4677980 Original Excavator Tubing Hose for EX5600 

Hitachi original excavator oil hose (part number: 4677980) is a key pipeline component used to transport high-pressure hydraulic oil in Hitachi excavator hydraulic systems, responsible for connecting core components such as hydraulic pumps, control valves, and oil cylinders. As an original standard component, it is widely compatible with multiple Hitachi excavator models, including the ZX series (such as ZX60, ZX70, ZX200, ZX210, ZX240, ZX250, ZX330, ZX470, etc.) and the EX series (such as EX120, EX200, EX300, EX400, etc.).

The oil hose is the "power transmission artery" of the hydraulic system, and its core function is to safely and reliably deliver hydraulic oil under system pressures of up to 35MPa or even higher, driving various working devices (boom, arm, bucket, rotation, walking) to move, while withstanding pressure pulsations, mechanical vibrations, and temperature changes during continuous equipment operation. As an original part, it strictly complies with Hitachi's quality standards, and is usually made of oil resistant synthetic rubber with multi-layer high-strength steel wire braiding or winding reinforcement. The inner rubber layer is resistant to hydraulic oil corrosion, the middle rubber layer is firmly bonded, and the outer rubber layer has excellent wear resistance, weather resistance, ozone resistance and anti-aging resistance.

The maintenance core of this oil hose lies in regular inspection, preventive replacement, and standardized installation to prevent hydraulic system failures, oil leaks, and even safety accidents caused by pipeline failures. Daily inspection: It is recommended to visually inspect the outer layer of the hose every 250 working hours or every week for cracks, bulges, cuts, abnormal expansion, wear (especially in contact with the vehicle body), and check for oil leakage, rust, or looseness at the joints. In harsh working conditions such as mining and crushing, the inspection frequency should be doubled. Professional inspection and replacement: It is recommended to conduct a comprehensive inspection every 2000 working hours or annually, and perform preventive replacement if necessary.