Bulldozer track rollers is one of the four wheels of the chassis of crawler construction machinery, its main role is to support the weight of the bulldozer, so that the track along the wheel, and then complete the job. The bulldozer track rollers is usually painted yellow. It is composed of wheel body, supporting wheel shaft, shaft sleeve, sealing ring, end cover and other related parts.
Bulldozer track rollers body material generally 50Mn, 40Mn2, and other materials, the main process casting or forging, machining, and then heat treatment, the hardness of the wheel surface quenching to reach HRC45~52, in order to increase the wear resistance of the wheel surface. The processing accuracy of the track rollers shaft is relatively high, and generally requires CNC machine tools to process in order to meet the requirements. The material is more than 40Mn2, and the quenching heat treatment should also be carried out after processing, and the hardness can reach about HRC42.
