Product Description:

The MKE098B-058-BP0-BUNN is a servo motor produced by Bosch Rexroth Indramat within the MKE Synchronous Motors series. Classified for potentially explosive areas, it supplies controlled mechanical power to positioning axes and coordinated drives in process plants where flammable gases may be present. The design combines a flameproof housing, UL/CSA compliance, a terminal box on the B-side, and an optical feedback system so automation controllers can command precise speed and torque in hazardous locations.

At standstill, the motor delivers a continuous torque of 12.0 Nm while drawing a continuous current of 12.4 A with a 60 K winding temperature rise, and these paired ratings set the thermal limit for sustained static holding. For short acceleration bursts, the drive can apply up to 43.5 Nm, provided the current does not exceed an RMS ceiling of 55.9 A. A permissible speed ceiling of 5000 rpm allows the unit to run fast spindle or roller stages without mechanical overspeed. Control tuning is simplified by a torque constant of 1.09 Nm/A, which links inverter output current to produced torque. The 058 winding, 5.80 Ω resistance, and 0.740 mH inductance influence current response, while the Class F insulation system supports thermal endurance.

System integration must also consider the ambient range and mechanical data. Operation is permitted from 0 to +40 °C, matching standard ventilation schemes in production halls. A rotor moment of inertia of 0.00430 kg·m² supports quick response to velocity commands while storing enough kinetic energy for stable rotation under load. With a mass of 18.0 kg, the motor requires a rigid mounting plate and produces a rated sound pressure of 61.8 dB(A). A voltage constant of 70.0 V/min⁻¹ is used when matching the motor to a drive. The single-turn EnDat 2.1 optical encoder supplies 2,048 increments, the keyed shaft and shaft seal support positive torque transfer and IP protection, and the design omits a holding brake to reduce length and inertia.