4. MACHINE DESCRIPTION64.1 GENERAL DESCRIPTIONThe fertilizer spreader with centrifugal distribution is a machinefor agriculture that spreads in the field solid mineral fertilizer ingranular and powder form. It is pulled by and coupled to the tractorby three points.The fertilizer spreader consists of:● A bearing chassis● One hopper designed to contain the product to be spread● Distribution components, driving and adjustment componentsIn the front side, the machine is equipped with a couplingstructure with three coupling points to the tractor.The hopper in metal sheet has a truncated conical shape.The fertilizer contained in the hopper goes through the dispenserand, due to gravity, falls on the distributor - spreader system.The dispenser is equipped with hydraulic controls toopen and close.The amplitude of the dispenser opening is manually, adjustedwith a lever whose position is fixed on a knob.The distributor - spreader system consists of two horizontaldiscs with rotational motion; on their upper surface is a seriesof straight radial fins designed to distribute the product by meansof centrifugal force.