Product Description:

The MKE118B-024-AP0-KE6 is a servo motor for potentially explosive areas manufactured by Bosch Rexroth Indramat as part of the MKE Synchronous Motors series. Its flame-proof enclosure complies with the ATEX housing standard, so it can operate in areas where combustible gases are present. Power enters through a terminal box positioned on the top of the frame, and cable glands from 17.0 mm to 19.5 mm fit the entry port. The motor operates within an ambient range of 0 °C to +40 °C, emits 61.1 dB[A] of sound pressure, and uses a shaft with a DIN 6885 keyway and a shaft seal. It is supplied without a holding brake, so external mechanisms must secure the load when power is removed.

The electromagnetic parameters support continuous duty. At a winding temperature rise of 60 K, the unit delivers 28.0 Nm of standstill torque while drawing 15.3 A of current. With winding code 024, copper loss is influenced by a resistance of 7.60 Ω and an inductance of 0.580 mH, and these values affect current rise time and drive tuning. A torque constant of 2.12 Nm/A links commanded current to shaft torque, and the motor back EMF follows a voltage constant of 130 V per 1000 rpm. Transient events can be supplied with 69.1 A RMS, and the 10.3 nF discharge capacity helps direct common-mode currents away from the bearings. Thermal endurance is supported by insulation class 155 F. Position feedback is issued by an optical single-turn Hiperface encoder, model S1, which offers 128 increments.

Dynamic headroom supports applications that need intermittent surges. The motor can reach 102.0 Nm of peak torque and shaft speeds up to 4000 rpm, enabling short positioning cycles without saturation. A rotor inertia of 0.01940 kg·m² tempers rapid reversals so the controller does not overshoot. The frame weighs 45.0 kg, giving thermal mass that delays temperature rise during brief overloads.