The most important difference and advantage of ISM grain separators which allows achieving high economy, is the airflow generator. The large impeller is attached to the engine axle, that is, fan impeller enclosed in the pipe. Impeller blades well calculated by aerodynamic properties direct air flow directly into separation chamber. There are no unnecessary obstacles to the air flow. All air flow, the engine passes through itself, so it does not need additional cooling. The most important feature of our grain separators is
that the power of the air flow is controlled not by dampers, as in machines with centrifugal fan, but by the speed of impeller rotation. The engines of ISM grain separators have programmable frequency converters, with the help of which it is possible to adjust more accurately the separation process for any agricultural crop.