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How To Build A Rotary Drum Screen

May 12 2009nbsp018332my red rotary trommel shown is powered by a 14 hp 120 v induction motor the 55 gallon drum speed is about 27 rpm giving a screen surface speed of about 175 feet per minute use belts and pulleys to reduce the speed rather than reducing the motor speed electronically drill motors could be used but the motor needs speed to fan cool itself

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