118B-058-FP1-KE0 is a synchronous servo motor manufactured by Bosch Rexroth Indramat within the MKE Synchronous Motors series. Designed as a servo motor for potentially explosive areas, it supplies regulated torque and speed to industrial axes that must meet ATEX safety requirements in chemical, paint, or grain-handling plants. Its housing complies with these standards, while the insulation system is rated to class 155 (F), supporting reliable operation at ambient temperatures between 0 and +40 °C.

At a 60 K stator temperature, the motor can produce a continuous shaft load of 28.0 Nm while drawing a steady current of 28.4 A. Each ampere produces roughly 1.15 Nm/A, a torque constant that simplifies drive setup. For short accelerations, the current may rise to 127.6 A, enabling a peak torque capability of 102.0 Nm before thermal limits intervene. Winding code 058 corresponds to a resistance of 2.20 Ω at 20 °C and an inductance of 0.170 mH, values that influence current ripple and drive bandwidth. The 10.3 nF discharge capacity must be considered when sizing output filters. Heat is removed through the aluminum stator body, and the top-mounted terminal box helps route power and feedback leads away from accumulating contaminants.

The motor reaches a maximum mechanical speed of 4500 rpm and uses a built-in holding brake that applies 32 Nm when power is removed. Dynamic response is supported by a rotor moment of inertia of 0.01940 kg·m², which balances fast acceleration with load stability. A keyed shaft manufactured to DIN 6885, a fitted shaft seal, and the terminal-box connection simplify mounting in gearboxes while maintaining IP protection. Operating noise is limited to 61.1 dB(A) ±3. The motor weighs 45.0 kg without the brake and carries its windings inside an ATEX-certified enclosure to keep ignitable dust or gas from contacting live parts.