Product Description:

The MKE098B-047-DP0-BUNN is a servo motor for potentially explosive areas produced by Bosch Rexroth Indramat in its MKE Synchronous Motors series. Inside hazardous-location machinery, it transforms drive commands into controlled rotary motion for dosing screws, agitators, and positioning axes. Power, feedback, and protective earth conductors enter through a terminal box mounted on the B-side of the housing, allowing sealed conduit entry. By synchronizing with a compatible Rexroth controller, the unit supplies precise torque and speed to keep automated processes on set point even when ventilation is limited.

At a winding temperature rise of 60 K, the motor sustains a continuous stall torque of 12.0 Nm, generated by a phase current of 9.8 A. The torque constant is 1.41 Nm/A, while the induced back EMF follows the 91.0 V/min⁻¹ voltage constant used by the drive for field-oriented control. Dynamic applications can command shaft speeds up to 4500 min⁻¹ without derating. Operation is permitted between 0 °C and +40 °C, with class F insulation providing thermal headroom. Winding code 047 combines an inductance of 1.20 mH with a resistance of 8.400 Ω, and the 6.7 nF discharge capacitance affects current ripple and switching losses. An optical M2 multiturn EnDat 2.1 encoder supplies 2,048 increments per revolution. The shaft uses a DIN 6885 keyway, is protected by a shaft seal, and the UL/CSA-listed housing is supplied without a holding brake.

For short overloads, the motor can supply 43.5 Nm of torque while drawing up to 44.3 A RMS, enabling rapid index moves and quick stops on heavier loads. This short-term current reserve helps the axis handle acceleration peaks without reducing motion stability. A rotor inertia of 0.00430 kgm² keeps servo response stable yet responsive, and the total mass of 18.0 kg adds structural damping. Airborne noise is rated at 61.8 dB(A) ±3.