China Double Acting Cylinder Manufacturers, Suppliers, Factory - Buy Customized Double Acting Cylinder

Shenzhen Dallast Technology Co., Ltd. : Your Trustworthy Double Acting Cylinder Manufacturer！

Shenzhen Dallast Technology Co ., Ltd. is a hydraulic cylinder manufacturing enterprise integrated with professional designing, production, and sales. The company after decades of precipitation process, has a mature R&D to production process, technology research, and development capabilities to lead the company's business development capabilities.

Rich Product Variety

The company focuses on and specializes in the production of various types of hydraulic cylinders, including dump truck hydraulic cylinders; engineering cylinders; agricultural cylinders; telescopic cylinders; small hydraulic cylinders, welding cylinders and hydraulic lifting cylinders, etc.

Wide Range of Product Uses

Our products can be widely used in many fields such as dump trucks, dump trailers, garbage trucks, excavators, loaders, forklifts, cranes, ships, mining machinery and fire trucks.

Quality Assurance

Our products will undergo many tests such as trial run test, start-up pressure test, pressure resistance test, leakage test, full stroke test, etc. before delivery; each hydraulic cylinder will be tested and will not be shipped until it passes various tests.

Leading Service

We have many years of industry experience and a complete production management, quality supervision, sales service operation system. Whether you want to buy a dump truck hydraulic cylinder or an engineering cylinder, just send your requirements by email and we can customize the product for you.

Double Acting Hydraulic Cylinder
Double acting hydraulic cylinder having an oil inlet port at both side of the piston seal that allows a double acting hydraulic cylinder to be extended and retracted.
read more
Dual Action Hydraulic Cylinder
DALLAST is a dual acting hydraulic cylinder supplier based on design, development and manufacturing. Its products focus on dual acting hydraulic cylinder for dump trucks
read more
50mm Bore Double Acting Cylinder Rams
DALLAST offers 50mm Bore Double Acting Cylinder Rams. All cylinders are 100% tested before shipping to ensure each cylinder is qualified.
read more
2 Way Hydraulic Ram
One way hydraulic cylinder refers to the movement in one direction is achieved by hydraulic pressure. When returning, it depends on external force such as self-weight or spring.
read more
2 Way Hydraulic Cylinder
DALLAST offers 2 Way Hydraulic Cylinder. DALLAST each cylinder before sold should be tested by Ultrasonic detector, spectrograph, CMM, metallography, chrome thickness tester to confirm its capacity.
read more
Two Way Hydraulic Cylinder
Two way hydraulic cylinder have been specially designed and selected for materials to meet high-rigid and high-load working environments
read more
Two Way Hydraulic Ram
DALLAST offers Two Way Hydraulic Ram. Double acting hydraulic cylinder mainly includes double acting single piston rod hydraulic cylinder, double acting double piston rod hydraulic cylinder, double
read more
Double Acting Ram
Double acting threaded hydraulic cylinder, Double rod end cylinder, Double acting trunnion mount cylinder, Double acting cross tube cylinder, Double acting clevis mount hydraulic cylinder, Double
read more
Double Acting Jack
DALLAST offers Double Acting Jack. DALLAST as a professional manufacturing expert of Hydraulic Cylinders (with ISO9001&TS16949).
read more
Double Acting Hydraulic Ram
1: Hard chrome plating. 2: Thickness of 0.03-0.05mm. 3: In-house salt spray test.
read more
Double Acting Cylinder Actuator
Our cylinders various used in loaders, fork loaders, excavator, cranes, tractors, agriculture machine, forestry, push and pull equipment, ships, mining machinery and fire engines, sanitation vehicles
read more
Double Acting Double Rod Cylinder
Our factory produce double acting double rod cylinder for more than 15 years with ISO 9001 certification.
read more

First 12 Last

What is Double Acting Cylinder

A double-acting cylinder is a type of pneumatic or hydraulic actuator that provides linear motion in two directions—extension and retraction. Unlike a single-acting cylinder, which relies on a spring or external force to return to its original position after extension, a double-acting cylinder is equipped with ports on both sides, allowing pressurized fluid to enter on either side of the piston.

Features of Double Acting Cylinder

Efficient Operation
The pressure of the hydraulic fluid is used to move the piston, and the motion of the piston is transferred to the load, which makes double acting hydraulic cylinders very efficient.

Durability
Double acting hydraulic cylinders are made of strong materials, which makes them very durable and able to withstand heavy loads.

Versatility
Double acting hydraulic cylinders can be used in a variety of applications, from lifts and cranes to industrial machines.

Parts of Double Acting Cylinder

Barrel
The first major part of a Double Acting Cylinder is the barrel, which is a smooth cylinder that keeps pressure inside the cylinder. Designed internally to reach the correct diameter, most cylinder barrels have exterior finishes between four and 16 micrometers. Additionally, there are two major types of barrels: single-acting and double-acting. The main difference between the two is that single-acting barrels have welded ports on the end of the base, while double-acting barrels have welded ports at both bases.

Cylinder Head/End Caps
Double Acting Cylinder heads are the endpoints where an extended piston rod delivers productive force. The primary purpose of the cylinder heads is to prevent leakage of pressure from the pressure chamber at both ends of the cylinder. Heads can either be attached to barrels via a screw connection, spring ring, or, less commonly, by welding. Head interiors are finely grooved to coordinate with glands, rod wipers, and piston rod seals.

Hydraulic Cylinder Base/Gland
Also called the rod end, the hydraulic cylinder base is the visible opening that a cylinder rod connects to. The gland is attached with tie rods, bolts, welding, or threading. Hydraulic cylinders incorporating a tie rod utilize high-strength steel rods that are threaded for holding end caps to the barrel. Welded body cylinders do not have tie rods. Instead, the barrel is directly welded to end caps while ports are welded to the cylinder barrel.

Piston Rod

Typically made from cold-rolled steel fortified with hard chrome plating, the piston (cylinder) rod is attached to the cylinder head and the piston. Hard chrome is essential for giving piston rods the ability to last a long time. The piston rod also enhances the seal, which helps prevent leaks.

Seal Gland
Double Acting Cylinder also have a seal gland, which typically have a number of seals within them, including primary, secondary, wear, wiper, scrapper, and static.

Seals
As previously mentioned, there are many seals inside a seal gland. The purpose of each seal is to prevent leaks from occurring beyond the interface of the head and rod. Seals are also exclusively designed to accommodate a cylinder’s speed, working pressure, and operating temperature.

Double Acting Cylinder Working Principle

Rest Position

The first position of the double acting cylinder is the resting stage. During this stage, the piston is found inside the cylinder where the rod is retracted. The two chambers found on both sides of the piston contain atmospheric air.

Extension Stroke

The next stage involves initiating the extension stroke. Compressed air goes through one of the chambers through the inlet port, applying pressure on one side of the piston. As a result, there is resistance that pushes the piston outwards, together with the attached rod. The movement forces the rod outside the cylinder, allowing it to perform the desired job effortlessly. The air on the opposite side exits through the outlet port. The process is smooth and controlled.

Mid-Stroke

During the extension process, the piston reaches the maximum level. Here, the supply of compressed air to the top chamber will come to a halt. It may also be regulated to control the piston’s speed during movement.

Retraction Stroke

The retraction process involves pulling the rod and piston back to the first stage. It happens when compressed air passes through the opposite chamber through the inlet port. The pressure allows the piston to go back in the opposite direction. As this happens, the rod retracts back into the cylinder. On the other hand, air from the first chamber exits through the outlet port. At this stage, seals are also important during pressure regulation. They prevent air leakage and pressure differentials accordingly.

End of Stroke

After retraction, the cylinder goes back to the resting stage. Make sure there are cushioning devices in place to control the piston’s speed during each stage. It’s the best way to reduce the overall impact and delay the wear and tear.

Control and Regulation

A pneumatic control system is in place for regulation and control of the entire process. It ensures that compressed air is available in the relevant chambers at all times. Additionally, it ensures repeatable and precise linear motion effortlessly.

Double Acting Cylinder Function

Bi-Directional Actuation
Imagine having a versatile component in your system that can push and pull simultaneously. That’s exactly what a double acting cylinder does. Simply put, when you want the piston inside the cylinder to move outwards, the cylinder pushes it. On the other hand, when you want the piston to move inwards, the cylinder pulls it. The process is unique, especially with the bi-directional force aspect. It allows the cylinder to be adapted for tasks that require back-and-forth movement.

Conversion of Fluid Energy to Mechanical Motion
Double acting pneumatic cylinders can convert fluid energy to mechanical motion. It is a special skill that allows pressurized liquid power into actual movement. The cylinder is very versatile. It makes things move by using the energy stored in pressurized fluids such as oil and water. When fluid goes through one part of the cylinder, it will immediately become energized. This energy will be converted into a pull or push action, creating movement. It is an important function that comes in handy in various industries.

Precise Positioning
One of the key roles of double acting cylinders is precise positioning. They move where they need to be with the highest level of accuracy. If you have any machine, you may demand that a specific component is always at a specific point. A double acting cylinder ensures that this movement is accurate, consistent and reaches the same position. Achieving accurate and recurrent linear motion is important. This allows the cylinder to handle intricate processes or anything needing meticulous alignment.

Force Generation
Double acting pneumatic cylinders have a force generation function that creates power. They act like devices that can pull or push heavy things. The strength of these cylinders comes from pressurizing one side of the cylinder, while the other one releases pressure. It is a simple yet effective process that results in bidirectional force. The versatility of these cylinders makes them applicable to different systems. Since it’s not limited to one direction, it can exert force during extension or retraction.

Integration With Control Systems
Besides mechanical actuation, double acting cylinders also work perfectly in control systems. Here, they regulate the pressure and flow of fluid. The process allows fine-tuned control of the double-acting cylinder movement. It is a useful integration, especially in applications requiring coordinated movements and precise adjustments. The mechanical actuation aspect and advanced control feature improve the efficiency of these cylinders in any industrial setting.

Dynamic Response
Yet another unique characteristic, double acting cylinders also showcase dynamic response. This refers to their swift reactions to pressure differentials. This feature comes in handy where fast response and agility are important. These cylinders can respond dynamically to different conditions. As such, they can adapt quickly to any condition without compromising precision and efficiency. Simply put, these cylinders can operate in a dynamic environment seamlessly.

Controlled Movement
Finally, these cylinders can control how they move. They can adjust the speed and force of their movement without sacrificing the operation. A double acting pneumatic cylinder ensures that the piston’s movements are calculated and controlled.

General Signs That Your Double Acting Cylinder Needs Repair

Actuating Too Slowly or Failing to Actuate at All
If nothing is moving, it's a pretty clear indication that there's something wrong. It's essential to monitor the actuating pressure to avoid a full breakdown of the system.‍

A Higher-Than-Normal Pressure is Required to Actuate
If the control line is too small or the metering choke valve isn't working, it will usually result in low pilot control pressure. ‍

Hissing Noises
Hissing sounds coming from the air cylinder are a sign of a leak in the system. A damaged rod seal, damaged piston, or worn-out rod can cause this leak, leading to a loss of pressure and a decrease in the cylinder's performance.‍

Intermittent Start-Up
If air cylinders are overworked and overloaded, it will cause stress and higher friction in the seals. Actuators can fall apart as the rod ends bend or even break. When a system includes speed-control or energy-absorbing devices, it is possible to experience pressure spikes that exceed normal system pressures.‍

Load Pulsing
Cylinders generally run smoothly and almost silently. If that's not the case, something is probably in need of repair. ‍

Visual Corrosion or Premature Wear
These signs of damage on the cylinder body or end caps can occur due to exposure to harsh environmental conditions, such as high humidity, heat, or chemicals. These conditions can lead to rust, erosion, or pitting, compromising the cylinder's structural integrity and eventually leading to failure.

Typical Causes of Double Acting Cylinder Failure

Side Loading

If your Double Acting Cylinder is failing, the most likely culprit is side loading. When pressure is applied laterally to the axis it can cause a number of problems that will ultimately result in failure including uneven or accelerated piston rod and bearing wear, seal failure, and cylinder tube scoring, among others.

Insufficient Lubrication

If you want to avoid any problems with your Double Acting Cylinder, be sure to maintain proper lubrication at all times. The seals within the cylinder require thorough and constant lubrication or else they will dry out and fail.

Contamination

Another factor that could lead to Double Acting Cylinder failure is contamination. Contaminants can restrict free movement within the cylinder by blocking the operating parts. This will not only reduce the overall functionality of the cylinder but also potentially lead to total system failure.

Synchronization Issues

Any system with more than one Double Acting Cylinder requires perfect synchronization of each component in order to work effectively. In order to maintain the synchronization of a complex system like this, there are a number of practices and methods in place that require careful monitoring and management.

Exceeding Operational Limits

Double Acting Cylinder failure is inevitable when you're operating it outside of the intended, optimal performance range. Exceeding these limits means the cylinder is exposed to excessive loads that stress the internal components of the cylinder. This leads to poor performance and almost always a premature failure. Preventative checks and maintenance can help you operate within the correct parameters and avoid this issue.

Applications of Double Acting Cylinder

Machinery and Equipment
Double acting cylinders play a critical role in numerous industrial machines and equipment. For instance, hydraulic presses control the movement of the press ram. Here, they can guarantee accurate forming, shaping, and stamping. Additionally, they are used in lifting, clamping, pulling or pushing machines.

Agricultural Machinery
Double acting cylinders also have a role to play in the food we eat. They are found in tractors and other agricultural equipment for many functions. For instance, double acting cylinders raise and lower specific components of these machines.

Aerospace Industry
Double acting cylinders are used in aircraft systems. They are used in the extension and retraction of landing gear components and mechanisms. They also contribute to the operation of control surfaces. This improves the maneuverability of aircraft.

Automotive Manufacturing
Automotive assembly also involves the use of double acting cylinders. They are used in processes such as material transfer, welding and positioning. The cylinders improve the speed of the manufacturing process. They also play a key role in improving the overall efficiency of the automotive manufacturing process. All repeatable movements are accurate and unique, thanks to double acting pneumatic cylinders.

Material Processing and Handling
Any industry with processes such as lifting, sorting and conveying, relies on double acting cylinders. As such, they come in handy in material processing and handling industries. These cylinders are used in conveyor systems to move products in the assembly line effortlessly.

Frequently Asked Questions

Q: What is a double-acting cylinder, and what are its primary applications?

A: A double-acting cylinder is a pneumatic or hydraulic actuator capable of producing linear motion in two directions—extension and retraction. It is widely used in industrial, automotive, and robotic applications where precise control over force and motion is required.

Q: How does a double-acting cylinder differ from a single-acting cylinder?

A: Unlike a single-acting cylinder that relies on a spring or external force to return to its original position, a double-acting cylinder has ports on both sides, allowing pressurized fluid to enter on either side of the piston, enabling motion in both directions.

Q: What are the main components of a double-acting cylinder?

A: The main components of a double-acting cylinder include the cylinder barrel, piston, piston rod, head, seals, and ports for fluid entry and exit. The cylinder barrel houses the piston and piston rod, while the head attaches to the cylinder barrel and contains the ports. Seals are used to prevent fluid leakage and ensure smooth operation.

Q: How does a double-acting cylinder produce linear motion?

A: Linear motion in a double-acting cylinder is produced by the differential pressure created when pressurized fluid is introduced into one side of the cylinder, pushing the piston in that direction. When the fluid is exhausted from that side and introduced into the other side, the piston is pushed in the opposite direction, resulting in linear motion.

Q: What factors determine the force exerted by a double-acting cylinder?

A: The force exerted by a double-acting cylinder is determined by the pressure of the working fluid and the effective area over which the pressure acts. The effective area is the area of the piston face multiplied by the ratio of the areas on either side of the piston if there is a difference in area due to the piston rod.

Q: What is the role of seals in a double-acting cylinder?

A: Seals in a double-acting cylinder play a crucial role in preventing fluid leakage and ensuring smooth operation. There are typically three types of seals: piston seals, rod seals, and cushion seals. Piston seals prevent fluid from leaking past the piston, rod seals prevent fluid from leaking along the piston rod, and cushion seals provide a cushioning effect at the ends of the stroke to reduce wear and noise.

Q: How are double-acting cylinders controlled?

A: Double-acting cylinders are typically controlled using valves that regulate the flow of fluid into and out of the cylinder. Solenoid valves, manual valves, and proportional valves are common types of valves used to control cylinder motion. By controlling the duration and pressure of the fluid entering each port, precise control over the speed and force of the cylinder's extension and retraction can be achieved.

Q: What are the advantages of using a double-acting cylinder over a single-acting cylinder?

A: The primary advantage of using a double-acting cylinder over a single-acting cylinder is its ability to produce linear motion in two directions without the need for a separate return mechanism. This makes double-acting cylinders more efficient and controllable, allowing for precise control over force and motion. Additionally, double-acting cylinders can generate higher forces due to the larger effective area over which the pressure acts.

Q: What are the disadvantages of using a double-acting cylinder?

A: The primary disadvantages of using a double-acting cylinder are its complexity and higher cost compared to a single-acting cylinder. Double-acting cylinders have more moving parts and seals, which can lead to increased maintenance requirements and potential failure points. Additionally, the presence of multiple ports and valves can make the system more complex to design and troubleshoot.

Q: How is a double-acting cylinder mounted and connected?

A: Double-acting cylinders are typically mounted using flanges, brackets, or clevises attached to the head or base of the cylinder. The piston rod is connected to the moving part of the machine or mechanism being actuated using a variety of methods such as threaded connections, eye bolts, or clevis pins. Proper mounting and connection are critical for ensuring smooth operation and preventing excessive stress on the cylinder components.

Q: What are the common causes of failure in double-acting cylinders?

A: Common causes of failure in double-acting cylinders include seal wear or failure, rod bending or breakage, piston wear or scoring, and cylinder barrel distortion or corrosion. Seal wear or failure can result in fluid leakage and reduced performance, while rod bending or breakage can occur due to excessive loads or improper mounting. Piston wear or scoring can be caused by contaminated fluid or excessive heat, and cylinder barrel distortion or corrosion can occur due to environmental conditions or prolonged use.

Q: How are double-acting cylinders maintained and serviced?

A: Regular maintenance and service of double-acting cylinders are essential for ensuring optimal performance and longevity. This includes inspecting the seals, rods, pistons, and cylinder barrel for wear or damage, replacing worn or failed components, and cleaning and flushing the system to remove contaminants. Additionally, lubricating the moving parts and checking the alignment and mounting of the cylinder are important steps in maintaining double-acting cylinders.

Q: What are the different types of double-acting cylinders?

A: There are several types of double-acting cylinders, including standard cylinders, telescopic cylinders, rotary cylinders, and magnetic cylinders. Standard cylinders are the most common type and consist of a single barrel with a piston and rod. Telescopic cylinders have multiple nested barrels that allow for greater stroke lengths in a smaller space. Rotary cylinders produce rotational motion rather than linear motion. Magnetic cylinders incorporate magnets and sensors to provide feedback on the position and force of the cylinder.

Q: How do double-acting cylinders compare to other types of actuators?

A: Double-acting cylinders are one type of actuator among many, including electric motors, pneumatic motors, hydraulic motors, and linear actuators. Each type of actuator has its strengths and weaknesses in terms of force output, speed, precision, cost, and ease of control. Double-acting cylinders are particularly well-suited for applications requiring high forces and precise control over linear motion, such as in robotic arms or construction equipment.

Q: What are the design considerations for double-acting cylinders?

A: Design considerations for double-acting cylinders include selecting the appropriate size and type of cylinder based on the required force and stroke length, choosing the correct materials and seals to withstand the operating environment, and designing the system for easy maintenance and service. Additionally, factors such as the speed and control requirements of the application, the available space and budget constraints, and the compatibility with existing equipment and systems must be considered during the design process.

Q: How do double-acting cylinders handle shock loads and vibration?

A: Double-acting cylinders can handle shock loads and vibration to some extent due to their robust design and the damping effects of the working fluid. However, excessive shock loads and vibration can cause premature wear and failure of the cylinder components. To mitigate these effects, designers may incorporate features such as cushioning at the ends of the stroke, vibration dampers, or specially designed piston and rod assemblies to absorb and dissipate energy.

Q: What are the environmental considerations for double-acting cylinders?

A: Environmental considerations for double-acting cylinders include exposure to temperature extremes, moisture, corrosive substances, and abrasive particles. These factors can affect the performance and longevity of the cylinder components.

Shenzhen Dallast Technology Co., Ltd. is one of the most professional double acting cylinder manufacturers and suppliers in China, specialized in providing high quality customized products with competitive price. We warmly welcome you to buy cheap double acting cylinder for sale here from our factory. Also, discount information is available.

Double Acting Cylinder, bucket tilt cylinder, 2 Way Hydraulic Cylinder

Send Inquiry