Product Description
Company Profile
Wantong is a professional hydraulic cylinder manufacturer in China, specialized in the design, R&D and manufacture of hydraulic machinery.We have developed unique and advanced equipment by ourselves to insure first-class quality! All production steps are finished in the same factory, and this guarantees good quality and short lead time. Our main products are hydraulic cylinders for dump trucks, coal mining machinery, tippers, engineering machinery .We have a professional research and development team and cooperate with many universities. Advanced equipment, excellent talents and strict management help us develop first-class products.We have CHINAMFG and advanced production equipments including cold drawing line, heat treatment line, surface treatment line, testing machines and various CNC machines.
Product Description
Product advantage
1.The North American advanced processing technology is adopted to ensure the stable performance.
2.High quality alloy seamless steel pipe are adopted to keep big lifting capacity and light weight;
3.The application of imperial size makes it easy to replace the seals and other accessories;
4.Superior chrome-plating technology improves the corrosion resistance and hardness of cylinders;
5.The world famous brands of seals such as HALLITE, CHINAMFG and NOK ensure the sealing performance;
Model | The first stage rod diameter | Stroke | Closed length | Open length |
WTPK 3TG F5*72 | 5" | 1829mm | 945mm | 2773mm |
WTPK 3TG F5*84 | 5" | 2134mm | 1046mm | 3180mm |
WTPK 3TG F5*107 | 5" | 2732mm | 1229mm | 3961mm |
WTPK 3TG F5*126 | 5" | 3216mm | 1386mm | 4602mm |
WTPK 3TG F6*86 | 6" | 3216mm | 1038mm | 3241mm |
WTPK 3TG F6*104 | 6" | 2640mm | 1194mm | 3834mm |
WTPK 3TG F6*107 | 6" | 2732mm | 1289mm | 3961mm |
WTPK 3TG F6*111 | 6" | 2819mm | 1268mm | 4087mm |
WTPK 3TG F6*120 | 6" | 3048mm | 1359mm | 4407mm |
WTPK 3TG F6*126 | 6" | 3208mm | 1386mm | 4594mm |
WTPK 3TG F6*140 | 6" | 3562mm | 1519mm | 5081mm |
WTPK 4TG F6*135 | 6" | 3429mm | 1199mm | 4628mm |
WTPK 4TG F6*156 | 6" | 3962mm | 1362mm | 5324mm |
WTPK 3TG F7*110 | 7" | 2810mm | 1271mm | 4081mm |
WTPK 3TG F7*120 | 7" | 3048mm | 1349mm | 4397mm |
WTPK 3TG F7*124 | 7" | 3172mm | 1392mm | 4564mm |
WTPK 3TG F7*129 | 7" | 3277mm | 1435mm | 4712mm |
WTPK 3TG F7*140 | 7" | 3567mm | 1524mm | 5091mm |
WTPK 3TG F7*150 | 7" | 3810mm | 1613mm | 5423mm |
WTPK 4TG F7*120 | 7" | 3048mm | 1349mm | 4168mm |
WTPK 4TG F7*135 | 7" | 3429mm | 1230mm | 4659mm |
WTPK 4TG F7*140 | 7" | 3556mm | 1263mm | 4819mm |
WTPK 4TG F7*156 | 7" | 3962mm | 1365mm | 5327mm |
WTPK 4TG F7*161 | 7" | 4108mm | 1405mm | 5513mm |
WTPK 4TG F7*167 | 7" | 4242mm | 1432mm | 5674mm |
WTPK 4TG F7*180 | 7" | 4572mm | 1552mm | 6124mm |
WTPK 4TG F8*148 | 8" | 3753mm | 1308mm | 5061mm |
WTPK 4TG F8*156 | 8" | 3962mm | 1365mm | 5327mm |
WTPK 4TG F8*161 | 8" | 4064mm | 1416mm | 5480mm |
WTPK 4TG F8*170 | 8" | 4318mm | 1454mm | 5481mm |
WTPK 4TG F8*180 | 8" | 4572mm | 1518mm | 6090mm |
WTPK 5TG F8*170 | 8" | 4318mm | 1267mm | 5585mm |
WTPK 5TG F8*190 | 8" | 4800mm | 1387mm | 6188mm |
WTPK 5TG F8*220 | 8" | 5588mm | 1524mm | 7122mm |
WTPK 5TG F8*235 | 8" | 5944mm | 1641mm | 7585mm |
WTPK 5TG F8*250 | 8" | 6325mm | 1743mm | 8068mm |
WTPK 5TG F9*265 | 9" | 6731mm | 1844mm | 8575mm |
WTPK 5TG F9*280 | 9" | 7112mm | 1997mm | 9109mm |
WTPK 5TG F9*300 | 9" | 7620mm | 2007mm | 9627mm |
WTPK 5TG F9*320 | 9" | 8129mm | 2108mm | 9628mm |
WTPK 5TG F9*340 | 9" | 8636mm | 2210mm | 10846mm |
Specification
Item | Value |
Product Name | PK Type Hydraulic Cylinder |
Outer Tube Diameter | 178mm |
Inner Tube Diameter | 168mm |
Rod Diameter | 148mm |
Maximum Stroke | 3429mm |
Weight | 150kg |
Warranty | 14 Months From Production Time |
Working Pressure | 2000 psi |
Place of Origin | ZheJiang ,China |
Color | Client's Request |
Production Equipment
The company has more than 1000 sets of machinery processing,automatic precision processing, cold drawing, electroplating, heat treatment, automatic painting system, automatic assembly control system, automatic welding and other equipment. With the processing of cylinder diameter 630mm, length of 6 CHINAMFG within the cylinder of the whole process processing capacity.
Quality Control
>All specification is designed by professional engineer.
>All material is high quality-Seal kits were purchased from USA, Japan, UK and Sweden.
>All material is processed by skilled workers and advanced CNC lathe.
>All cylinders are 100% tested before package to ensure every cylinder is qualified for its purpose.
>Package is air cushion film for each cylinder and steel case for all cylinders to ensure goods can arrive at customer safely.
>14 months' warranty and long time track service is offered to solve any problems you meet after sale.
Quality Inspection
Our company has abundant technical force and perfect testing means. By making wide technical and business cooperation with many related enterprises, universities, colleges and institutes both at home and abroad, and employing senior engineers and software engineers, we have greatly strengthened and improved our designing, processing, and testing abilities. Every piece of hydraulic cylinder are tested and will send out only after they are pasted the each test.
1). Trial Operation Test
2). Start-up Pressure Test
3). Pressure-Tight Test
4). Leak Test
5). Full Stroke Test
6). Buffer Test
7). Testing the Effect of Limit
8). Load Efficiency Test
9). Reliability Test
Packing & Delivery
To better ensure the safety of your goods, professional, environmentally friendly, convenient and efficient packaging services will be provided.
Our Service
1).Pre-sale service: Keep communicating with the truck manufacturers, including selection of product model, design of hydraulic system, test of performance and analysis of the accident. Once the problems occur, we will solve them immediately together with truck manufacturers.
2).The sale service: Provide training and technical support for users.
3).After-sale service: Solve the problem firstly, then analyse responsibility ; Replace the system components immediately if any need.
4). 24 hours telephone service hotline.
Our Honor
Our Customer
Domestic Marketing Locations
The company's products are widely sold in ZheJiang , ZheJiang , ZheJiang , ZheJiang , ZheJiang , ZheJiang , ZheJiang , ZheJiang , ZheJiang and other more than 20 provinces, municipalities and autonomous regions.
Foreign Marketing Locations
Our products are exported to the United States, Canada, Mexico, Russia, South Africa, Indonesia and other Europe, America, South America, Southeast Asia.
FAQ
Q1. What are the same aspects of your cylinder with CHINAMFG cylinder?
A: Same inside structure.
Same outside dimension and same mounting sizes. It can be interchangeable with Hyva's
Q2. Compared with CHINAMFG cylinder, what are your cylinder advantages?
A: 1. Rod are chrome plated.
2. Tubes are quenched and tempered.
3. Tube inner hole goes through deep hole boring machine processing. Surface roughness is 0.4Ra and circular degree is 0.571.
4. Good quality yet lower price.
Q3: Are you a manufacture or a trade company?
A: Manufacture, we are the leader manufacturer of hydraulic industry in China with over 20 years' experience and technology accumulation. With strong technical team we could solve any annoyance of you.
Q4: Do you have quality control system?
A: Yes, The quality management system introduced is: ISO/TS 16949:2009-certified by NQA and IATF cert.
Q5: How can I get a booklet and buy a cylinder from you?
A: Very easy! Just leave me a message or email or call me directly, let me know you are interesting in our products. I will talk with you for the details soon!
Q6: Can you tell me the price for the cylinder?
A: 1. Please advice the drawing with technical requirement.
2. Please advice the model No. after you check our booklet.
3. Please advice the tipping capacity, number of stages, closed length, mounting type and size.
4. Please also help advice the quantities, this is very important.
Q7: Do your products come with a warranty?
A: Yes, we have 14 months from production time. In this time, if the quality problem we will free repair for you.
Q8: Hydraulic cylinder internal leakage?
A: 3 main reasons causing internal leakage: overload, polishing bad controlled, cheap seal kits. As is known to all, vehicles in China are often overloaded, our products all designed to bear the overload power. Advanced equipment could assure the polish processing. And we use the imported/TOP brand seals to meet customers' requirement.
Q9: What about the quality feedback of your products?
A: WE HAVE NEVER RECEIVED EVEN ONCE QUALITY COMPLAINT FOR MANY YEARS OF INTERNATIONAL BUSINESS.
Q10: Can you help me to install or recommend what kind of hydraulic cylinder or power pack should I use for specific machine?
A: Yes, we have 25 experienced engineers who are always ready to help you. If you do not know what kind of hydraulic cylinders should be used in your machine, please just contact us, our engineers will design the exact products match your need.
Q11: What is your main payment term?
A: T/T, L/C, Western Union, Paypal. Either is available.
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What advancements in hydraulic cylinder technology have improved sealing and reliability?
Advancements in hydraulic cylinder technology have continuously contributed to improving sealing and reliability in hydraulic systems. These advancements aim to address common challenges such as leakage, wear, and failure of seals, ensuring optimal performance and longevity. Here are several key advancements that have significantly improved sealing and reliability in hydraulic cylinders:
1. High-Performance Sealing Materials:
- The development of advanced sealing materials has greatly improved the sealing capabilities of hydraulic cylinders. Traditional sealing materials like rubber have been replaced or enhanced with high-performance materials such as polyurethane, PTFE (polytetrafluoroethylene), and various composite materials. These materials offer superior resistance to wear, temperature, and chemical degradation, resulting in improved sealing performance and extended seal life.
2. Enhanced Seal Designs:
- Advancements in seal designs have focused on improving sealing efficiency and reliability. Innovative seal profiles, such as lip seals, wipers, and scrapers, have been developed to optimize fluid retention and prevent contamination. These designs provide better sealing performance, minimizing the risk of fluid leakage and maintaining system integrity. Additionally, improved seal geometries and manufacturing techniques ensure tighter tolerances, reducing the potential for seal failure due to misalignment or extrusion.
3. Integrated Seal and Bearing Systems:
- Hydraulic cylinders now incorporate integrated seal and bearing systems, where the sealing elements also serve as bearing surfaces. This design approach reduces the number of components and potential failure points, improving overall reliability. By integrating seals and bearings, the risk of seal damage or displacement due to excessive loads or misalignment is minimized, resulting in enhanced sealing performance and increased reliability.
4. Advanced Coatings and Surface Treatments:
- The application of advanced coatings and surface treatments to hydraulic cylinder components has significantly improved sealing and reliability. Coatings such as chrome plating or ceramic coatings enhance surface hardness, wear resistance, and corrosion resistance. These surface treatments provide a smoother and more durable surface for seals to operate against, reducing friction and improving sealing performance. Moreover, specialized coatings can also provide self-lubricating properties, reducing the need for additional lubrication and enhancing reliability.
5. Sealing System Monitoring and Diagnostic Technologies:
- The integration of monitoring and diagnostic technologies in hydraulic systems has revolutionized seal performance and reliability. Sensors and monitoring systems can detect and alert operators to potential seal failures or leaks before they escalate. Real-time monitoring of pressure, temperature, and seal performance parameters allows for proactive maintenance and early intervention, preventing costly downtime and ensuring optimal sealing and reliability.
6. Computational Modeling and Simulation:
- Computational modeling and simulation techniques have played a significant role in advancing hydraulic cylinder sealing and reliability. These tools enable engineers to analyze and optimize seal designs, fluid flow dynamics, and contact stresses. By simulating various operating conditions, potential issues such as seal extrusion, wear, or leakage can be identified and mitigated early in the design phase, resulting in improved sealing performance and enhanced reliability.
7. Systematic Maintenance Practices:
- Advances in hydraulic cylinder technology have also emphasized the importance of systematic maintenance practices to ensure sealing and overall system reliability. Regular inspection, lubrication, and replacement of seals, as well as routine system flushing and filtration, help prevent premature seal failure and optimize sealing performance. Implementing preventive maintenance schedules and adhering to recommended service intervals contribute to extended seal life and enhanced reliability.
In summary, advancements in hydraulic cylinder technology have led to significant improvements in sealing and reliability. High-performance sealing materials, enhanced seal designs, integrated seal and bearing systems, advanced coatings and surface treatments, sealing system monitoring and diagnostics, computational modeling and simulation, and systematic maintenance practices have all played key roles in achieving optimal sealing performance and increased reliability. These advancements have resulted in more efficient and dependable hydraulic systems, minimizing leakage, wear, and failure of seals, and ultimately improving the overall performance and longevity of hydraulic cylinders in diverse applications.
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.
How do hydraulic cylinders generate force and motion using hydraulic fluid?
Hydraulic cylinders generate force and motion by utilizing the principles of fluid mechanics, specifically Pascal's law, in conjunction with the properties of hydraulic fluid. The process involves the conversion of hydraulic energy into mechanical force and linear motion. Here's a detailed explanation of how hydraulic cylinders achieve this:
1. Pascal's Law:
- Hydraulic cylinders operate based on Pascal's law, which states that when pressure is applied to a fluid in a confined space, it is transmitted equally in all directions. In the context of hydraulic cylinders, this means that when hydraulic fluid is pressurized, the force is evenly distributed throughout the fluid and transmitted to all surfaces in contact with the fluid.
2. Hydraulic Fluid and Pressure:
- Hydraulic systems use a specialized fluid, typically hydraulic oil, as the working medium. This fluid is stored in a reservoir and circulated through the system by a hydraulic pump. The pump pressurizes the fluid, creating hydraulic pressure that can be controlled and directed to various components, including hydraulic cylinders.
3. Cylinder Design and Components:
- Hydraulic cylinders consist of several key components, including a cylindrical barrel, a piston, a piston rod, and various seals. The barrel is a hollow tube that houses the piston and allows for fluid flow. The piston divides the cylinder into two chambers: the rod side and the cap side. The piston rod extends from the piston and provides a connection point for external loads. Seals are used to prevent fluid leakage and maintain hydraulic pressure within the cylinder.
4. Fluid Input and Motion:
- To generate force and motion, hydraulic fluid is directed into one side of the cylinder, creating pressure on the corresponding surface of the piston. This pressure is transmitted through the fluid to the other side of the piston.
5. Force Generation:
- The force generated by a hydraulic cylinder is a result of the pressure applied to a specific surface area of the piston. The force exerted by the hydraulic cylinder can be calculated using the formula: Force = Pressure × Area. The area is determined by the diameter of the piston or the piston rod, depending on which side of the cylinder the fluid is acting upon.
6. Linear Motion:
- As the pressurized hydraulic fluid acts on the piston, it generates a force that moves the piston in a linear direction within the cylinder. This linear motion is transferred to the piston rod, which extends or retracts accordingly. The piston rod can be connected to external components or machinery, allowing the generated force to perform various tasks, such as lifting, pushing, pulling, or controlling mechanisms.
7. Control and Regulation:
- The force and motion generated by hydraulic cylinders can be controlled and regulated by adjusting the flow of hydraulic fluid into the cylinder. By regulating the flow rate, pressure, and direction of the fluid, the speed, force, and direction of the cylinder's movement can be precisely controlled. This control allows for accurate positioning, smooth operation, and synchronization of multiple cylinders in complex machinery.
8. Return and Recirculation of Fluid:
- After the hydraulic cylinder completes its stroke, the hydraulic fluid on the opposite side of the piston needs to be returned to the reservoir. This is typically achieved through hydraulic valves that control the flow direction, allowing the fluid to return and be recirculated in the system for further use.
In summary, hydraulic cylinders generate force and motion by utilizing the principles of Pascal's law. Pressurized hydraulic fluid acts on the piston, creating force that moves the piston in a linear direction. This linear motion is transferred to the piston rod, allowing the generated force to perform various tasks. By controlling the flow of hydraulic fluid, the force and motion of hydraulic cylinders can be precisely regulated, contributing to their versatility and wide range of applications in machinery.
editor by Dream 2024-11-06