MKE118B-058-DP1-KE4 Bosch Rexroth Indramat
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MPN: R911308971
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The Bosch Rexroth Indramat MKE118B-058-DP1-KE4 is part of the MKE Synchronous Motors series and is designed for potentially explosive areas. This servo motor features a continuous torque at standstill of 28 Nm and a maximum torque of 102 Nm. It includes an optical multiturn absolute encoder with 2,048 increments and has a holding brake with 32 Nm torque.
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Product Description:
The MKE118B-058-DP1-KE4 is a servo motor for potentially explosive areas produced by Bosch Rexroth Indramat in the MKE Synchronous Motors series. It provides closed-loop speed and position control for pumps, mixers, and conveyors installed in hazardous zones where ignition protection is required. With an integrated holding brake and multiturn feedback, the unit maintains shaft position during process interruptions and restarts without manual referencing, simplifying automated sequences in chemical and paint lines.
The motor delivers a continuous shaft torque of 28.0 Nm at a 60 K winding temperature rise while drawing 28.4 A of continuous current at standstill. With winding 058, the electrical parameters include a resistance of 2.20 Ω at 20 °C, an inductance of 0.170 mH, and a capacitance of 10.3 nF; these values influence current rise time and drive sizing. The permissible top speed reaches 4500 rpm, and the housing meets ATEX requirements so the stator surface remains within ignition limits. Mechanical response is influenced by a rotor inertia of 0.01940 kgm², allowing stable control when large loads are coupled. Power and signal leads enter through a 13.0 mm to 16.0 mm cable gland on the top-mounted terminal box, matching the specified connection direction.
For dynamic events, maximum torque reaches 102.0 Nm with a permissible phase current of 127.6 A. The integrated holding brake supplies 32 Nm to secure stationary axes during power loss, and the torque constant is 1.15 Nm/A at 20 °C. Back electromotive force is 70.0 V per 1000 rpm, aiding drive sizing. Thermal limits follow a 0 to +40 °C ambient range and Class 155 F insulation, while a shaft seal protects the DIN 6885 keyway shaft from fluid ingress. The M2 optical multiturn encoder delivers 2,048 increments through EnDat 2.1 for absolute positioning feedback. Additional figures include a 45 kg motor mass and a 61.1 dB[A] sound pressure level, both relevant for mechanical integration and workplace noise assessments.
