MKE118D-027-DG3-KE4 Bosch Rexroth Indramat
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MPN: R911401546
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The Bosch Rexroth Indramat MKE118D-027-DG3-KE4 is part of the MKE Synchronous Motors series and is designed as a servo motor for potentially explosive areas. It delivers a continuous torque of 48 Nm at standstill and a maximum torque of 187 Nm, with a maximum velocity of 3000 per minute. This motor features an IP65 rating, insulation class 155 (F), and weighs 65 kg without the brake.
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Product Description:
The MKE118D-027-DG3-KE4 is a servo motor produced by Bosch Rexroth Indramat for the MKE Synchronous Motors series and intended for potentially explosive areas. Its flame-proof aluminum housing meets ATEX requirements and carries an IP 65 rating, allowing operation in dusty or wet zones between 0 °C and +40 °C. A plain shaft with a frontal centering hole, a DIN 332 “DS” thread, and an integrated shaft seal support direct coupling without additional guards. Mechanical interfacing is through a terminal box positioned on the top of the frame, and the cable entry accepts glands from 13.0 mm to 16.0 mm. The unit weighs 65.0 kg and generates a sound pressure level of 61.1 ±3 dB[A] during nominal running.
Inside the stator a 027 winding with 0.350 Ω resistance at 20 °C and 5.70 mH inductivity is cooled to a 60 K temperature rise, allowing a continuous current of 22.1 A at standstill that in turn delivers 48.0 Nm of torque on the shaft. For dynamic peaks the drive may accept a maximum RMS current of 99.6 A and produce up to 187.0 Nm. Speed regulation extends to 3000 min⁻¹, while a discharge capacity of 20.2 nF helps to control high-frequency leakage currents. The optical multiturn EnDat 2.1 encoder, model M2, provides 2 048 increments per revolution for absolute position monitoring.
High-energy moves are converted with a torque constant of 2.52 Nm/A, and the back-EMF scales at 154.5 V per 1000 min⁻¹, easing drive parameterization. The laminated rotor carries 0.03620 kg·m² of inertia, balancing acceleration capability with smooth running. A spring-applied brake rated at 70 Nm secures the load when power is removed, an important feature for vertical axes in hazardous zones. Thermal endurance is defined by insulation class 155 (F); together with the sealed housing, these characteristics let machine builders combine precise feedback, powerful bursts, and reliable holding action within the permitted ambient range.
