Excavator Parts ZAX330 Carrier Roller

Hitachi ZAX330 carrier roller is an important chassis part of Hitachi ZAX330 excavator, which is suitable for this model and some excavators of the same series.It is made of high quality 40Mn2 steel forging, tempered and medium frequency induction surface quenching heat treatment, high strength, good wear resistance, surface hardness of HRC50-56, hardened layer depth of 8-12mm. in addition, the shaft is made of 45# steel by similar heat treatment, good overall performance, also equipped with high-performance Cr-Al alloy floating seals and nitrile rubber O-rings, which ensures the smoothness of the crawler when the excavator is traveling.It can ensure the smooth running of the tracks when the excavator is traveling and reduce the vibration and wear of the tracks.