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Heavy Duty High Pressure Welded Hydraulic Cylinder for Excavator

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This heavy-duty welded hydraulic cylinder is engineered for excavators and construction machinery, built to deliver reliable linear force in the harshest conditions. Made from high-grade carbon steel with precision-ground components, it offers superior durability and leak-free performance. The double-acting design ensures smooth, efficient operation, while robust seals and corrosion-resistant coatings extend service life. Ideal for lifting, pushing, and digging tasks, it meets industrial standards and is customizable to your specifications.
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Product Advantages

  • Unmatched Durability: Constructed with high-strength carbon steel and precision-welded joints, this cylinder withstands extreme loads, shocks, and vibration common in construction environments.

  • Leak-Proof Performance: Equipped with premium NBR/PU seals and precision-machined surfaces to prevent fluid loss, ensuring consistent pressure and long-term reliability.

  • High-Pressure Resistance: Rated for working pressures up to 25 MPa, making it suitable for heavy-duty applications like excavators, loaders, and presses.

  • Low Maintenance Design: Smooth, low-friction piston rod and self-lubricating components reduce wear and extend service intervals, lowering operational costs.

  • Customizable Options: Available in various bore, stroke, and mounting configurations to match specific machinery requirements, including clevis, eye, and flange mounts.

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Key Features

  • Double-Acting Design: Delivers force in both directions, enabling precise control for lifting, pushing, and pulling operations.

  • Precision-Ground Piston Rod: Hard chrome-plated for wear resistance and corrosion protection, ensuring smooth movement and minimal seal wear.

  • Integrated Mounting Eyes: Robust, reinforced mounting points for easy installation and secure attachment to machinery.

  • Corrosion-Resistant Coating: Epoxy paint finish protects against rust, chemicals, and harsh weather conditions, extending the cylinder’s lifespan.

  • High-Quality Sealing System: Multiple seal layers (rod seals, piston seals, wipers) prevent contamination and fluid leakage, even in dusty or muddy environments.

  • Optimized Flow Path: Internal porting designed for efficient hydraulic fluid flow, reducing pressure drop and improving responsiveness.

Applications

This versatile hydraulic cylinder is widely used in:

  • Construction Machinery: Excavators, backhoes, bulldozers, and loaders for digging, lifting, and bucket operations.

  • Material Handling: Forklifts, cranes, and aerial work platforms for lifting and positioning heavy loads.

  • Agricultural Equipment: Tractors, harvesters, and farm implements for lifting, tilting, and control functions.

  • Industrial Machinery: Hydraulic presses, shears, and balers for pressing, cutting, and compacting tasks.

  • Waste Management: Garbage trucks and compactors for lifting and compressing waste materials.

  • Marine & Offshore: Deck machinery and lifting equipment, with corrosion-resistant options available.

Technical Parameters

All could be customized by clients' requirement

Parameter

Specification

Bore Diameter

40–200 mm (customizable)

Rod Diameter

25–140 mm (customizable)

Stroke Length

50–3000 mm (customizable)

Working Pressure

16–25 MPa

Test Pressure

24–37.5 MPa

Operating Temperature

-20°C ~ +80°C

Fluid Compatibility

Standard hydraulic oil, anti-wear oil

Mounting Type

Clevis / Eye / Flange / Trunnion

Material

High-grade carbon steel (45# / 20MnV6)

Surface Treatment

Hard chrome plating (rod) + epoxy paint (body)

Seal Material

NBR, PU, FKM (optional)

Warranty

12 months against manufacturing defects

Quality Assurance

  • ISO 9001 Certified: All cylinders are manufactured under strict quality control standards, with 100% pressure testing and leak checks before shipment.

  • Precision Machining: CNC-machined components ensure tight tolerances and consistent performance.

  • Rigorous Testing: Each cylinder undergoes pressure, endurance, and leak tests to verify performance under real-world conditions.

  • Traceability: Every unit is serialized for full traceability, ensuring easy identification and after-sales support.

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FAQ

Q: Can you customize the cylinder dimensions for my specific machinery?

A: Yes, we offer full customization for bore, stroke, mounting style, and pressure ratings. Please provide your technical specifications, and our engineering team will design a tailored solution.

Q: What is the lead time for standard vs. custom orders?

A: Standard models ship within 2–3 weeks. Custom orders typically take 3–5 weeks, depending on complexity and order quantity.

Q: Do you provide OEM/ODM services?

A: Absolutely. We can manufacture cylinders with your branding, specifications, and packaging, supporting OEM/ODM projects for global clients.

Q: What maintenance is required for these cylinders?

A: Regular checks include inspecting seals for leaks, ensuring proper fluid levels, and keeping the piston rod clean. We recommend periodic seal replacement based on usage conditions.

Q: What is the warranty coverage?

A: Our hydraulic cylinders come with a 12-month warranty against manufacturing defects. This does not cover damage from misuse, improper installation, or normal wear and tear.

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Tel/Wechat: +86-15553231983
Whatsapp: +8616658585017
E-mail: sehy@sehymachine.com
Add: 1st Floor, Building 4#, Xindao Street, Yazhou District, Sanya City, Hainan Province (Sanya Yazhou Town Creative Industry Park, Plot A23-4/2) (Centralized Office Area)

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