A tractor having isodiametric wheels with a simplified structure and maintenance

An isodiametric tractor with a simplified structure and maintenance comprising a supporting chassis (105,305), a front axle (125) and a rear axle (130) for pairs of front and rear wheels (120), wherein two front wheels (120) are driving wheels and activated by an engine (115) with the interpositioning of a differential (165) and wherein transmission means for transmitting the motion from the engine (115) to the pair of wheels (120) are entirely contained in the chassis, wherein, in addition, each wheel (120) of the front axle (125) is connected to the chassis (105,305) and/or to a differential casing (165) by a respective articulated system, the tractor envisaging that said engine (115) is cantilever-fixed to a front end of the chassis and the articulated system of the two wheels (120) of the front axle (125) comprises a common bar (155), centrally articulated (in C) to an upper part of said chassis (105,305) and which acts as a connection and constraint of each wheel (120) so that the articulated system of one wheel is compelled to move and become deformed contrarily and symmetrically with respect to the articulated system of the opposite wheel (120), allowing each wheel (120) to move in a substantially vertical direction with respect to the chassis (105, (305).