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  • Users: alsostefan
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  1. alsostefan

    Under-loaded and cold ball-bearing extremely high friction?

    We're trying to find the cause of very high losses in a custom high-speed brushless motor. The losses occur at light/no load with a cold motor. As soon as the motor heats up to normal operating temperature (approx 80 deg case) all is good. The motor's rated speed is 12000 RPM (at 1kW)...

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