Jinan Changhao offers excavator hydraulic cylinders in a wide range of models, such as Komatsu, Hitachi, Cat, Volvo, Daewoo,Hyundai, JCB, and so on.
All of our excavator hydraulic cylinders include excavator arm cylinder, excavator boom cylinder, excavator bucket cylinders.
Cylinder Material: The cylinder barrel of the boom cylinder is typically made of seamless steel tubing. For low-pressure applications, No. 20 steel tubing is often used; while for medium- and high-pressure applications, No. 45 steel tubing is preferred to ensure sufficient strength and pressure resistance.
The cylinder barrel’s inner bore is generally honed or rolled, with a surface roughness controlled within 0.4μm to ensure sealing performance and smooth operation.
The piston rod is typically made of #45 steel, and undergoes heat treatment and surface chrome plating (approximately 0.03–0.05mm thick) to improve hardness, wear resistance, and corrosion resistance.
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