Product Description:

The MKE047B-144-CG0-BENN belongs to the MKE Synchronous Motors series produced by Bosch Rexroth Indramat. It is a synchronous servo motor designed for potentially explosive atmospheres where precise speed and position control are required while meeting strict safety requirements. In automation cells that handle flammable gases or dust, the motor drives actuators and rotary axes with closed-loop feedback so machinery can maintain process accuracy without introducing ignition sources, and the connected drive can correct motion deviations as load conditions change. This makes the motor suitable for enclosed process equipment that still requires accurate indexing and repeatable motion.

Cabling and feedback are arranged on the B-side of the housing, and power conductors terminate in a sealed terminal box suited for field wiring. Internally, winding code 144 is matched to four pole pairs, and the resulting electrical geometry aligns with the rotor’s 4 pole pairs for balanced torque. Position data come from encoder model M1, which provides 128 increments per revolution. Because the sensing element is a multi-turn absolute Hiperface optical encoder, the drive retains multi-revolution position after power loss and can resume axis control without a full homing cycle. The sealed connection layout helps keep wiring contained at the motor housing in areas where exposed contacts are undesirable. A shaft seal is fitted to limit ingress when the motor is used with pressurized enclosures.

The cast housing meets ATEX construction criteria, so surface clearances and internal energy limits satisfy zone-rated installation. Class 155 (F) insulation supports coil temperatures up to 155 °C, helping the winding tolerate elevated ambient heat and enclosure pressure. A plain shaft with a front centering hole provides direct coupling to gear stages, while the DIN 332 DS thread allows extraction when the coupling must be removed. The front centering feature also helps align the shaft with connected transmission parts during installation. The motor comes without an integral brake, so stopping and holding functions must be handled by the servo drive or external mechanics.