Product Description:

Bosch Rexroth Indramat manufactures the MKE118B-058-CP1-KE6 within its MKE Synchronous Motors series. This unit is a servo motor for potentially explosive areas. It provides closed-loop rotary motion in hazardous-zone process machines, packaging cells, and material-handling axes where flame-proof components are necessary.

The motor delivers a continuous standstill torque of 28.0 Nm from 28.4 A of steady current. Winding code 058 combines an inductance of 0.170 mH and a resistance of 2.20 Ω, supporting predictable current rise times. A torque constant of 1.15 Nm/A links drive output to phase current, and the voltage constant is 70.0 V min⁻¹, supporting back-EMF estimation. Maximum current reaches 127.6 A, and peak torque reaches 102.0 Nm. Rotor inertia of 0.01940 kg m² keeps acceleration responsive at speeds up to 4500 rpm. The optical multi-turn absolute Hiperface encoder supplies 128 increments per revolution to the controller, while a discharge capacity of 10.3 nF assists electromagnetic compatibility. Sound pressure stays near 61.1 dB[A] (±3), and the stator uses class 155 F insulation to tolerate thermal loads.

An ATEX-compliant housing, a permissible ambient range of 0 to +40 °C, and a shaft seal support operation in dust-laden or vapor-rich zones. Power and feedback cables exit through a top-mounted terminal box with a 17 to 19.5 mm cable gland, simplifying wiring. The keyed shaft follows DIN 6885 for slip-free coupling, and a holding brake rated at 32 Nm secures static loads during shutdowns. The optical multi-turn encoder supports position tracking, and the stated sound level reflects typical acoustic output during operation. The motor weighs 45.0 kg, so mounting hardware must accommodate that mass plus dynamic forces during high-torque events.