4686334 9292426 Hydraulic Arm Cylinder For Hitachi ZX330-3G ZX350H-3G ZX360-3 ZX350-5

Prouduct Description

For the Cylinder Tube:
1. We utilize 25Mn alloy steel, identical to the material used by original hydraulic cylinder manufacturers.
2. The exterior undergoes sandblasting, followed by a baked painting process. A primer coat is applied and dried before a final topcoat is added, ensuring a dual-layer protective finish.

For the Piston Rod:
1. The piston rod undergoes full thermal conditioning for enhanced durability.
2. The surface is strengthened using high-frequency induction hardening, achieving a hardness level of up to 55HRC.
3. A layer of industrial-grade hard chrome plating is applied to enhance wear and corrosion resistance.

For the Sealing System:
We incorporate premium seals from Japan’s NOK and the USA’s SKF, ensuring minimal hydraulic oil leakage, maintaining a leakage rate of less than 1%.

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Company Information

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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Customer Evaluation

Guangzhou Guoli Engineering Machinery Co., Ltd., located in GuangZhou city, benefits from a large construction machinery parts market and convenient transportation access. Our company specializes in producing a range of excavator hydraulic cylinders, including excavator arm cylinders, boom cylinders, bucket cylinders, cylinder tubes, and cylinder rods. With 10+ years expertise, we've established a complete production line from R&D to manufacturing, offering OEM customization and precise part number systems with technical specifications/photos/pricing. We pride ourselves on using premium materials such as high-strength steel and advanced processing technologies to ensure durability and performance.

In addition to hydraulic cylinders, we also provide a comprehensive range of other hydraulic components. This includes hydraulic pumps, swing motor, control valve,travel motors,engine parts,and undercarriage components, all designed for use in various excavator models. Our extensive product portfolio reflects our commitment to delivering complete solutions for construction machinery, ensuring that all critical components are available to meet the needs of our customers.

We serve a global customer base, including clients from Thailand, the Philippines, Indonesia, Malaysia, the United States, Turkey, Russia, Mexico, and many other countries. Our products have been recognized and recommended by local dealers and are highly regarded for their quality and reliability. With our competitive prices, timely delivery, and outstanding customer service, we are committed to providing the best solutions for each client. We warmly welcome inquiries from businesses worldwide and look forward to establishing long-lasting partnerships.