Product Description:

The MKE118D-027-DG0-KE6 servo motor is produced by Bosch Rexroth Indramat for the MKE Synchronous Motors series. Designed for potentially explosive environments, the unit serves as a drive element that converts electrical energy into controlled mechanical rotation in process lines and machine tools. It features an ATEX-compliant housing, a plain shaft with a frontal centering hole, and connections routed through a top-mounted terminal box. The motor is supplied without a holding brake, so external braking must be provided where required.

At standstill and with a 60 K winding temperature rise, the motor can deliver a continuous torque of 48.0 Nm, which is the mechanical load the axis can hold indefinitely without overheating. To sustain that torque, the winding must be supplied with a continuous current of 22.1 A, which helps determine suitable inverter sizing. The torque constant of 2.52 Nm/A means each ampere of phase current produces roughly two and a half newton-meters of torque. A top speed of 3000 rpm permits use in high-throughput spindles and conveyors, while the winding inductance of 5.70 mH influences current ripple and drive matching. The optical multi-turn EnDat 2.1 encoder with 2,048 increments supplies absolute position feedback to the controller.

For intermittent peaks, the motor handles a maximum torque of 187.0 Nm, allowing short bursts for acceleration and cutting cycles. Such events can draw up to 99.6 A RMS, so drive modules must accommodate this surge without tripping. Protection against dust ingress and low-pressure water jets is provided by an enclosure rating of IP 65, and the ATEX housing supports use in ambient temperatures from 0 to 40 °C. Dynamic response is influenced by a rotor inertia of 0.03620 kgm², which balances load coupling stiffness with smooth speed changes. Additional features include a DIN 332 DS threaded shaft end, a shaft seal for oil retention, and a discharge capacity of 20.2 nF that helps reduce bearing currents.