Product Description:

The MKE098B-058-CP1-BENN is a servo motor for potentially explosive areas produced by Bosch Rexroth Indramat within the MKE Synchronous Motors series. Its purpose in industrial automation is to deliver controlled rotary motion inside ATEX-rated zones. This allows drives, gear stages, or actuators to operate where flammable gases or dust may be present.

This model can supply a continuous torque of 12.0 Nm at standstill while drawing 12.4 A, values that indicate the load the motor can hold without overheating at a 60 K winding rise. A torque constant of 1.09 Nm/A links produced torque directly to drive current, helping the controller calculate setpoints. Peak thermal stress is limited by a maximum current of 55.9 A, and the copper windings have an inductance of 0.740 mH, which supports fast current rise times. The winding code 058, a resistance of 5.80 Ω at 20 °C, and a voltage constant of 70.0 V/1000 rpm further describe the electrical interface. Continuous duty is supported by Class F insulation and an ambient temperature range of 0 to +40 °C. Power enters through a terminal box on the B-side, and the shaft uses a DIN 6885 keyway with a shaft seal. An optical multi-turn Hiperface encoder, model M1 with 128 increments, feeds absolute position to the drive, while a holding brake rated at 11 Nm secures the load when the machine is idle. ATEX-compliant housing, a sound pressure level of 61.8 dB(A), and a discharge capacitance of 6.7 nF complete the operating range.

Dynamic moves rely on a maximum torque of 43.5 Nm and a top speed of 5000 rpm. The rotor moment of inertia is only 0.00430 kg·m², so acceleration can remain high even under conservative current limits. Overall mass stays moderate at 18.0 kg without the brake, which helps when the motor is mounted on mid-size indexing tables or gantry axes.