Global Pre-cleaners are designed to meet with demand of high capacity preclening for silo feeding. These rotary type precleaners are equipped with high volume unique aspiration system to remove vast majority of low-density particles such as chaff & dust, whereas heavy trash is separated in a chamber light particles & dust is exhausted through fan. Rotary screen is designed for easy changing of perforated screens of required openings. Also suitable cleaning device is provided on external surface of screens to keep screen clean for efficient cleaning operation, the machine is totally enclosed and constructed of sturdy quality material.