Product Description:

The MKE118B-058-DG0-KE6 belongs to the MKE Synchronous Motors series from Bosch Rexroth Indramat. Designed as a servo motor for potentially explosive areas, it meets ATEX housing standards and operates within ambient temperatures from 0 to +40 °C. A terminal-box on the top of the frame provides power and feedback access, and the cable entry accommodates diameters between 17.0 mm and 19.5 mm. Motion feedback is supplied by an optical multiturn absolute EnDat 2.1 encoder with 2,048 increments, allowing position control without resetting during power cycles. The plain shaft includes a frontal centering hole and is protected by a shaft seal; the motor is supplied without a holding brake to simplify axial length in fan-driven zones.

Under a 60 K winding temperature rise the motor draws 28.4 A continuously at standstill while producing 28.0 Nm of steady torque. For rapid accelerations the current can climb to 127.6 A (RMS), delivering up to 102.0 Nm of peak torque at the shaft. The rated winding 058 and a low inductivity of 0.170 mH support fast current build-up, enabling speed ramps toward the mechanical limit of 4500 min⁻¹. Each of these limits is coordinated with a winding resistance of 2.20 Ω and a discharge capacity of 10.3 nF so that drive controllers can model thermal load accurately and apply field-oriented control without saturation.

A torque constant of 1.15 Nm/A links output torque to phase current, letting motion planners predict load response precisely. The rotor inertia is only 0.01940 kgm², which shortens acceleration times while remaining high enough to suppress speed ripple from the 61.1 dB[A] acoustic profile. Service crews handle a total mass of 45.0 kg, and F-class insulation rated at 155 (F) supports continuous operation close to the thermal envelope defined by the 0…+40 °C ambient range. Combined with an EnDat encoder model M2 and the DIN 332-compliant “DS” shaft thread, these parameters allow the motor to pair with explosion-protected gear stages and maintain stable torque delivery in pump, agitator, and conveyor zones.