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Brushless motor is designed for the toughest operating conditions

04 November 2010

Described as the most robust motor maxon has ever produced, the electrically commutated EC22 HD was originally designed to drive downhole technology at depths of around 5,000m, in boreholes up to seven miles long. The new motor boasts entirely new concepts of rotor manufacture, and has been tested successfully at temperatures as high as 240°C and under atmospheric pressure conditions from high vacuum to 1,700bar.

The new EC22 HD can also operate while fully submerged in oil; trebling its initial 80W output rating because of improved heat dissipation, to deliver 240W from its 22mm-diameter frame. Moreover, it has been proven to withstand vibration of up to 25grms and resist impulse and impact forces of 100G: 50 times that undergone by maxon’s motors in Formula 1 cars.

Although developed to perform critical actuation functions in downhole tools, maxon believes the new motor’s capabilities will quickly make it a firm favourite with design engineers in all manner of industries where reliability is essential. An efficiency rating of 88% in air (over 70% in oil) also make the EC22 HD particularly suitable for battery-powered technologies.

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