Product Description:

The MKE118B-058-DG0-KUN is a servo motor engineered by Bosch Rexroth Indramat for use in hazardous-location automation. It belongs to the MKE Synchronous Motors series and is intended to drive machinery in potentially explosive areas where electrical equipment must meet strict safety codes. The model uses an optical multi-turn EnDat 2.1 encoder with type M2 feedback and 2,048 increments for absolute position feedback. It is supplied without a holding brake, so load retention during power-off conditions must be provided by drive torque or an external mechanical device.

At standstill, with a 60 K winding temperature rise, the motor can deliver 28.0 Nm of continuous torque while drawing a steady 28.4 A of current. During operation, it can reach a mechanical speed of 4500 rpm, and each ampere of phase current produces torque according to a constant of 1.15 Nm/A. Thermal endurance is supported by an insulation system rated to 155 (F), and the rotor's low inertia of 0.01940 kgm² supports fast acceleration and precise speed control. These characteristics suit closed-loop control in pumps, agitators, and material-handling axes that must maintain steady output with moderate thermal rise.

For transient load surges, the motor can furnish a peak torque of 102.0 Nm while the drive supplies up to 127.6 A RMS, making it suitable for startup or indexing cycles that briefly exceed continuous ratings. A mass of 45.0 kg gives the motor a rigid structure, and the plain shaft includes a DIN 332 DS center thread and a shaft seal to limit contaminant ingress. The terminal-box connections are routed from the top of the housing to simplify vertical cable runs, and UL/CSA compliance supports use in North American installations. Ambient operating limits of 0 to 40 °C and a sound pressure level of 61.1 dB[A] make the motor suitable for controlled indoor environments without additional acoustic shielding.