Duty of the Windrower is to pile the grass, hay, straw and so on in to 1 row to make ready for baling.
Because it blocks rocks and other materials from entering in to the bale or silage. The silage or the bale becomes more healty and has higher nutricians in it. The power comes from the tractors PTO to the shaft then on to the transmission of the machine and from there to the arms which enables the arms to turn. On the machine there are 9 arms and 27 springs are connected...