The track roller is composed of shell,collar,shaft,seal,O-ring,bushing bronze,plug,lock pin. the function of the track roller is to convey the weight of excavator to the ground. When excavator is run on uneven ground,track rollers carry a tremendous impact. Therefore,the support of track rollers is huge.Moreover,if it is of poor quality and is often dusty,it needs a very good sealing to prevent dirt,sand,and water from damaging it. With high quality hardness ware-resisting alloy chrom&molybdenum floating seal and elastic rubber O ring,deep hardnedd wear surface,good quality bronze bushings,steel shaft made by round steel or forging,well lubricated oil recycle system,we are your best choice.
