4248320 4310241 4236054 4340511 For Hitachi EX400 EX400-3 EX400-5 Excavator Hydraulic Boom Cylinder

Prouduct Description

Tube: Made from high-strength 25Mn steel, identical to OEM standards. Sandblasted and coated with a dual-layer baked paint finish for durability.

Rod: Fully heat-treated piston rod with high-frequency hardening (HRC 55) and industrial-grade chrome plating for extended wear resistance.

Seal: Equipped with premium NOK (Japan) and SKF (USA) seals, ensuring an ultra-low oil leakage rate below 1%.

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Company Information

GuangZhou GuoLi Engineering Machinery Co., Ltd. over 16 years of experience in the field of excavator hydraulic cylinders, establishing itself as a reliable worldwide provider and producer. Our company is engaged in the supply of spare parts for such equipment manufacturers as: JCB, CASE, VOLVO, DOOSAN, HYUNDAI, HITACHI, KOMATSU, CATERPILLAR, SHANTUI,SUMITOMO,KUTO,KUBOTA

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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.