4450651 4438245 Bucket Hydraulic Cylinder For Hiatchi Excavator EX1200-5 EX1200-6 Excavator Parts

Prouduct Description

For the tube:

1.we use 25Mn steel, which is the same as original manufacturer of hydraulic cylinders.
2.The surface is sandblasted ,first, using the paint baking process, spraying primer and drying, and then spraying top paint, 2 layers of paint

For the rod:

1.Piston rod overall conditioning
2.High frequency surface hardening , hardness up to 55.
3.The surface is treated with hard chromium plating.

For the seal:

We use Japan NOK and US SKF imported seals, and the oil leakage rate of the cylinder is controlled below 1%.

Product Display

Company Information

GuangZhou GuoLi Engineering Machinery Co., Ltd. has over 16 years of expertise in excavator hydraulic cylinders, serving as a trusted global supplier and manufacturer. We provide a wide range of products, including arm cylinders, boom cylinders, bucket cylinders, cylinder tubes, piston rods, custom hydraulic cylinders, seal kits, hydraulic pumps, and electrical parts—compatible with various excavator models. Exporting to over 100 countries, we are committed to delivering high-quality, durable solutions to meet the needs of our customers worldwide.

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Customer Evaluation

Excavator Hydraulic Cylinder Maintenance Tips

1. Check for Leaks– Regularly inspect hydraulic cylinders for oil leaks around seals and connections to prevent performance issues.

2. Inspect Seals and Rods– Examine seals for wear or damage and keep the piston rods clean to prevent contamination and premature wear.

3. Use High-Quality Hydraulic Oil– Ensure the use of clean, high-grade hydraulic oil and replace filters regularly to maintain smooth operation.

4. Avoid Overloading – Do not exceed the excavator’s rated load capacity to reduce excessive stress on hydraulic cylinders.

5. Monitor Performance– Pay attention to any unusual noises, jerky movements, or slow operation, as these may indicate internal damage or wear.

6. Lubrication and Corrosion Prevention – Apply proper lubrication to moving parts and protect exposed surfaces from rust and corrosion.

7. Schedule Regular Maintenance – Perform routine inspections and servicing to extend the lifespan of hydraulic cylinders and prevent costly repairs.

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.