Excavator parts EX40-1 Track roller

Hitachi track roller EX40-1 is an undercarriage accessory for Hitachi EX40 mini excavators. Its main function is to support the weight of the excavator’s body so that the excavator can travel smoothly in various terrain conditions. Its material and process usually have high requirements, the wheel body material is usually 50Mn, 40Mn2, etc. After forging, machining and heat treatment processes, the hardness of the wheel surface quenching needs to reach HRC45~52 to ensure good wear resistance and load carrying capacity.