4717392 Original Excavator Rubber Hose Oil Pipe for ZX48-5A

Hitachi original excavator rubber hose oil pipe (universal part number: 4717392) is a key flexible connecting pipeline for conveying high-pressure working fluid in hydraulic systems. According to the universal compatibility information of Hitachi genuine parts, this high-pressure hose assembly is widely compatible with multiple series of hydraulic excavators from Hitachi, including the ZX series (such as ZX200, ZX210, ZX240, ZX250, ZX330, ZX360, etc.), EX series, and some wheeled excavators. It is usually used in core high-pressure oil circuits such as the main pump outlet, multi way valves to various actuators (such as boom cylinders, stick cylinders, bucket cylinders), or rotary/walking motors.

The rubber hose and oil pipe are the core components that ensure reliable and efficient power transmission in hydraulic systems. The original hose assembly undergoes precise crimping technology to ensure a strong bond between the metal joint and the hose, with reliable sealing. Its bending radius has been optimized for easy pipe laying in complex equipment spaces, while also ensuring excellent bending flexibility and long service life under frequent and large movements of the equipment.

The maintenance core of rubber hoses and oil pipes lies in establishing a regular inspection system, implementing preventive replacement, and following correct installation specifications. Firstly, a visual and tactile inspection should be conducted before each shift or every 250 working hours, with a focus on checking the outer rubber layer of the hose for bulges, cracks, cuts, hardening, abnormal wear or local expansion, as well as any leakage, rust or looseness at each joint. Secondly, during the operation of the equipment, if any abnormal vibration, surface overheating, or slow or weak hydraulic action is found in a certain section of the hose, the machine should be stopped immediately for troubleshooting.