Product Description:

The MKE047B-144-CG1-BUNN is a servo motor for use in potentially explosive zones, produced by Bosch Rexroth Indramat within the MKE Synchronous Motors series. In industrial automation, it supplies controlled rotary motion to actuators and conveyors while supporting accurate positioning in regulated hazardous areas. This makes it suitable for equipment used in paint booths, solvent processing lines, or grain handling plants where ignition protection is required. The aluminum enclosure follows UL/CSA construction rules for equipment installed in North American classified locations, and its thermal endurance is set by 155 (F) insulation so the windings can reach elevated temperatures without damage.

Power and feedback leads exit on the B-side and terminate in a terminal box, which simplifies armored cable entry for hazardous-area wiring. Inside the housing, winding code 144 sets the motor’s thermal and impedance profile, and four pole pairs establish the synchronous torque pattern. Position data are generated by an optical encoder that delivers 128 usable increments per revolution. This resolution is paired with the M1 sensor option so the drive can index small angular steps without dithering. Absolute position is retained through power cycles by the Multiturn absolute Hiperface protocol, which removes the need for homing routines after a safety shutdown.

When line power is removed, an integrated holding brake supplies 2.2 Nm of static torque to secure vertical or suspended loads. The motor uses a plain shaft with a frontal centering hole for direct coupling to gearboxes, and the frontal geometry helps keep radial runout low for encoder accuracy. A shaft seal is present to help keep vapors out of the bearing cavity, and the DIN 332 DS thread in the shaft nose supports positive-drive tool attachment.