Product Description:

The MKE118B-058-AP1-KUN is a servo motor for potentially explosive areas manufactured by Bosch Rexroth Indramat and assigned to the MKE Synchronous Motors series. Within hazardous production zones, it converts drive current into controlled rotary motion for pumps, mixers, and handling axes. The motor is fitted with a DIN 6885 keyed shaft for direct coupling, an optical single-turn Hiperface encoder with 128 increments for feedback, and a spring-applied holding brake delivering 32 Nm so equipment stays fixed when power is removed.

The electromechanical output available in continuous duty is based on a standstill torque of 28.0 Nm. This value indicates the maximum load the shaft can hold indefinitely at the rated temperature rise of 60 K. To generate that torque, the windings draw a continuous current of 28.4 A. Each ampere applied produces approximately 1.15 Nm/A, a torque constant that simplifies drive tuning. When commanded to accelerate, the rotor can reach a mechanical speed of 4500 rpm. The compact winding with an inductance of 0.170 mH allows rapid current changes, enabling the fast dynamic response required in positioning tasks.

Peak performance values expand the operating range. The drive can supply a momentary torque of 102.0 Nm for short acceleration bursts, while the stator is rated to withstand an rms current of up to 127.6 A without thermal damage. The steel rotor’s inertia of 0.01940 kg·m² balances quick acceleration with smooth speed regulation. Overall mass reaches 45.0 kg, which helps support stable mechanical installation when the unit is flange mounted. The motor housing meets UL and CSA requirements, includes a shaft seal for ingress protection, and maintains Class 155 (F) insulation. Acceptable ambient temperature spans 0 to +40 °C, and cabling is routed upward through a terminal box located on the top of the frame.