3058761 Original Excavator Parts Bucket Shaft Pin Shaft for ZX200-3G ZX200-5G ZX240-3G ZX270 

Part number 3058761 is a specialized part number for the bucket shaft pin of Hitachi's original excavator. The pivot is the core hinge component that connects the bucket and boom (or connecting rod) in the excavator working device, and bears the huge shear force and impact load during excavation operations. According to the general information of Hitachi excavator accessories, it is widely compatible with Hitachi ZX series (ZAXIS) hydraulic excavators. Common models may include ZX200, ZX210, ZX240, ZX250, ZX330, ZX350, ZX450, etc. It is specifically used for the connection hinge point between the bucket and the boom. The original part number is 3058761, which must be used as the reference for verification during procurement.

The bucket shaft pin is the core load-bearing component for the articulated force transmission of excavator buckets. Its core function is to serve as a rotational pivot between the bucket and the boom, converting the thrust of the oil cylinder into excavation force and bearing the huge bending, shear, and impact loads from soil reaction forces. The pin shaft is usually designed with lubricating oil channels and oil storage tanks, and may have anti-corrosion coatings (such as galvanizing or Dacromet treatment). Its static strength and fatigue life have been specially calculated and tested to meet the demanding requirements of excavators under heavy loads, frequent impacts, and harsh working conditions.

The maintenance core of the bucket shaft pin lies in regular lubrication, monitoring wear and tear, and standardized disassembly and assembly. Replacement specification: Special tools (such as hydraulic jacks and guide rods) must be used for disassembly and assembly, and direct tapping is strictly prohibited. Before installation, thoroughly clean the pin shaft, bushing holes, and all mating surfaces, and apply an appropriate amount of lubricating grease. After installation, tighten the locking bolts or clamps according to the specified torque, lubricate them thoroughly, and conduct a trial run to check if the action is smooth and there is no abnormal noise. It is recommended to check and replace worn pins and bushings every 3000 to 5000 working hours or during major repairs.