Abstract: A track-type tractor comprises a pair of track roller frames disposed on either side thereof and an endless track entrained about each frame to engage a plurality of longitudinally spaced track rollers. Each roller is rotatably mounted on a shaft having a bracket attached on each end thereof and each bracket extends longitudinally between a pair of spaced support members secured to the frame. Retaining means, slidably supporting the ends of each bracket on the support members, cooperate with elastomeric cushioning means disposed between an outboard side of the bracket and the frame to permit slight universal movement of the bracket relative to the frame.