YB00000665 Excavator Parts Iron Pipe for Hitachi ZX330-5G

The part number YB00000665 is a genuine component produced by Hitachi Construction Machinery in Japan, which is the original metal pipeline for the ZX330-5G medium-sized hydraulic excavator. According to its form, it is usually used in hydraulic systems and may be a connecting pipe for pilot oil circuits, return oil pipelines, or specific actuators. Its universal model mainly covers the ZX330-5G model, and may also be applicable to excavators of the same platform and similar tonnage in the 5G series such as ZX350-5G and ZX370-5G. As an original precision pipeline, its length, bending curvature, and interface specifications are perfectly matched with the overall layout of the vehicle. The use of non-standard spare parts is strictly prohibited to avoid oil leakage, pressure loss, or system abnormalities.

This product is a cold drawn seamless precision steel tube, a silver metal tube with a specific curved shape, and the surface should be galvanized or treated with other rust prevention measures. The two ends are crimped with black formed joints, which are usually made of carbon steel or alloy steel and may integrate O-rings or metal sealing surfaces. Its typical technical parameters include: inner diameter, outer diameter, and wall thickness designed according to system flow rate and pressure; Accurate bending radius to ensure smooth installation and no stress concentration; The working pressure range is usually 10-30MPa, depending on the system it is applied to; The temperature resistance range is about -30 ℃ to+120 ℃, and it can withstand long-term immersion of hydraulic oil and external environment. Its core function is to achieve a reliable sealed connection between two points in a limited space, and to withstand pressure pulses and equipment vibrations of the system.

Inspection cycle: Every 500 working hours, check the surface of the pipeline for any bumps, scratches, rust, bulges, and oil leakage marks at both ends of the joint. Installation points: 1 Before replacement, the relevant system pressure must be released; 2. Cleaning: Clean the sealing surface of the new pipe and interface with a lint free cloth; 3. Alignment installation: Rotate or insert the joint into the first buckle by hand to ensure alignment and avoid cross threading; 4. Torque tightening: Use a torque wrench to tighten the joint nut or bolt to the specified torque in the maintenance manual (commonly 30-60 N · m)=