China Best Sales Hot Selling Special Energy-Efficient Replaceable Competible Hydraulic Cylinder with ISO9001 with high quality

Product Description

U-Series Hydraulic Dock Leveler
The USeries Hydraulic Dock Leveler is a modern material handling solution, renowned for its simplicity, efficiency, and reliability. At the heart of this exceptional performance lies the hydraulic cylinder, a crucial component that transforms hydraulic energy into the motive force required for leveler operation.

The hydraulic cylinder in the USeries is specifically designed to handle the unique challenges of the material handling industry. Its robust construction and advanced materials ensure durability, while the efficient design promotes maximum force output with minimal energy consumption.

A-Series Hydraulic Dock Leveler
The hydraulic cylinder in the ASeries is specifically designed to withstand the demands of 
continuous use in a wide range of environments. Its robust construction and advanced materials ensure durability, while the efficient design promotes maximum force output with minimal energy consumption.

Furthermore, the cylinder's efficiency is key to maintaining optimal operational speed and precision. Advanced engineering features, such as optimized piston geometry and friction-reducing coatings, enhance the cylinder's performance,contributing to the overall efficiency of the A-Series Hydraulic Dock Leveler.

 

LHP Series Hydraulic Dock Leveler
The hydraulic cylinder in the LHP Series is a master of converting hydraulic pressure into motive force. This force is pivotal in manipulating the leveler's position, whether it's adjusting for height differences or handling heavy loads. Its robust design and construction ensure durability, even under the most rigorous conditions.
The cylinder's role in maintaining consistent and accurate positioning cannot be overstated. Its precision and reliability are paramount in ensuring safe and efficient operation, particularly when handling bulk materials or containers. It counteracts external forces, maintaining stability and preventing unintended movements during operation.

Verse Series Hydraulic Dock Leveler
The hydraulic cylinder, a prime mover in the Verse Series Hydraulic Dock Leveler, is responsible for converting hydraulic energy into mechanical force. This force is then used to raise and lower the dock leveler, enabling it to adapt to the height differences between the dock and the truck bed. The cylinder's design and construction must be robust enough to withstand the rigors of continuous use in a wide range of environmental conditions.
The hydraulic cylinder's performance is crucial for the safe and efficient operation of the dock leveler. It ensures that the leveler plate maintains a consistent and stable position, even under heavy loads. The cylinder's reliability is further enhanced by its ability to counteract any external forces that may act on the leveler, thus preventing unintended movements.

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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After-sales Service: Local Service Support
Warranty: 2 Years Warrenty
Application: Dock Leveler
Lift Mechanism: Scissor Lift
Carrying Capacity: Middle-Level
Moves: Moving
Samples:
US$ 199/Piece
1 Piece(Min.Order)

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Customization:
Available

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hydraulic cylinder

How do hydraulic cylinders handle the challenges of minimizing friction and wear?

Hydraulic cylinders employ several mechanisms and techniques to effectively minimize friction and wear, ensuring optimal performance and longevity. Minimizing friction and wear is crucial for hydraulic cylinders as it helps to maintain efficiency, reduce energy consumption, and prevent premature failure. Here's a detailed explanation of how hydraulic cylinders handle the challenges of minimizing friction and wear:

1. Lubrication:

- Proper lubrication is essential for minimizing friction and wear in hydraulic cylinders. Lubricating fluids, such as hydraulic oils, are used to create a thin film between moving surfaces, reducing direct metal-to-metal contact. This lubricating film acts as a protective barrier, reducing friction and preventing wear. Regular maintenance practices include monitoring and maintaining the appropriate lubricant levels to ensure optimal lubrication and minimize frictional losses.

2. Surface Finishes:

- The surface finishes of components in hydraulic cylinders play a crucial role in minimizing friction and wear. Smoother surface finishes, achieved through precision machining, grinding, or the application of specialized coatings, reduce surface roughness and frictional resistance. By minimizing surface irregularities, the risk of wear and friction-induced damage is significantly reduced, resulting in improved efficiency and extended component life.

3. High-Quality Sealing Systems:

- Well-designed and high-quality sealing systems are crucial for minimizing friction and wear in hydraulic cylinders. Seals prevent fluid leakage and contamination while maintaining proper lubrication. Advanced sealing materials, such as polyurethane or composite materials, offer excellent wear resistance and low friction characteristics. Optimal seal design and proper installation ensure effective sealing, minimizing friction and wear between the piston and cylinder bore.

4. Proper Alignment and Clearances:

- Hydraulic cylinders must be properly aligned and have appropriate clearances to minimize friction and wear. Misalignment or excessive clearances can result in increased friction and uneven wear, leading to premature failure. Proper installation, alignment, and maintenance practices, including regular inspection and adjustment of clearances, help ensure smooth and even movement of the piston within the cylinder, reducing friction and wear.

5. Filtration and Contamination Control:

- Effective filtration and contamination control are essential for minimizing friction and wear in hydraulic cylinders. Contaminants, such as particles or moisture, can act as abrasive agents, accelerating wear and increasing friction. By implementing robust filtration systems and proper maintenance practices, hydraulic systems can prevent the ingress of contaminants, ensuring clean and properly lubricated components. Clean hydraulic fluids help minimize wear and friction, contributing to improved performance and longevity.

6. Material Selection:

- The selection of appropriate materials for hydraulic cylinder components is crucial in minimizing friction and wear. Components subject to high frictional forces, such as pistons and cylinder bores, can be made from materials with excellent wear resistance, such as hardened steel or composite materials. Additionally, selecting materials with low coefficients of friction helps reduce frictional losses. Proper material selection ensures durability and minimized wear in critical components of hydraulic cylinders.

7. Maintenance and Regular Inspection:

- Regular maintenance and inspection practices are vital for identifying and addressing potential issues that could lead to increased friction and wear in hydraulic cylinders. Scheduled maintenance includes lubrication checks, seal inspections, and monitoring of clearances. By promptly detecting and rectifying any signs of wear or misalignment, hydraulic cylinders can be kept in optimal condition, minimizing friction and wear throughout their operational lifespan.

In summary, hydraulic cylinders employ various strategies to handle the challenges of minimizing friction and wear. These include proper lubrication, employing suitable surface finishes, utilizing high-quality sealing systems, ensuring proper alignment and clearances, implementing effective filtration and contamination control measures, selecting appropriate materials, and conducting regular maintenance and inspections. By implementing these practices, hydraulic cylinders can minimize friction and wear, ensuring smooth and efficient operation while extending the overall lifespan of the system.

hydraulic cylinder

Contribution of Hydraulic Cylinders to the Efficiency of Agricultural Tasks like Plowing

Hydraulic cylinders play a significant role in enhancing the efficiency of agricultural tasks, including plowing. By providing power, control, and versatility, hydraulic cylinders enable agricultural machinery to perform tasks more effectively and with greater precision. Let's explore how hydraulic cylinders contribute to the efficiency of plowing and other agricultural tasks:

  1. Powerful Force Generation: Hydraulic cylinders are capable of generating high forces, making them ideal for tasks that require substantial power, such as plowing. The hydraulic system provides pressurized fluid to the cylinders, which convert this hydraulic energy into mechanical force. This force is then utilized to drive plow blades through the soil, overcoming resistance and facilitating efficient soil penetration.
  2. Adjustable Working Depth: Hydraulic cylinders allow for easy and precise adjustment of plow working depth. By controlling the extension or retraction of the hydraulic cylinder, the depth of the plow blades can be adjusted according to soil conditions, crop requirements, or the farmer's preferences. This adjustability enhances efficiency by ensuring optimal soil tillage and minimizing unnecessary energy expenditure.
  3. Responsive Control: Hydraulic systems offer highly responsive control, enabling farmers to make quick adjustments during plowing operations. Hydraulic cylinders respond rapidly to changes in hydraulic pressure and valve settings, allowing for immediate modifications in the plow's position, depth, or angle. This responsiveness enhances efficiency by facilitating on-the-go adjustments based on soil variations, obstacles, or changing field conditions.
  4. Implement Versatility: Hydraulic cylinders enable the attachment of various implements to agricultural machinery, expanding their functionality and versatility. In the case of plowing, hydraulic cylinders allow for the attachment and detachment of plow blades or other tillage implements. This versatility enables farmers to adapt their equipment to different soil types, field sizes, or specific plowing requirements, enhancing efficiency by maximizing the utility of the machinery.
  5. Efficient Time Management: Hydraulic cylinders contribute to time efficiency in agricultural tasks like plowing. With hydraulic systems, farmers can operate plows at higher speeds while maintaining control and precision. The responsive nature of hydraulic cylinders allows for efficient turning, maneuvering, and repositioning of plows, minimizing downtime and optimizing field coverage. This time efficiency translates into increased productivity and reduced overall operational costs.

In summary, hydraulic cylinders significantly contribute to the efficiency of agricultural tasks like plowing. Through powerful force generation, adjustable working depth, responsive control, implement versatility, and efficient time management, hydraulic systems equipped with cylinders enhance the performance and productivity of agricultural machinery. These contributions allow farmers to accomplish plowing tasks more effectively, optimize field operations, and achieve improved overall efficiency in their agricultural practices.

hydraulic cylinder

How do hydraulic cylinders accommodate variations in stroke length and force requirements?

Hydraulic cylinders are designed to accommodate variations in stroke length and force requirements, providing flexibility and adaptability for different applications. They can be tailored to meet specific needs by considering factors such as piston diameter, rod diameter, hydraulic pressure, and cylinder design. Here's a detailed explanation of how hydraulic cylinders accommodate variations in stroke length and force requirements:

1. Cylinder Size and Design:

- Hydraulic cylinders come in various sizes and designs to accommodate different stroke lengths and force requirements. The cylinder's diameter, piston area, and rod diameter are key factors that determine the force output. Larger cylinder diameters and piston areas can generate greater force, while smaller diameters are suitable for applications requiring lower force. By selecting the appropriate cylinder size and design, stroke lengths and force requirements can be effectively accommodated.

2. Piston and Rod Configurations:

- Hydraulic cylinders can be designed with different piston and rod configurations to accommodate variations in stroke length. Single-acting cylinders have a single piston and can provide a stroke in one direction. Double-acting cylinders have a piston on both sides, allowing for strokes in both directions. Telescopic cylinders consist of multiple stages that can extend and retract, providing a longer stroke length compared to standard cylinders. By selecting the appropriate piston and rod configuration, the desired stroke length can be achieved.

3. Hydraulic Pressure and Flow:

- The hydraulic pressure and flow rate supplied to the cylinder play a crucial role in accommodating variations in force requirements. Increasing the hydraulic pressure increases the force output of the cylinder, enabling it to handle higher force requirements. By adjusting the pressure and flow rate through hydraulic valves and pumps, the force output can be controlled and matched to the specific requirements of the application.

4. Customization and Tailoring:

- Hydraulic cylinders can be customized and tailored to meet specific stroke length and force requirements. Manufacturers offer a wide range of cylinder sizes, stroke lengths, and force capacities to choose from. Additionally, custom-designed cylinders can be manufactured to suit unique applications with specific stroke length and force demands. By working closely with hydraulic cylinder manufacturers, it is possible to obtain cylinders that precisely match the required stroke length and force requirements.

5. Multiple Cylinders and Synchronization:

- In applications that require high force or longer stroke lengths, multiple hydraulic cylinders can be used in combination. By synchronizing the movement of multiple cylinders through the hydraulic system, the stroke length and force output can be effectively increased. Synchronization can be achieved using mechanical linkages, electronic controls, or hydraulic circuitry, ensuring coordinated movement and force distribution across the cylinders.

6. Load-Sensing and Pressure Control:

- Hydraulic systems can incorporate load-sensing and pressure control mechanisms to accommodate variations in force requirements. Load-sensing systems monitor the load demand and adjust the hydraulic pressure accordingly, ensuring that the cylinder delivers the required force without exerting excessive force. Pressure control valves regulate the pressure within the hydraulic system, allowing for precise control and adjustment of the force output based on the application's needs.

7. Safety Considerations:

- When accommodating variations in stroke length and force requirements, it is essential to consider safety factors. Hydraulic cylinders should be selected and designed with an appropriate safety margin to handle unexpected loads or variations in operating conditions. Safety mechanisms such as overload protection valves and pressure relief valves can be incorporated to prevent damage or failure in situations where the force limits are exceeded.

By considering factors such as cylinder size and design, piston and rod configurations, hydraulic pressure and flow, customization options, synchronization, load-sensing, pressure control, and safety considerations, hydraulic cylinders can effectively accommodate variations in stroke length and force requirements. This flexibility allows hydraulic cylinders to be tailored to meet the specific demands of a wide range of applications, ensuring optimal performance and efficiency.

China Best Sales Hot Selling Special Energy-Efficient Replaceable Competible Hydraulic Cylinder with ISO9001   with high quality China Best Sales Hot Selling Special Energy-Efficient Replaceable Competible Hydraulic Cylinder with ISO9001   with high quality
editor by CX 2024-01-17