Product Description:

The MKE118B-058-CP1-KUN is a three-phase servo motor manufactured by Bosch Rexroth Indramat for the MKE Synchronous Motors series. It is intended for use in potentially explosive areas, where closed-loop motion is required while ignition risks must be minimized. The flameproof housing meets UL/CSA requirements, and the integrated holding brake helps retain the load during power loss. By converting electrical energy into regulated rotary output, the motor can drive mixers, conveyors, and filling stations in paint shops, chemical processing cells, and other hazardous installations.

At a 60 K stator rise, the motor delivers a continuous torque of 28.0 Nm while drawing 28.4 A. During acceleration bursts, it can accept up to 127.6 A and produce a peak torque of 102.0 Nm. The mechanical limit speed is 4500 rpm, so the drive system must keep the rotor below that speed. Winding code 058 corresponds to 0.170 mH of inductance and 2.20 Ω of phase resistance, which influence current response and copper losses. A voltage constant of 70 V per 1000 rpm indicates the back EMF that the drive must overcome. Top-mounted terminal box connections simplify cabling, and 10.3 nF of discharge capacitance helps reduce common-mode noise. Under load, the motor emits 61.1 dB[A].

The optical multi-turn Hiperface encoder, model M1, provides 128 increments per revolution, and the motor has a torque constant of 1.15 Nm/A. Rotor inertia is 0.01940 kg·m², which supports balanced response with medium-mass loads, and the holding brake supplies 32 Nm when power is removed. Operation is permitted from 0 to +40 °C, and insulation class 155 F protects the windings within that ambient range. The motor weighs 45.0 kg without the brake. It has a keyed shaft machined to DIN 6885 and a shaft seal to help block oil migration in dusty or wet service areas.