China high quality Factory Superior Performance Hydraulic Cylinders Double Acting Hydraulic Cylinder in Landscape Forestry vacuum pump booster

Product Description

Knuckleboom loaders have become indispensable in the material handling industry, providing efficient and versatile solutions for various applications.

One of the key components that empower these machines is the hydraulic cylinder. With its robust design and exceptional power, the hydraulic cylinder plays a crucial role in enhancing the performance and functionality of knuckleboom loaders.

The integration of hydraulic cylinders in knuckleboom loaders has revolutionized the material handling industry.

Hydraulic cylinders are essential components in the operation of wheel skidders, which are widely used in forestry and construction industries. These powerful machines are designed to efficiently transport and load heavy logs and debris in rugged terrains.

The hydraulic cylinders in wheel skidders are responsible for providing the necessary force and control to perform various tasks, making them vital for the machine’s overall performance and productivity,enabling efficient and precise operation in forestry and construction industries.

Their ability to generate high forces, adjustability, and durability make them indispensable for lifting, carrying, and maneuvering heavy loads in challenging terrains.

Hydraulic cylinders are essential components in track feller bunchers, heavy-duty machines used in the forestry industry for tree harvesting and processing. These cylinders play a vital role in various functions of the machine, providing the necessary power and control for efficient operations.

Hydraulic cylinders are used for the stabilization and leveling of the track feller buncher. These cylinders help maintain the stability of the machine on uneven terrain, ensuring safe and secure operations. They allow the machine to adjust its position and balance to overcome obstacles and maintain stability during tree cutting and handling.

Hydraulic cylinders play a vital role in the operation of wheel feller bunchers, which are powerful machines used in the forestry industry for tree harvesting and processing.

These cylinders are essential for various functions, such as controlling the cutting head, the boom arm, and the grapple. By exerting hydraulic pressure, these cylinders provide the necessary force and precision to efficiently cut and process trees. 

About Us

Established in  1988 , HangZhou LD Machinery Co, LTD. (hereinafter referred to “LD”) is a leading manufacturer specializing in the design, research, development, manufacture and marketing in the hydraulic industry. Being one of major suppliers of customized components and cylinders for manufacturers spreaded all over the world, the company is committed to offer high quality products with competitive prices and excellent service worldwide.

Headquartered in HangZhou City, ZHangZhoug Province, the company wholly owns a subsidiary production factory named “HangZhou YUEWEI Hydraulic Technology Co., Ltd”, which covers an area of more than   380,000 square meters , possesses abundant technical strength and sound production management system, superior machining production equipment, strict and effective quality control system, advanced and excellent inspection instruments.

More than   35  years experience in machining industry, with over   10  experienced technical engineers and   150  skilled workers, LD has a senior engineering technical team with special skills and rich experience in product design, casting, forging, and CNC machining, can handle special material, structure, defect and processing, meet the evolving needs, and provide optimal solution and real one-stop service to customers.
 

Hydraulic Cylinder Producing Process

Step1: Quality Control on Raw Material
We have our own lab in factory, inspect the raw material and do the test. For every batch of material we received, we will ask supplier provide their certificate, and then cut them to do the test again to see if the results match the certification. Also, every batch we received, we will cut them into pieces to check the air bubbles. Once they are all qualified, we will accept it, and all detail information will be recording in our ERP system. We will also pay lot of attention on the salt spray test for chrome rod. Every month, we will cut the material, put them into test machine to see if it reach the requirement. All the result will be recorded at our QC department. If customer need, we can provide it.

Step2: Quality Control on Machining

we start doing components machining from 1988 with 36 years experience now and insist doing 100% inspection. We spend lots of money, invest on auto robots and machines. Now half of the producing line is by robot so that we can ensure our quality be stable good. For every part of the cylinder, we do 3 times inspecting. Firstly, workers will do self inspection. Secondly, we have tour-hour inspection checking the products, 2 times in the morning and 2 times in the afternoon, make sure that every step is good. After the products are all completed, we will do 100% inspection. For thread, for the tolerance, everything, we need double check. Also, we have specific warehouse just for the measuring tools. Every inspector have their own measuring tool and we will check the measuring tools regularly to make sure they are all in good condition, so that the measuring results will be convincing.

Step3: Quality Control on Welding

We are qualified to AWS certification, which is very popular in North American market. First, for the visual test, we will make sure that every components are welded good, look beautiful. And the second, we need to check the penetration. We have more than 15 years experience, we do know what kind of designing angle can make the cylinder welding strong. Once we finish the first article, we will cut it and analyse the welding to see if it is fulfill the groove. And then do the radiographic testing to make sure there is no gap inside. What’s more, we will do the ultrasonic test to check the program for the robot. Now 80% of welding is doing by robot. Once the program confirmed, no 1 can change it unless the welding manager, and they only have 5% right.

Step4: Quality Control on Assembling
For assembling, we have some difference with others. The brand we uses for seals are all those famous brand like Aston, Parker, Hallite. The cylinder we give to our customer has 2 years warranty. For our company, we engrave our part number and manufacturing date for the quality warranty. So no matter for seals or any others, as long as they are parts of cylinder, if it is under 2 years, we will take responsibility for them. And we will do the test for every cylinder like for pressure after we finish assembling.

Step5: Quality Control on Painting
We have our half auto painting line. Right now, we can paint about 1500 cylinders per day, which is about 1 container. Before we do the painting, we will do the wash first and for every cylinder, we will test for hardness, thickness and adhesion to make sure the painting are all good, which will be recorded into OQC report, print out and stick on the box, ship to you with your products.

Step6: Hydraulic Cylinder Packing
For every cylinder, we have the stick to show the detail information like bore size, stroke and working pressure. And we will use individual plastic bag packing. If customer need, we can also use individual carton box packing. We will fasten 1 floor after 1 floor with plat, so customer can only cut what they need and other layer will still be fasten. Moreover, there will be plywood pallet or plywood box for customer choosing. We will also send the loading picture to customer after we ship them to make sure everything is well loaded in China.

Packing Reference

Order Process

Enterprise Features

FAQ
Q1. What is LD product’s quality assurance?
100% inspection for each product before shipping with inspection rereport for tracking.

Q2: How long is the warranty on LD products?
The warranty is 2 years for general products since the date of shipment.

Q3: How LD deal with the quality problem during warranty period?
1. LD will take the corresponding cost caused by customer local reparing. 
2. LD will provide the product by free if the repair cost is higher than the product value, but the freight involved shall be borne by customer side.

Q4: How to ensure the order can be shipped on time?
LD will send the “production schedule” every week after receiving customers’ orders. If any delays, LD will inform customers 3 weeks in advance, so as to facilitate the customer to arrange the schedule.

Q5: Does LD offer delivery service?
Yes. LD has deep cooperation with logistics companies all over the world to provide customers with quick and convenient “Door-to-Door services”,including sea, air and express.

Q6: How LD control the product quality?
1. Raw materials: We will test the material of each batch of raw materials we receive, and the piston rod will be tested with salt spray. This is to ensure that the material of our products meets the requirements at the beginning.
2. Processing: We have the leading machining equipment, and obtained ISO9001 certification.
3. Welding: Our factory is equipped with welding robots, and has obtained the AWS certification.
4. Assembly pressure test: 100% testing with OQC report for cHangZhou. The seals we use are: Hallite, Aston and Gapi

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Certification: ISO9001
Pressure: Medium Pressure
Work Temperature: Normal Temperature
Acting Way: Double Acting
Working Method: Straight Trip
Adjusted Form: Regulated Type
Samples:
US$ 300/Piece
1 Piece(Min.Order)

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Customization:
Available

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double acting hydraulic cylinder

What safety considerations are important when working with double-acting hydraulic cylinders?

Working with double-acting hydraulic cylinders requires careful attention to safety to prevent accidents and ensure the well-being of operators and nearby personnel. Here are some important safety considerations:

1. Proper Training and Familiarity: Operators and maintenance personnel should receive proper training on the safe operation and maintenance of hydraulic systems, including double-acting cylinders. They should be familiar with the cylinder’s functions, controls, and potential hazards. Adequate training helps prevent errors and promotes safe handling practices.

2. System Design and Installation: The hydraulic system, including the double-acting cylinder, should be designed and installed by qualified professionals following appropriate industry standards and guidelines. Proper design ensures the system’s integrity, efficiency, and safety. It is essential to consider factors such as load capacity, pressure ratings, and proper component selection during system design.

3. Pressure Relief and Emergency Stop: Hydraulic systems should incorporate pressure relief valves or devices to prevent excessive pressure buildup. These safety mechanisms protect the cylinder from overloading and potential failure. Additionally, an emergency stop or shutdown system should be in place to quickly halt the hydraulic operation in case of an emergency or hazardous situation.

4. Regular Maintenance and Inspection: Routine maintenance and inspection of double-acting hydraulic cylinders are crucial for identifying and addressing potential issues before they lead to accidents or failures. Regular checks should include inspecting for leaks, damaged seals, loose connections, and signs of wear. Proper lubrication, fluid level checks, and filter replacements should also be part of the maintenance routine.

5. Lockout/Tagout Procedures: When performing maintenance, repair, or adjustment tasks on hydraulic systems, proper lockout/tagout procedures must be followed. Lockout/tagout ensures that all energy sources are isolated and the system is in a safe, de-energized state to prevent unexpected movement or activation of the hydraulic cylinder. Lockout/tagout procedures should be clearly defined and strictly adhered to.

6. Personal Protective Equipment (PPE): Operators and personnel working with double-acting hydraulic cylinders should wear appropriate personal protective equipment (PPE). This may include safety glasses, gloves, protective clothing, and steel-toe boots. PPE helps protect against potential hazards such as hydraulic fluid leaks, flying debris, or accidental contact with moving parts.

7. Risk Assessment and Hazard Mitigation: Prior to working with double-acting hydraulic cylinders, a thorough risk assessment should be conducted to identify potential hazards and implement appropriate hazard mitigation measures. This assessment should consider factors such as pressure, force, pinch points, and potential for hydraulic fluid injection injuries. Safeguards such as guards, warning signs, or interlock systems should be implemented accordingly.

8. Proper Lifting and Support: When lifting or supporting loads using double-acting hydraulic cylinders, it is essential to follow safe lifting practices. This includes ensuring that the load is within the cylinder’s rated capacity, using proper rigging techniques, and providing adequate support to prevent unintentional movement or instability.

9. Communication and Signaling: Clear communication and signaling protocols should be established when working with hydraulic systems. Operators and personnel should use standardized signals and verbal communication to ensure coordination and prevent accidents caused by miscommunication or misunderstanding.

10. Emergency Preparedness: Adequate emergency preparedness measures should be in place, including the availability of first aid kits, fire extinguishers, and emergency evacuation plans. Personnel should be trained on emergency response procedures to handle potential incidents effectively.

By adhering to these safety considerations, operators and personnel can minimize risks associated with working with double-acting hydraulic cylinders and create a safer working environment.

double acting hydraulic cylinder

How does a double-acting hydraulic cylinder contribute to precise force application?

A double-acting hydraulic cylinder plays a crucial role in enabling precise force application. Here’s a detailed explanation:

1. Control over Force Generation: Double-acting hydraulic cylinders provide precise control over the force they generate. By supplying pressurized hydraulic fluid to one side of the cylinder, the piston extends, exerting force in a specific direction. By supplying fluid to the other side, the piston retracts, creating an opposite force. The hydraulic system can be designed with valves, control systems, and pressure regulation mechanisms to adjust and fine-tune the force output. This level of control allows operators to apply the necessary force with precision, whether it’s for lifting, pushing, pulling, or any other task.

2. Adjustable Pressure: The hydraulic system powering the double-acting cylinder allows for adjustable pressure settings. By regulating the hydraulic pressure, operators can precisely control the force output of the cylinder. This adjustability is especially useful when handling delicate or sensitive materials that require a specific amount of force to avoid damage. By fine-tuning the pressure, operators can ensure that the force applied is precisely tailored to the requirements of the task at hand.

3. Smooth and Gradual Force Application: Double-acting hydraulic cylinders facilitate smooth and gradual force application. The hydraulic fluid in the system is incompressible, which means that force is distributed evenly throughout the system. As the hydraulic fluid is pressurized, the force is transmitted to the piston, resulting in a smooth and controlled movement. This allows for gentle and gradual force application, minimizing the risk of sudden or jarring movements that could damage the equipment or the materials being handled.

4. Position and Stroke Control: Double-acting hydraulic cylinders provide precise control over the position and stroke of the piston. The hydraulic fluid can be regulated to stop the piston at specific positions, allowing for precise positioning of loads or equipment. Additionally, the stroke length of the cylinder can be adjusted to control the range of motion. This level of control over position and stroke enables operators to apply force with precision, ensuring accurate and repeatable results in various applications.

5. Feedback and Monitoring: Advanced hydraulic systems can incorporate feedback mechanisms and sensors to monitor and provide real-time information about the force being applied by the double-acting hydraulic cylinder. This feedback allows operators to monitor the force levels, make adjustments if necessary, and ensure that the desired force is being accurately applied. By having access to this information, operators can maintain precise control over force application throughout the operation.

Overall, through control over force generation, adjustable pressure settings, smooth and gradual force application, position and stroke control, as well as feedback and monitoring capabilities, double-acting hydraulic cylinders contribute significantly to precise force application. Their ability to provide controlled and tailored force output makes them essential components in applications where accuracy and precision are paramount.

double acting hydraulic cylinder

How does a double-acting hydraulic cylinder contribute to efficient force generation?

A double-acting hydraulic cylinder is designed to contribute to efficient force generation in hydraulic systems. Here’s a detailed explanation:

1. Bidirectional Force: A double-acting hydraulic cylinder is capable of generating force in both the extension and retraction strokes. When hydraulic fluid is applied to the cylinder’s cap end, it pushes the piston, creating a pushing force. Conversely, when hydraulic fluid is applied to the rod end, it pulls the piston, generating a pulling force. This bidirectional force capability allows for versatile and efficient force generation in various applications.

2. Mechanical Advantage: The design of a double-acting hydraulic cylinder provides a mechanical advantage that contributes to efficient force generation. The piston’s larger surface area on the cap end compared to the rod end allows for a greater force output during the extension stroke. This mechanical advantage amplifies the force generated by the hydraulic pressure, enabling the cylinder to exert significant pushing or pulling force with relatively low hydraulic pressure input.

3. Control over Force and Speed: Double-acting hydraulic cylinders offer precise control over the force and speed of the piston’s movement. By regulating the flow and pressure of the hydraulic fluid, the operator can adjust the force exerted by the cylinder to match the requirements of the application. This control allows for efficient force generation by optimizing the cylinder’s performance for specific tasks.

4. Efficient Energy Utilization: Double-acting cylinders are known for their efficient energy utilization. When the cylinder is extending or retracting, the opposite side of the piston can act as a reservoir, storing the hydraulic fluid. This stored energy can be utilized in the opposite stroke, resulting in improved efficiency. By recycling the energy within the system, double-acting cylinders maximize the utilization of input power, contributing to efficient force generation.

5. Compact and Space-Saving Design: Double-acting hydraulic cylinders are compact and space-saving, making them suitable for applications with limited space. Their efficient force generation allows for the use of smaller cylinder sizes without compromising performance. This compact design minimizes the footprint of the hydraulic system while still delivering the required force output, contributing to efficient use of available space.

6. Durability and Longevity: Double-acting hydraulic cylinders are built to withstand high-pressure applications and heavy loads. Their robust construction, often using materials such as steel or aluminum, ensures durability and longevity. By maintaining their performance over time without significant wear or failure, these cylinders contribute to efficient force generation throughout their operational lifespan.

In summary, a double-acting hydraulic cylinder contributes to efficient force generation through its bidirectional force capability, mechanical advantage, precise control over force and speed, efficient energy utilization, compact design, and durability. These features make double-acting cylinders highly effective in a wide range of applications where efficient and reliable force generation is crucial.

China high quality Factory Superior Performance Hydraulic Cylinders Double Acting Hydraulic Cylinder in Landscape Forestry   vacuum pump booster	China high quality Factory Superior Performance Hydraulic Cylinders Double Acting Hydraulic Cylinder in Landscape Forestry   vacuum pump booster
editor by CX 2024-04-11