Double Acting

Hydraulic Cylinder

Double Acting Hydraulic Cylinders for Precision Control

The Fundamental Engine of Modern Machinery: Controlled Power in Two Directions

A double acting hydraulic cylinder is the pinnacle of linear actuation, engineered to deliver controlled, powered force for both extension and retraction strokes. This dual action hydraulic cylinder uses hydraulic pressure to move the piston in both directions, which is essential for complex operations requiring precise positioning, pushing, and pulling, such as steering and lifting in demanding industrial environments.

As a leading double acting hydraulic cylinder manufacturerand OEM supplier in the global market, EVER-POWER GROUP CO., LTD. specializes in high-pressure, durable solutions, including double-ended hydraulic cylinders, telescopic rams, and customized hydraulic pistons. Our products serve core industrial sectors worldwide, ensuring minimal downtime and maximum operational efficiency.

Core Product Category	Key Technical Data	Focus Application & Advantage
Standard Double Acting Cylinders	Bore: Φ20 mm to 500 mm (Max)	Universal replacement, robust performance for industrial machinery and processing equipment.
High-Pressure Cylinders	Pressure Rating: Up to 40 MPa	Heavy-duty applications in construction cranes, mining support legs, and specialized presses.
Forklift Series Cylinders	Work Pressure: 16 MPa to 21 MPa (Typical)	Steering, Tilt, and Lift control in high-cycle material handling and logistics operations.
Custom / OEM Cylinders	Annual Capacity: 1.2 Million Units	Tailored structural forms and material upgrades (e.g., specialized rod coatings) to meet unique client specifications.

Double Acting Hydraulic Cylinder For Sale

Our double acting cylinder for sale inventory is segmented by function and design, ensuring specific performance characteristics for various machinery:

Forklift Series: Includes the Forklift Tilt Hydraulic Cylinder, Forklift Steering Hydraulic Cylinder, and Distance Adjustment Cylinder
Aerial Work Platform (AWP) Series: Featuring lift, swing, and steering cylinders, such as Lifting Cylinder For Scissor Type Aerial Work Vehicles and Leveling Oil Cylinder For Arm Type Aerial Work Vehicles, optimized for elevated stability.
Crane and Heavy Lift Series: Large-bore cylinders including Lift Hydraulic Cylinders for Crawler Crane and Luffing Hydraulic Cylinders for Car Crane, designed to handle extreme forces up to $40 MPa$ .
Light Rod Series: Standardized industrial models for machine tools and specialized equipment.

EVER-POWER: A Foundation of Expertise and Trust

We are a leading manufacturer specializing in hydraulic cylinders and hydraulic systems, dedicated to delivering high-tech solutions. Our company primarily serves OEMs in industries such as construction machinery, aerial work platforms, sanitation vehicles, wind power, and agricultural machinery. We offer a versatile range of hydraulic cylinders with inner diameters ranging from +20 to 500 mm, boasting an impressive annual design capacity of 1.2 million units.

Our state-of-the-art facilities include a provincial research institute, a high-tech R&D center, and a specialized hydraulic product testing laboratory. We utilize advanced equipment such as dedicated turning centers, high-speed cutting and polishing machines, automatic processing and welding systems, automatic cleaning and assembly lines, fully automated flexible painting lines, and intelligent logistics assembly lines. This comprehensive production and testing capability enables us to maintain a strong technological development capacity, ensuring our manufacturing processes and product quality meet advanced national standards.

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Our state-of-the-art facilities ensure that every double acting hydraulic ram meets stringent international standards.

Certifications: We hold the industry’s most critical certifications, providing definitive proof of quality and safety: ISO 9001 (Quality Management), ISO 45001 (Occupational Health and Safety), and ISO 14001 (Environmental Management).

Production Excellence: Our massive $51, 360 m^{2}$ plant in Zhejiang, China, features cutting-edge automation. This includes dedicated turning centers, high-speed cutting and polishing machines, Multi Station Welding Robots, and fully automated flexible painting lines. This investment ensures the precision and durability our clients expect.

Mandatory Testing: Every cylinder is subjected to rigorous testing at our specialized hydraulic product testing laboratory. This includes a Special Cylinder Testing Machine and Pulse Pressure Testing to confirm pressure resistance and leak-proof stability far beyond standard operating conditions.

Production and Processing Workshop

Loading and Unloading Robots For Paint Lines

Product Testing Center

Cylinder Composite Machining Center

Automatic Cylinder Assembly Machine

Our commitment to delivering products that are durable, pressure-resistant, and leak-proof is maintained by an advanced and standardized QA system.

Material Integrity Check: Raw materials for the cylinder tube and rod are verified for chemical composition and mechanical strength using advanced analytical equipment.
Precision Machining: Cylinders undergo internal processes on dedicated machinery, including high-speed cutting and roller burnishing , to achieve mirror-smooth internal surfaces, minimizing seal friction and maximizing efficiency.
Automated Welding and Assembly: Processes utilize Multi Station Welding Robots and Automatic Cylinder Assembly Machines to ensure absolute consistency and structural integrity, crucial for high-pressure systems
Pressure and Endurance Testing: Every cylinder is subjected to mandatory static high-pressure testing and dynamic Pulse Pressure Testingon specialized test benches, verifying performance stability against international benchmarks.
Final Quality Certification: Final inspection takes place in the Cylinder Inspection Area before dispatch, ensuring all metrics meet or exceed the performance levels expected of a China Manufacturer supplying premium products.

Cylinder Assembly Line

Special Cylinder Testing Machine

Cylinder Inspection Area

Multi Station Welding Robot

Warehouse

Future Trends: Innovation in Double Acting Cylinder Technology

The future of linear actuation is moving toward higher efficiency, smarter integration, and extreme durability. EVER-POWER is focusing R&D on:

Integrated Sensing and Smart Hydraulics: Developing cylinders that embed position and pressure sensors directly into the ram for real-time feedback. This enables proportional control of speed and position, especially valuable in complex machinery like Aerial Work Platforms and Press Leveling Systems.

Extreme Operating Pressures: Continuously developing materials and sealing technologies to safely handle operating pressures exceeding $40 MPa$ , opening doors to new classes of heavy-duty, compact machinery.

Energy Efficiency: Optimizing internal cylinder design and collaborating with our Hydraulic Power Unit division to implement low-noise, high-efficiency gear pumps, aligning with global trends toward cleaner industrial solutions.

In-Depth Knowledge About Double Acting Hydraulic Cylinder

To serve our audience of engineers, purchasing managers, and technical specialists, we provide comprehensive answers to common technical queries, reinforcing our reputation as an authority and utilizing valuable long-tail search terms.

Feature	Double Acting Cylinder	Single Acting Cylinder
Powered Motion	Both Extend and Retract	Only one direction (usually Extend)
Return Method	Hydraulic Pressure	External Force (Gravity, Spring, or Load)
Control	Highly precise speed and position control in both strokes.	Limited control during the return stroke.
Typical Use	Excavator booms, Forklift tilt/steer, Crane jibs, Hydraulic presses.	Dump truck beds, Jacks (Double Acting Hydraulic Jack).

What is the Hydraulic Cylinder Double Rod and Why is it Preferred?

The hydraulic cylinder double rod (or double ended cylinder) design features a rod extending through both ends of the cylinder barrel. It is preferred when:

Equal Force and Speed are Required: Since the effective area for the hydraulic pressure to act upon is equal at both ends, the speed and force are virtually identical in both directions.

Symmetrical Mounting is Necessary: The dual rod design often simplifies the mounting of mechanical loads and external sensors, especially in complex systems like steering linkages or industrial conveyors.

Precise Velocity Control is Essential: The symmetry ensures consistent flow dynamics, providing the ultimate in precise, smooth velocity control throughout the entire stroke.

How to Maintain the Double Acting Piston Seal to Prevent Leakage?

Seal failure is the leading cause of hydraulic system inefficiency and fluid contamination. Proper maintenance of the double acting piston seal is crucial.

Use Approved Fluids: Ensure the hydraulic fluid is clean and compatible with the seal material (Polyurethane, PTFE).
Inspect Rod Surfaces: Regularly check the piston rod for scratches, pitting, or scoring. Even minor damage can shred the seal over time. Our hardened and polished rods minimize this risk.
Replace Seals Proactively: Seals have a finite life. Utilizing original manufacturer seal kits for replacement, rather than generic parts, ensures the correct fit and material quality for continued leak-proof operation.

The Engineering of Control: Double Acting Cylinder Design & Physics

The function of a dual action hydraulic cylinder is rooted in the precision application of hydraulic physics, providing mechanical engineers with controlled, predictable force in a compact unit.

What is a Double Acting Hydraulic Piston?

A double acting hydraulic piston utilizes a directional control valve to alternately pressurize the fluid on either side of the piston head.

Extension (Push): Fluid is directed to the cap end (the blind end), pushing the piston and extending the rod. The force generated here is generally higher because the pressure acts on the full area of the piston face.

Retraction (Pull): Fluid is directed to the rod end, pushing the piston back and retracting the rod. The force generated here is slightly less because the rod occupies part of the area, reducing the effective surface area for the fluid pressure to act upon.

Classification by Design and Application

We classify our double acting hydraulic cylinders not only by their use but by their structural forms, accommodating diverse mounting and force transfer needs:

Built with high-strength steel rods to hold the end caps under pressure, ideal for machine tool low-pressure hydraulic cylinder applications and manufacturing environments where standardization and easy maintenance are paramount.

Tie-Rod Cylinders

Featuring heavy-duty welded joints, these designs offer a more compact structure and superior rigidity under high-stress, non-symmetrical loads, typical of excavator and crane components.

Welded Cylinders

In this hydraulic cylinder double rod design, the piston rod extends through both end caps. This configuration results in equal force and speed in both directions because the pressure acts on equal areas (the force of the rod pushing against the fluid is the same on both sides).

Double-Ended Hydraulic Cylinder

A multi-stage cylinder where the nested tubes extend and retract under hydraulic power in both directions. This is critical for achieving extremely long strokes from a short retracted length in applications such as massive support legs or specialized lift mechanisms.

Double Acting Telescopic Cylinder

Classification by Pressure Ratings and Materials

Our commitment to quality starts with the use of high-grade materials and rigorous process control.

Positive Retraction: In applications like aerial work platforms or large cranes, gravity alone is insufficient or unsafe for controlled retraction. The double acting design ensures a smooth, powerful, and safe return stroke.

Positive Retraction: In applications like aerial work platforms or large cranes, gravity alone is insufficient or unsafe for controlled retraction. The double acting design ensures a smooth, powerful, and safe return stroke.

High Cycle Speeds: Systems requiring rapid, repetitive extension and retraction (such as automatic cleaning or automated assembly lines) benefit from the powered speed in both directions that a hydraulic double acting pump provides.

Double Acting Hydraulic Cylinder Application

Material Handling,Construction,Industrial Production,Marine Applications

In material handling, a double acting hydraulic cylinder for forklifts ensures smooth and responsive operation. For example, our Forklift Steering Hydraulic Cylinder allows for precise steering control, enabling operators to navigate tight warehouse spaces with ease. Additionally, our Forklift Tilt Hydraulic Cylinder facilitates accurate tilting of the mast, ensuring safe and efficient handling of goods during loading and unloading.

Material Handling

In the construction industry, a double acting hydraulic cylinder for excavators, such as our Large Excavator Boom Cylinder, ensures smooth and precise arm movement in demanding projects. This cylinder provides the power and control needed to dig, lift, and maneuver heavy loads, making it a critical component for excavation tasks. Similarly, our Aerial Work Platform Luffing Cylinder enables high-precision angle adjustments for aerial work platforms, ensuring safety and efficiency at elevated heights.

Construction

For industrial applications, a double acting hydraulic cylinder for injection molding, like our Injection Molding Machine Mold Opening and Closing Cylinder, delivers the precision required for mold operations in plastic manufacturing. This cylinder ensures consistent opening and closing of molds, improving production efficiency and product quality. Additionally, in metalworking, our Press Leveling Cylinder provides balanced force for pressure machines, ensuring stable and accurate pressing operations.

Industrial Production

In marine environments, a double acting hydraulic cylinder for marine applications, such as the Offshore Crane Main Boom Luffing Cylinder, supports heavy-duty lifting and angle adjustments on offshore cranes. These cylinders are designed to withstand harsh conditions, providing reliable performance for tasks like cargo handling and platform maintenance in marine settings.

Marine Applications

Customer Success Stories

Improved Excavator Performance for a Construction Leader

A top construction firm in the Middle East struggled with inconsistent arm movement in their excavators, leading to delays in large-scale infrastructure projects.

After integrating our double acting cylinder for excavators, specifically the Large Excavator Boom Cylinder, they achieved a 25% increase in operational efficiency.

25%

Increase in operational efficiency with smoother arm movements and reduced downtime

The cylinder’s precise control and reliable performance enabled smoother arm movements, reducing downtime and improving project timelines. This success underscores the value of partnering with a trusted double acting hydraulic cylinder manufacturer to enhance equipment performance.

Frequently Asked Questions

This section provides quick, authoritative answers to common inquiries from engineers and procurement specialists regarding double acting hydraulic cylinders.

1

What Defines a Double Acting Hydraulic Cylinder and its Core Function?

A double acting hydraulic cylinder is a linear actuator that uses pressurized hydraulic fluid to create powerful motion in both directions—extension and retraction.

Unlike single acting cylinders, which rely on external forces like gravity or springs for their return stroke, the dual action design ensures precise, powered control and speed throughout the entire operational cycle.

This capability is crucial for lifting and positioning heavy loads in complex machinery like cranes, excavators, and precision presses.

2

How Does a Double Ended Hydraulic Cylinder Differ from a Standard Double Acting Ram?

A double ended hydraulic cylinder features a piston rod that extends through both end caps of the cylinder barrel (a hydraulic cylinder double rod configuration).

While both are double acting, the double-ended design is unique because the hydraulic area is equal on both sides of the piston. This mechanical symmetry results in equal speed and equal force in both the extension and retraction directions.

This makes it ideal for precision control, such as vehicle steering mechanisms and specialized industrial testing equipment.

3

What Maximum Operating Pressure Can EVER-POWER Double Acting Cylinders Handle?

Our heavy-duty double acting cylinders are engineered for demanding industrial and construction applications with maximum pressure ratings up to 40 MPa.

This high-pressure capability ensures our components are suitable for the highest performance specifications in large-scale lifting (like crane boom luffing) and heavy pressing applications.

Every cylinder design undergoes rigorous pulse pressure testing to guarantee leak-proof stability at extreme loads.

Essential Complementary Products

System integrity requires that every component is of matching quality. We recommend pairing our double acting hydraulic cylinders with the following in-house engineered products for a complete, optimized hydraulic solution:

Hydraulic Power Units (HPUs): These are the hearts of your hydraulic circuit, delivering precise flow and pressure to the cylinder. Our modular and non-standard HPUs, featuring low-noise gear pumpsand high-performance, zero-leakage cartridge valves, can be customized up to $35 MPa$ .

Control Valves and Manifolds: The precision of a double acting cylinder relies entirely on the directional and flow control valves. We supply custom valve blocks and components that integrate seamlessly with our cylinders to ensure smooth operation and minimal hydraulic shock.

Sealing Kits and Pin/Bush Kits: We offer full OEM replacement seal kits featuring high-quality piston seals for every cylinder model. We also provide precision-machined pin and bush kits to secure the cylinder’s mounting points, preventing premature wear at critical articulation joints.

Double Acting Hydraulic Cylinders for Precision Control

The Fundamental Engine of Modern Machinery: Controlled Power in Two Directions

Double Acting Hydraulic Cylinder For Sale

Forklift Tilt Hydraulic Cylinder

Forklift Steering Hydraulic Cylinder

Forklift Distance Adjustment Hydraulic Cylinder

Machine Tool Low-Pressure Hydraulic Cylinder

Standard MOB Light Rod Hydraulic Cylinder

FA Front Flange Type Light Rod Hydraulic Cylinder

LB Footstand Type Light Rod Hydraulic Cylinder

TC Middle Trunnion Type Light Rod Hydraulic Cylinder

CA Monoaural Type Light Rod Hydraulic Cylinder

CA Monoaural Type Y Connector Light Rod Hydraulic Cylinder

CA Monoaural Type PHS Fisheye Connector Light Rod Hydraulic Cylinder

CB Light Tie Rod Hydraulic Cylinder with Pin