The EC-4pole 32 HD motors from maxon precision motors (Fall River, MA) are designed for operation in air or in oil (flooded in hydraulic oil). The power rating depends on the surrounding medium and amounts to 220W in air and, due to the much higher heat flow, 480W in oil. They are designed for ambient temperatures of more than 200 °C and atmospheric pressures of up to 1700 bar. The motors also withstand vibrations of up to 25 grms, as well as impacts of up to 1000 G.
The motors feature high efficiency (up to 89% in air and more than 80% in oil), making them suitable for use in battery operated applications. The motors are used in environments with extreme temperatures, subject to high vibration, or under ultra-high vacuum.
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