4628628 9246545 For Hitachi ZX240-3 ZX250K-3 ZX270-3 ZX280LC-3 Excavator Hydraulic Bucket Cylinder

Prouduct Description

For the Cylinder Tube:

1.We utilize premium 25Mn alloy steel, identical to the material used by OEM hydraulic cylinder manufacturers.

2.The surface undergoes sandblasting, followed by a multi-step baking process, beginning with primer application and curing, then finished with a double-layer topcoat for enhanced durability.

For the Piston Rod:

1.The piston rod undergoes comprehensive heat treatment to optimize performance.

2.Surface reinforcement is achieved through high-frequency induction hardening, reaching a hardness level of HRC 55.

3.A robust layer of industrial-grade hard chrome plating is applied to improve wear resistance and longevity.

For the Sealing System:
We incorporate high-quality sealing solutions, sourcing precision-engineered seals from Japan’s NOK and the USA’s SKF, ensuring exceptional sealing performance with an oil leakage rate maintained below 1%.

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Company Profile

GuangZhou GuoLi Engineering Machinery Co., Ltd. boasts over 16 years of experience in the field of excavator hydraulic cylinders, establishing itself as a reliable worldwide provider and producer. We focus on an extensive selection of products, including tracked excavator arm cylinders, boom cylinders, bucket cylinders, cylinder barrels, piston rods, customized hydraulic cylinders, sealing kits, hydraulic pumps, and electrical parts—designed to be compatible with a wide range of excavator models. With shipments spanning more than 100 countries and regions, we are dedicated to offering premium, long-lasting solutions tailored to fulfill the demands of our global clientele.

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