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Maxon has developed a 22mm brushless motor in collaboration with the UK’s oil exploration industry that is said to offer high tolerances to shock, vibration and temperature.

The electrically commutated EC22 HD (heavy-duty) was originally designed to drive downhole technology at depths of around 5,000m, in boreholes up to seven miles long.

The motor introduces new concepts of rotor manufacture, along with a modular Hall-effect device.

A high-temperature test facility was constructed and extensive field trials undertaken to ensure total reliability under the most extreme operating conditions.

The resulting heavy-duty version has been tested successfully at temperatures as high as 240C and under atmospheric pressure conditions from high vacuum to 1,700 bar (25,000psi).

The redesigned motor 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.

The EC22 HD can 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.

‘Although developed to perform critical actuation functions in downhole tools, Maxon believes the motor will be used by design engineers in all manner of industries where reliability is essential,’ said Paul Williams, Maxon senior sales engineer.

‘An efficiency rating of 88 per cent in air and more than 70 per cent in oil make the EC22 HD particularly suitable for battery-powered technologies,’ he added.

maxon motor is the world’s leading supplier of high-precision drive systems.

maxon has earned a reputation for constant innovation and unflinching reliability – seeing the company’s products used by the world’s top engineers in fields as demanding as space exploration, formula 1 racing and sub-sea applications.

The maxon product range is developed on a modular basis, giving literally hundreds of thousands of perfectly compatible motor, gear and controller combinations to suit a huge array of applications. With full customisation possible for almost every product, maxon’s experienced sales engineers are on-hand to assist design engineers select precisely the right solution for their needs.

DC motors with ironless winding and flat motors (up to 500W output power, mechanical and electronic commutation).
Planetary, spur and special gears.
Sensors (encoders, DC tachos, resolvers).
Servo amplifiers, position controllers.
High-tech CIM and MIM components.
Customer specific drive solutions.

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