Abstract: A track system for traction of a vehicle that is connectable to an axle of the vehicle and includes a track and a track-engaging assembly for driving and guiding the track around the track-engaging assembly. The track-engaging assembly includes a drive wheel for driving the track, idler wheels for contacting a bottom run of the track, and a bogie carrying the idler wheels. The track system includes a transmission for transmitting power from the axle of the vehicle to the drive wheel such that a rotational speed of the drive wheel is different from a rotational speed of the axle of the vehicle. The track system includes a connector disposed between the transmission and the bogie such that the bogie is movable (e.g., pivotable) relative to the transmission. The connector may be disposed below an output shaft of the transmission.

Abstract: A track unit for ground work vehicle, which comprises a structure for supporting a driving wheel that transmits motion to a ground resting track; the track unit is designed to be mounted as an alternative to a wheel at the end of at least one axle of the work vehicle that is provided with a motor drive unit designed with such characteristics as to give the machine correct values of the transmission ratio, i.e., of the travel speed in the configuration in which wheels are mounted at the ends of the axle; the track unit further comprises a speed-increasing gear system interposed between a hub, designed to be connected to a flange of the axle of the work vehicle, and the driving wheel that moves the track.