Arm Bucket Hydraulic Cylinder 400310-00390 400305-00308 for DX140 Excavator OEM Cylinder

Specification

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.

Why do excavator hydrauliccylinders fail?

(1) Seal Wear: Over time, seals deteriorate from pressure and heat, leading to internal or external leaks.

(2) Physical Damage: Impacts from falling debris or collisions with other machinery can dent the cylinder, preventing smooth piston movement.

(3) Contamination: If the cylinder barrel is not properly cleaned during assembly or maintenance, debris or metal shavings may scratch the inner wall. This can cause scoring, leading to seal failure, internal leakage, and reduced performance.

(4) Bent Rods or Misalignment: Excessive side load or poor installation can cause rod bending, making it difficult for the piston to operate normally.

Regular inspection, cleaning, and proper installation are key to extending cylinder lifespan and avoiding costly repairs.

More Cylinders We Can Provide

FAQ

Q1: Can I customize hydraulic cylinders according to my machine specifications?
A:Yes. We offer full customization services for excavator hydraulic cylinders, including size, stroke, mounting type, and seal options. Simply provide your machine model, part number, or drawings, and our engineers will assist you.

Q2: Besides hydraulic cylinders, what other excavator parts do you supply?
A:We provide a wide range of excavator components, including:
Final Drive / Travel Motor
Swing Motor & Swing Gearbox
Hydraulic Pump
Main Control Valves
Engine Parts
Seal Kits
Undercarriage Parts (track chains, rollers, sprockets, etc.)
Electrical Parts
Cab & Body Components

Q3: Are your parts compatible with major brands?
A:Yes. Our parts are designed to fit various leading excavator brands such as Caterpillar, Komatsu, Hyundai, Volvo, Hitachi, Kobelco, Doosan, and more.

Q4: How do you ensure the quality of your products?
A:All cylinders and major components are 100% factory-tested before delivery. We follow strict quality control from raw material selection to final assembly, ensuring durability and performance.

Q5: Do you offer fast delivery for urgent orders?
A:Yes. We maintain a large inventory of commonly used parts and cylinders, which allows us to dispatch quickly and meet tight project timelines.

Q6: How can I place an order or get a quote?
A:You can contact us directly via WhatsApp, email, or send an RFQ with your requirements. Our sales team will respond within 12 hours with detailed information.

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.