Product Description:

The MKE047B-144-KG1-AUNN belongs to the MKE Synchronous Motors series produced by Bosch Rexroth Indramat. It is a servo motor for potentially explosive areas where precise closed-loop motion control must coexist with hazardous atmospheres. By combining flameproof construction with standard servo feedback, the unit drives valves, mixers, or positioning tables in chemical, paint, and gas-handling installations that require regulated torque and speed under strict safety codes. This layout lets the drive maintain repeatable positioning and controlled acceleration in process equipment where open-loop motors would be unsuitable.

Power and feedback conductors exit on the A-side, so the cable run can remain compact and shielded. The stator is accessed through a terminal box, which allows rigid conduit entry instead of molded connectors. That arrangement suits fixed plant wiring and helps protect cable entries from accidental movement. A holding mechanism rated at 2.2 Nm keeps the load stationary when power is removed, which is useful on vertical axes that might drift. The cast housing carries UL/CSA approval for North American classified locations, and the windings use class 155 (F) insulation so the coil temperature can rise to 155 °C without damaging the varnish system.

Four magnetic pole pairs provide a synchronous field count of 4, which gives finer torque production across the speed range than a two-pole design. The rotor uses a plain shaft with an integral shaft seal to help limit vapor ingress at the output end. The shaft arrangement also suits coupled drives that must limit leak paths at the machine interface. Machining includes a DIN 332 'DS' thread and a frontal centering hole, which support accurate alignment in explosion-proof housings and aid controlled extraction during service. Winding code 144 matches the associated drive to the motor's electrical values so current regulation remains within the permitted thermal range.