Product Description

 

Hydraulic Cylinder used on Front Loader
Hydraulic cylinders are an integral part of many machines and devices, and front loaders are no exception. Front loaders, also known as front end loaders or simply loaders, are heavy equipment machines used for moving, handling, and lifting materials such as dirt, sand, rocks, and other construction debris. The hydraulic cylinder in a front loader is a key component that enables the machine to perform its various functions. It is responsible for lifting the bucket and moving it into position to scoop up material. The hydraulic cylinder also allows the bucket to be lowered and dumped, releasing the material at the desired location. The combination of the hydraulic cylinder and the front loader is a force to be reckoned with. They work together seamlessly, enabling the loader to perform tasks quickly and efficiently. The hydraulic cylinder’s strength and precision make it an indispensable part of the front loader, ensuring its smooth operation and reliability.

 

Hydraulic Cylinder used on Side Loader
The side loader garbage truck is a remarkable piece of engineering, designed with efficiency and hygiene in mind. The truck’s unique design, which includes a hydraulic cylinder, allows it to handle large volumes of trash with ease. The hydraulic cylinder in a side loader is made up of 2 main parts: the cylinder tube and the piston. The cylinder tube is a hollow metal cylinder that contains the hydraulic fluid. The piston is a CHINAMFG metal rod that slides within the cylinder tube.  The hydraulic cylinder is the driving force behind the side loader garbage truck’s capabilities. It powers the lifting and tilting mechanisms that are essential for emptying trash containers into the truck’s body. The cylinder uses pressurized hydraulic fluid to generate the force necessary to manipulate the trash container.

 

Hydraulic Cylinder used on Rear Loader
The rear loader garbage truck is a specialized vehicle designed to handle the collection and disposal of trash in an efficient and hygienic manner. It features a unique loading mechanism that allows trash to be emptied directly into the truck’s body from the side, rather than from the rear or top.The hydraulic cylinder is what powers the trash container lifting mechanism. It uses pressurized hydraulic fluid to generate the force needed to tilt and empty the trash container into the truck’s hopper. This design allows for quick and effortless emptying, reducing the time and effort needed for trash collection.The hydraulic cylinder in a rear loader must be able to withstand significant forces and pressures, as it is responsible for lifting heavy loads and repeatedly performing this task over time. 

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$ 299/Piece
1 Piece(Min.Order)

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Customization:
Available

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single acting hydraulic cylinder

How does a single-acting hydraulic cylinder handle variations in environmental conditions?

A single-acting hydraulic cylinder is designed to handle variations in environmental conditions effectively. Here’s a detailed explanation:

1. Sealing Mechanisms: Single-acting hydraulic cylinders incorporate sealing mechanisms to prevent the ingress of contaminants and protect the internal components from environmental factors. The primary sealing component is typically a piston seal or rod seal, which forms a barrier between the hydraulic fluid and the external environment. These seals are designed to withstand temperature variations, moisture, dust, dirt, and other contaminants that may be present in the surrounding environment.

2. Material Selection: The materials used in the construction of single-acting hydraulic cylinders are carefully chosen to withstand different environmental conditions. Cylinder components are often made of materials such as steel, stainless steel, or corrosion-resistant alloys that offer durability and resistance to rust, corrosion, and chemical exposure. This ensures that the cylinder can operate reliably even in harsh environments, such as marine, offshore, or industrial settings.

3. Temperature Compensation: Single-acting hydraulic cylinders can handle variations in temperature through temperature compensation measures. Hydraulic fluids exhibit changes in viscosity with temperature fluctuations. To maintain consistent performance, the hydraulic system may incorporate temperature compensation mechanisms, such as adjusting the pressure or flow rate, to compensate for the effects of temperature on the fluid’s properties. This helps ensure that the cylinder operates effectively across a range of temperature conditions.

4. Lubrication and Maintenance: Proper lubrication is essential for the smooth operation of a single-acting hydraulic cylinder, especially in varying environmental conditions. Lubricants are used to reduce friction, protect seals, and ensure optimal performance. The choice of lubricant depends on the operating temperature range and the specific requirements of the cylinder. Regular maintenance, including lubrication inspections and seal replacements, helps maintain the cylinder’s performance and extends its service life.

5. Environmental Protection: In certain applications or environments where the hydraulic cylinder may be exposed to extreme conditions, additional measures may be taken to enhance its protection. This can include the use of protective covers, boots, or bellows to shield the cylinder from debris, moisture, or extreme temperatures. These protective measures help prolong the cylinder’s lifespan and maintain its functionality under challenging environmental conditions.

6. Compliance with Standards: Single-acting hydraulic cylinders are often designed and manufactured in compliance with industry standards and regulations. These standards define minimum requirements for factors such as performance, safety, and environmental conditions. By adhering to these standards, hydraulic cylinders are engineered to handle variations in environmental conditions while ensuring safe and reliable operation.

7. Application-Specific Considerations: Depending on the specific application and environmental conditions, additional features or modifications may be incorporated into the design of single-acting hydraulic cylinders. For example, in marine or offshore applications, cylinders may be equipped with corrosion-resistant coatings or special seals to withstand saltwater exposure. In high-temperature environments, heat-resistant materials or cooling systems may be employed.

In summary, single-acting hydraulic cylinders handle variations in environmental conditions through sealing mechanisms, appropriate material selection, temperature compensation measures, lubrication and maintenance practices, environmental protection measures, compliance with standards, and application-specific considerations. These design considerations and protective measures ensure the cylinder’s performance, longevity, and reliability even in challenging environmental conditions.

single acting hydraulic cylinder

How does a single-acting hydraulic cylinder contribute to load distribution and control?

A single-acting hydraulic cylinder plays a crucial role in load distribution and control. Here’s a detailed explanation:

Load distribution refers to the equitable distribution of force across multiple points or components in a system. Load control involves regulating and managing the force applied to the load. Single-acting hydraulic cylinders contribute to both load distribution and control in hydraulic systems. Here are some key points on how they achieve this:

1. Force Transmission: Single-acting hydraulic cylinders act as force-transmitting devices in hydraulic systems. They convert hydraulic energy into linear force, which is then applied to the load. By transmitting force to the load, the cylinders distribute the applied force across the load-bearing components. This ensures even distribution of force, preventing localized stress concentrations and promoting balanced load handling.

2. Load Sharing: In systems where multiple hydraulic cylinders are used, load sharing is essential to maintain uniform force distribution. Single-acting hydraulic cylinders can be connected in parallel or series configurations to share the load. Parallel connection allows multiple cylinders to work together, dividing the load proportionally among them. Series connection enables sequential force application, with each cylinder taking a portion of the load. This load sharing capability ensures equal force distribution, enhancing system efficiency and stability.

3. Pressure Regulation: Single-acting hydraulic cylinders contribute to load control through pressure regulation. The hydraulic fluid pressure determines the force exerted by the cylinder. By controlling the pressure through valves or regulators, the force applied to the load can be precisely adjusted. This control allows for accurate load handling and enables fine-tuning of the force applied to different components or stages within a system.

4. Speed Control: Load control also involves regulating the speed at which the load is moved or operated. Single-acting hydraulic cylinders offer speed control capabilities through flow control valves. By adjusting the flow rate of hydraulic fluid entering or exiting the cylinder, the extension and retraction speeds of the piston can be controlled. This feature allows for smooth and controlled movement of the load, preventing sudden or excessive accelerations that may lead to instability or damage.

5. Safety Measures: Single-acting hydraulic cylinders contribute to load control by incorporating safety measures. Pressure relief valves can be integrated into the hydraulic system to protect against overloading. These valves release excess pressure to prevent damage to the cylinder or other system components. By ensuring that the load remains within safe operating limits, the cylinders contribute to load control and help maintain system integrity.

It is important to properly size and select single-acting hydraulic cylinders based on the load requirements and system design. Considerations such as load capacity, pressure ratings, and flow rates should be taken into account.

In summary, single-acting hydraulic cylinders contribute to load distribution and control by transmitting force, sharing loads, regulating pressure, controlling speed, and incorporating safety measures. Their functionality and versatility make them valuable components in hydraulic systems, ensuring efficient and controlled load handling.

single acting hydraulic cylinder

How does a single-acting hydraulic cylinder manage variations in load capacity and weight?

A single-acting hydraulic cylinder is designed to effectively manage variations in load capacity and weight in hydraulic systems. Here’s a detailed explanation:

1. Adjustable Force Output: Single-acting hydraulic cylinders allow for adjustable force output, which enables them to handle variations in load capacity and weight. The force generated by the cylinder can be controlled by adjusting the hydraulic pressure supplied to the pressure chamber. By increasing or decreasing the pressure, the cylinder can generate the necessary force to accommodate different loads and weight requirements.

2. Mechanical Advantage: Single-acting hydraulic cylinders utilize the mechanical advantage of the piston design to manage variations in load capacity and weight. The piston has a larger effective area on the pressure side and a smaller effective area on the return side. This size difference creates a mechanical advantage, amplifying the force output compared to the hydraulic pressure input. As a result, the cylinder can generate a greater force to handle heavier loads.

3. Load-Sensing Control: In some hydraulic systems, load-sensing control mechanisms can be incorporated to further manage variations in load capacity and weight. Load-sensing systems continuously monitor the load on the cylinder and adjust the hydraulic pressure accordingly. This ensures that the cylinder generates the appropriate force based on the actual load, optimizing efficiency and preventing overloading or underutilization.

4. Customizable Cylinder Design: Single-acting hydraulic cylinders can be customized in terms of size, dimensions, and force capacity to match specific load requirements. By selecting the appropriate cylinder size and specifications, variations in load capacity and weight can be effectively managed. Customization ensures that the cylinder is appropriately sized and capable of generating the necessary force to handle the expected loads.

5. System Design Considerations: Proper system design considerations play a crucial role in managing variations in load capacity and weight. The hydraulic system should be designed with the appropriate pump capacity, valve selection, and overall system configuration to ensure optimal performance. By considering the anticipated load variations and weight requirements, the hydraulic system can be designed to accommodate these variations effectively.

6. Safety Factors and Overload Protection: Single-acting hydraulic cylinders are typically designed with safety factors to provide a margin of safety and accommodate variations in load capacity and weight. These safety factors help prevent overloading and ensure the cylinder can handle unexpected increases in load or weight. Additionally, incorporating overload protection mechanisms, such as relief valves or load-limiting devices, adds an extra layer of protection against excessive loads.

In summary, a single-acting hydraulic cylinder manages variations in load capacity and weight through adjustable force output, mechanical advantage, load-sensing control, customizable cylinder design, system design considerations, safety factors, and overload protection. These features and considerations allow the cylinder to effectively adapt to changes in load requirements and ensure reliable and efficient operation within a hydraulic system.

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editor by CX 2024-03-07