China factory Custom Made Durable Lifting Replaceable Basic Hydraulic Cylinder with Patent vacuum pump oil near me

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
Structure: Piston Type
Oil Port: NPT/SAE/BSPP
Material: 20#Steel/45#Steel
Seals: Parker/Hallite/Gapi
Samples:
US$ 99/Piece
1 Piece(Min.Order)

|

Customization:
Available

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hydraulic cylinder

Can hydraulic cylinders be integrated with advanced control systems and automation?

Yes, hydraulic cylinders can be integrated with advanced control systems and automation technologies to enhance their functionality, precision, and overall performance. The integration of hydraulic cylinders with advanced control systems allows for more sophisticated and precise control over their operation, enabling automation and intelligent control. Here’s a detailed explanation of how hydraulic cylinders can be integrated with advanced control systems and automation:

1. Electronic Control:

– Hydraulic cylinders can be equipped with electronic sensors and transducers to provide real-time feedback on their position, force, pressure, or velocity. These sensors can be integrated with advanced control systems, such as programmable logic controllers (PLCs) or distributed control systems (DCS), to monitor and control the operation of hydraulic cylinders. By integrating electronic control, the position, speed, and force of hydraulic cylinders can be precisely monitored and adjusted, allowing for more accurate and automated control.

2. Closed-Loop Control:

– Closed-loop control systems use feedback from sensors to continuously monitor and adjust the operation of hydraulic cylinders. By integrating hydraulic cylinders with closed-loop control systems, precise control over position, velocity, and force can be achieved. Closed-loop control enables the system to automatically compensate for variations, external disturbances, or changes in operating conditions, ensuring accurate and consistent performance. This integration is particularly beneficial in applications that require precise positioning, synchronization, or force control.

3. Proportional and Servo Control:

– Hydraulic cylinders can be integrated with proportional and servo control systems to achieve finer control over their operation. Proportional control systems use proportional valves to regulate the flow and pressure of hydraulic fluid, allowing for precise adjustment of cylinder speed and force. Servo control systems, on the other hand, combine feedback sensors, high-performance valves, and advanced control algorithms to achieve extremely precise control over hydraulic cylinders. Proportional and servo control integration enhances the responsiveness, accuracy, and dynamic performance of hydraulic cylinders.

4. Human-Machine Interface (HMI):

– Hydraulic cylinders integrated with advanced control systems can be operated and monitored through human-machine interface (HMI) devices. HMIs provide a graphical user interface that allows operators to interact with the control system, monitor cylinder performance, and adjust parameters. HMIs enable operators to set desired positions, forces, or velocities, and visualize the real-time feedback from sensors. This integration simplifies the operation and monitoring of hydraulic cylinders, making them more user-friendly and facilitating seamless integration into automated systems.

5. Communication and Networking:

– Hydraulic cylinders can be integrated into communication and networking systems, enabling them to be part of a larger automated system. Integration with industrial communication protocols, such as Ethernet/IP, Profibus, or Modbus, allows for seamless information exchange between the hydraulic cylinders and other system components. This integration enables centralized control, data logging, remote monitoring, and coordination with other automated processes. Communication and networking integration enhance the overall efficiency, coordination, and integration of hydraulic cylinders within complex automation systems.

6. Automation and Sequential Control:

– By integrating hydraulic cylinders with advanced control systems, they can be seamlessly incorporated into automated processes and sequential control operations. The control system can execute predefined sequences or programmed logic to control the operation of hydraulic cylinders based on specific conditions, inputs, or timing. This integration enables the automation of complex tasks, such as material handling, assembly operations, or repetitive motions. Hydraulic cylinders can be synchronized with other actuators, sensors, or devices, allowing for coordinated and automated operation in various industrial applications.

7. Predictive Maintenance and Condition Monitoring:

– Advanced control systems can also enable predictive maintenance and condition monitoring for hydraulic cylinders. By integrating sensors and monitoring capabilities, the control system can continuously monitor the performance, health, and condition of hydraulic cylinders. This integration allows for the detection of abnormalities, wear, or potential failures in real-time. Predictive maintenance strategies can be implemented based on the collected data, optimizing maintenance schedules, reducing downtime, and enhancing the overall reliability of hydraulic systems.

In summary, hydraulic cylinders can be integrated with advanced control systems and automation technologies to enhance their functionality, precision, and performance. The integration allows for electronic control, closed-loop control, proportional and servo control, human-machine interface (HMI) interaction, communication and networking, automation and sequential control, as well as predictive maintenance and condition monitoring. These integrations enable more precise control, automation, improved efficiency, and optimized performance of hydraulic cylinders in various industrial applications.

hydraulic cylinder

Customization of Hydraulic Cylinders for Marine and Offshore Applications

Yes, hydraulic cylinders can be customized for use in marine and offshore applications. These environments present unique challenges, such as exposure to corrosive saltwater, high humidity, and extreme operating conditions. Customization allows hydraulic cylinders to meet the specific requirements and withstand the harsh conditions encountered in marine and offshore settings. Let’s delve into the details of how hydraulic cylinders can be customized for marine and offshore applications:

  1. Corrosion Resistance: Marine and offshore environments expose hydraulic cylinders to corrosive elements, such as saltwater. To mitigate corrosion, hydraulic cylinders can be customized with materials and surface treatments that provide enhanced corrosion resistance. For example, cylinders can be constructed from stainless steel or coated with protective layers like chrome plating or specialized coatings to withstand the corrosive effects of saltwater.
  2. Sealing and Environmental Protection: Hydraulic cylinders for marine and offshore applications require robust sealing systems to prevent water ingress and protect internal components. Customized sealing solutions, such as high-quality seals, wipers, and gaskets, can be employed to ensure effective sealing and resistance to water, debris, and contaminants. Additionally, hydraulic cylinders can be designed with protective features like bellows or boots to shield vulnerable areas from environmental elements.
  3. High-Pressure and Shock Resistance: Marine and offshore operations may involve high-pressure hydraulic systems and encounters with dynamic loads or shocks. Customized hydraulic cylinders can be engineered to withstand these demanding conditions. They can be designed with reinforced construction, thicker walls, and specialized components to handle high-pressure applications and absorb shock loads, ensuring reliable performance and durability.
  4. Temperature and Fluid Compatibility: Marine and offshore applications can expose hydraulic cylinders to extreme temperature variations and specific fluid requirements. Customization allows the selection of materials, seals, and fluids compatible with the anticipated temperature range and the specific fluid being used. Hydraulic cylinders can be tailored to maintain optimal performance and reliability under challenging temperature conditions and with the designated fluid type.
  5. Mounting and Integration: Customized hydraulic cylinders can be designed to facilitate easy integration and mounting within marine and offshore machinery. Mounting options can be tailored to suit the available space and structural requirements of the equipment. Additionally, customized hydraulic cylinder designs can incorporate features for easy maintenance, accessibility, and connection to the hydraulic system, ensuring convenient installation and serviceability in marine and offshore applications.

In summary, hydraulic cylinders can be customized to meet the unique demands of marine and offshore applications. Customization enables the integration of corrosion-resistant materials, robust sealing systems, high-pressure and shock-resistant designs, temperature and fluid compatibility, as well as optimized mounting and integration features. By tailoring hydraulic cylinders to the specific requirements of marine and offshore environments, reliable performance, extended service life, and efficient operation can be achieved in these challenging operating conditions.

hydraulic cylinder

What are the common signs of wear or leakage that indicate hydraulic cylinder issues?

Hydraulic cylinders are critical components in hydraulic systems, and wear or leakage can lead to performance issues and potential system failures. It is important to be aware of the common signs that indicate hydraulic cylinder problems. Here’s a detailed explanation of the common signs of wear or leakage that indicate hydraulic cylinder issues:

1. Fluid Leakage:

– Fluid leakage is one of the most obvious signs of hydraulic cylinder problems. If you notice hydraulic fluid leaking from the cylinder, it indicates a seal failure or damage to the cylinder. Leaking fluid may be visible around the rod, piston, or cylinder body. It is important to address fluid leakage promptly as it can lead to a loss of system efficiency, contamination of the surrounding environment, and potential damage to other system components.

2. Reduced Performance:

– Wear or internal damage to the hydraulic cylinder can result in reduced performance. You may notice a decrease in the cylinder’s force output, slower operation, or difficulty in extending or retracting the cylinder. Reduced performance can be indicative of worn seals, damaged piston or rod, internal leakage, or contamination within the cylinder. Any noticeable decrease in the cylinder’s performance should be inspected and addressed to prevent further damage or system inefficiencies.

3. Abnormal Noise or Vibrations:

– Unusual noise or vibrations during the operation of a hydraulic cylinder can indicate internal wear or damage. Excessive noise, knocking sounds, or vibrations that are not typical for the system may suggest problems such as worn bearings, misalignment, or loose internal components. These signs should be investigated to identify the source of the issue and take appropriate corrective measures.

4. Excessive Heat:

– Overheating of the hydraulic cylinder is another sign of potential issues. If the cylinder feels excessively hot to the touch during normal operation, it may indicate problems such as internal leakage, fluid contamination, or inadequate lubrication. Excessive heat can lead to accelerated wear, reduced efficiency, and overall system malfunctions. Monitoring the temperature of the hydraulic cylinder is important to detect and address potential problems.

5. External Damage:

– Physical damage to the hydraulic cylinder, such as dents, scratches, or bent rods, can contribute to wear and leakage issues. External damage can compromise the integrity of the cylinder, leading to fluid leakage, misalignment, or inefficient operation. Regular inspection of the cylinder’s external condition is essential to identify any visible signs of damage and take appropriate actions.

6. Seal Failure:

– Hydraulic cylinder seals are critical components that prevent fluid leakage and maintain system integrity. Signs of seal failure include fluid leakage, reduced performance, and increased friction during cylinder operation. Damaged or worn seals should be replaced promptly to prevent further deterioration of the cylinder’s performance and potential damage to other system components.

7. Contamination:

– Contamination within the hydraulic cylinder can cause wear, damage to seals, and overall system inefficiencies. Signs of contamination include the presence of foreign particles, debris, or sludge in the hydraulic fluid or visible damage to seals and other internal components. Regular fluid analysis and maintenance practices should be implemented to prevent contamination and address any signs of contamination promptly.

8. Irregular Seal Wear:

– Hydraulic cylinder seals can wear over time due to friction, pressure, and operating conditions. Irregular seal wear patterns, such as uneven wear or excessive wear in specific areas, may indicate misalignment or improper installation. Monitoring the condition of the seals during regular maintenance can help identify potential issues and prevent premature seal failure.

It is important to address these common signs of wear or leakage promptly to prevent further damage, ensure the optimal performance of hydraulic cylinders, and maintain the overall efficiency and reliability of the hydraulic system. Regular inspection, maintenance, and timely repairs or replacements of damaged components are key to mitigating hydraulic cylinder issues and maximizing system longevity.
China factory Custom Made Durable Lifting Replaceable Basic Hydraulic Cylinder with Patent   vacuum pump oil near me		China factory Custom Made Durable Lifting Replaceable Basic Hydraulic Cylinder with Patent   vacuum pump oil near me
editor by CX 2024-01-15