Industrial Purpose Forage Harvester is used for harvesting green fodder and grass in order to feed the animals directly or for making silage. The Harvester comes designed with free floating knives on the rotor that prevents the damage to the machine when they hit a hard material like stones in the field. The Industrial Purpose Forage Harvester has the feature that the height adjustment can be easily controlled by the spring controlled adjusting pin on the chassis and has an automatic attachment between chassis and machine in order to connect the machine to the chassis easily by the driver of the tractor.