Track Roller, is excavator bulldozer chassis with one of the four area, its main function is to support tractor attachments and the weight of the bulldozer, let tracked down the wheels forward.

Track Roller the main structure: round body, a heavy axle, bushings, sealing ring, cultura related parts to form. Track Roller can be divided into a unilateral and bilateral track rollers heavy wheel; Excavator with track roller with a track roller with bulldozers, tractor attachments with a track roller general is black paint, bulldozers track rollers are usually yellow paint.