31QB-63110 310B-63111 31V1-35620 31V1-35621 R520LC-9S Excavator Bucket Hydraulic Cylinder Assy

Our OEM-quality excavator hydraulic cylinders are made from high-strength steel for durability and long service life, fully compatible with original specifications.

Specification

What materials are used in excavator hydraulic cylinders?
Excavator hydraulic cylinders are primarily constructed from hardened high-strength alloy steel to ensure durability under high-pressure operations.

Cylinder Barrel: Typically made of precision-honed alloy steel or carbon steel, offering high fatigue strength and resistance to internal pressure.

Piston Rod: Manufactured from chrome-plated hardened steel, often achieving surface hardness up to HRC 62, which enhances wear resistance and corrosion protection.Many different metals are used to make the cylinder rods, but most commonly, theyare made of steel or stainless steel and then coated with a type of chrome material.

Rod Coating: The rod surface is usually treated with hard chromium plating to reduce friction and extend service life.

About Us

With over 16 years of experience in hydraulic cylinder manufacturing, GLPARTS is a trusted supplier serving the global construction machinery industry. Equipped with advanced production facilities and precision technology, our products are exported to more than 100 countries, including the United States, Germany, Australia, and the Middle East.

Backed by a skilled team of engineers and a highly responsive sales force, we offer comprehensive pre-sales, in-sales, and after-sales support to ensure customer satisfaction at every stage.

We maintain a large inventory of excavator parts to guarantee fast delivery and support urgent project needs. Whether you need standard models or custom solutions, GLPARTS is your reliable partner for durable, high-performance hydraulic components.

More Cylinders We Can Provide

Other Products

Final Drive / Travel Motor
Swing Motor & Swing Gearbox
Hydraulic Pump
Control Valves
Engine Parts
Seal Kits
Undercarriage Parts
Electric Parts
Cab & Body Components

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.