Product Description
Telescopic
The Telescopic Dump Trailer is designed to handle bulk materials with unprecedented efficiency and flexibility. At its heart lies the telescopic cylinder, a core component that enables the trailer to extend and retract its dumping mechanism, delivering remarkable versatility and maneuverability. Its extended reach and precision control enable operators to dump materials at heights that would be otherwise difficult or impossible to reach. This capability opens up a world of possibilities, from accessing hard-to-reach areas to loading and unloading materials more efficiently, even in confined spaces.
Dual Ram
The Dual Ram Dump Trailer is a revolutionary transportation solution, which heart lies the hydraulic cylinder, a key component that enables the trailer's dual-ram dumping mechanism, delivering superior performance and maneuverability. The Dual Ram Dump Trailer offers a cost-effective solution for material handling operations. Its durability and longevity reduce the need for frequent maintenance or replacements, while its efficiency in loading and unloading materials can significantly cut operational costs.
Scissor Hoist
The Scissor Hoist Dump Trailer is a highly versatile and efficient transportation solution, designed for handling bulk materials in a range of challenging environments. At its core lies the hoist cylinder, a crucial component that enables the scissor-like lifting mechanism and accurate positioning of the trailer's dumping system. The Scissor Hoist Dump Trailer offers numerous advantages over traditional dump trailers. The hoist cylinder allows for efficient loading and unloading of materials, even in confined spaces or on uneven terrain. The scissor hoist dump trailer's compact design and maneuverability make it suitable for a variety of applications, from construction sites to waste disposal facilities.
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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| Warranty: | 2 Years Warranty |
|---|---|
| Seals: | Packer/Hallite/Gapi |
| Surface Treatment: | Hard Chrome, Zinc, Copper |
| Oil Port: | NPT/SAE/BSPP |
| Material: | 20#Steel/45#Steel |
| Operating Temperature: | -40 Degree to +120 Degree |
| Samples: |
US$ 45/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
|
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|---|
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.
Handling Challenges of Different Fluid Viscosities in Hydraulic Cylinders
Hydraulic cylinders are designed to handle the challenges associated with different fluid viscosities. The viscosity of hydraulic fluid can vary based on temperature, type of fluid used, and other factors. Hydraulic systems need to accommodate these variations to ensure optimal performance and efficiency. Let's explore how hydraulic cylinders handle the challenges of different fluid viscosities:
- Fluid Selection: Hydraulic cylinders are designed to work with a range of hydraulic fluids, each with its specific viscosity characteristics. The selection of an appropriate fluid with the desired viscosity is crucial to ensure optimal performance. Manufacturers provide guidelines regarding the recommended viscosity range for specific hydraulic systems and cylinders. By choosing the right fluid, hydraulic cylinders can effectively handle the challenges posed by different fluid viscosities.
- Viscosity Compensation: Hydraulic systems often incorporate features to compensate for variations in fluid viscosity. For example, some hydraulic systems utilize pressure compensating valves that adjust the flow rate based on the viscosity of the fluid. This compensation ensures consistent performance across different operating conditions and fluid viscosities. Hydraulic cylinders work in conjunction with these compensation mechanisms to maintain precision and control, regardless of the fluid viscosity.
- Temperature Control: Fluid viscosity is highly dependent on temperature. Hydraulic cylinders employ various temperature control mechanisms to address the challenges posed by temperature-induced viscosity changes. Heat exchangers, coolers, and thermostatic valves are commonly used to regulate the temperature of the hydraulic fluid within the system. By controlling the fluid temperature, hydraulic cylinders can maintain the desired viscosity range, ensuring reliable and efficient operation.
- Efficient Filtration: Contaminants in hydraulic fluid can affect its viscosity and overall performance. Hydraulic systems incorporate efficient filtration systems to remove particles and impurities from the fluid. Clean fluid with the appropriate viscosity ensures optimal functioning of hydraulic cylinders. Regular maintenance and filter replacements are essential to uphold the desired fluid viscosity and prevent issues related to fluid contamination.
- Proper Lubrication: Different fluid viscosities can impact the lubrication properties within hydraulic cylinders. Lubrication is essential for minimizing friction and wear between moving parts. Hydraulic systems employ lubricants specifically formulated for the anticipated fluid viscosity range. Adequate lubrication ensures smooth operation and extends the lifespan of hydraulic cylinders, even in the presence of varying fluid viscosities.
In summary, hydraulic cylinders employ various strategies to handle the challenges associated with different fluid viscosities. By selecting appropriate fluids, incorporating viscosity compensation mechanisms, controlling temperature, implementing efficient filtration, and ensuring proper lubrication, hydraulic cylinders can accommodate variations in fluid viscosity. These measures enable hydraulic systems to deliver consistent performance, precise control, and efficient operation across different fluid viscosity ranges.
What benefits do hydraulic cylinders offer for tasks requiring heavy lifting or movement?
Hydraulic cylinders offer numerous benefits for tasks that involve heavy lifting or movement. Their unique design and characteristics make them well-suited for applications that require substantial force, precise control, and reliable operation. Here are the detailed benefits that hydraulic cylinders provide for such tasks:
1. High Force Generation:
- Hydraulic cylinders are capable of generating significant amounts of force. By utilizing hydraulic pressure, which can be easily amplified, hydraulic cylinders can exert substantial force to lift and move heavy loads. The force output of a hydraulic cylinder is directly proportional to the hydraulic pressure and the surface area of the piston. This high force capability makes hydraulic cylinders ideal for tasks that involve heavy lifting, pushing, or pulling.
2. Precise Control:
- Hydraulic cylinders offer precise control over the force and motion they generate. By regulating the flow of hydraulic fluid into the cylinder, the speed, direction, and position of the cylinder's movement can be accurately controlled. This level of control is crucial for tasks that require precise positioning, delicate movements, or synchronization of multiple cylinders. It enables operators to perform operations with accuracy and minimize the risk of damage or accidents.
3. Safety:
- Hydraulic cylinders are designed with safety features to ensure the protection of both personnel and equipment. They incorporate overload protection mechanisms, such as relief valves, that prevent excessive force or pressure from damaging the system. Additionally, hydraulic cylinders allow for controlled and gradual movements, reducing the risk of sudden and uncontrolled motions that could pose safety hazards during heavy lifting or movement tasks.
4. Versatility and Adaptability:
- Hydraulic cylinders are versatile components that can be adapted to meet specific requirements. They can be customized based on factors such as force capacity, stroke length, speed, and mounting options, allowing them to be integrated into various types of machinery. This versatility makes hydraulic cylinders suitable for a wide range of applications, including construction, material handling, mining, agriculture, and more.
5. Smooth and Controlled Operation:
- Hydraulic cylinders provide smooth and controlled operation, ensuring efficient and reliable performance during heavy lifting or movement tasks. The hydraulic fluid acts as a cushioning medium, which helps dampen shocks and vibrations, resulting in smoother and quieter operation. This controlled operation also reduces the risk of damage to the load being lifted or the surrounding equipment.
6. Compact Design:
- Hydraulic cylinders offer a high power-to-size ratio, allowing for compact machinery design. Their relatively small size, compared to the forces they can generate, makes them suitable for applications where space is limited or weight restrictions apply. This compact design enables the integration of hydraulic cylinders into different types of equipment without compromising performance or efficiency.
7. Durability and Reliability:
- Hydraulic cylinders are built to withstand rigorous operating conditions and provide long-term reliability. They are constructed with robust materials, precise machining, and effective sealing systems to ensure durability and prevent fluid leakage. Hydraulic cylinders can withstand high pressures, heavy loads, and continuous use, making them suitable for demanding tasks involving heavy lifting or movement.
8. Energy Efficiency:
- Hydraulic cylinders contribute to energy efficiency in tasks requiring heavy lifting or movement. Hydraulic systems allow for the transfer of power over long distances without significant power losses. Additionally, hydraulic cylinders can incorporate energy-saving features such as load-sensing technology and regenerative circuits, which reduce energy consumption by optimizing the use of hydraulic fluid.
In summary, hydraulic cylinders offer several benefits for tasks that involve heavy lifting or movement. They provide high force generation, precise control, safety features, versatility, smooth operation, compact design, durability, and energy efficiency. These advantages make hydraulic cylinders indispensable components in various industries where heavy loads need to be lifted, pushed, or moved with accuracy and reliability.
editor by CX 2024-01-18