Forage Harvester is used for harvesting every kind of green fodder and grass in order to feed the animals directly or for making silage. The free floating knives on the rotor are specially de-signed in order to prevent the damage to the machine when they hit a hard material like stones in the field. The rotating speed of the rotor and knives create the blow needed to blow the cut grass to the trailer. The height adjustment can be easily controlled by the spring controlled ad-justing pin on the chassis.