Product Description

Product Description

Product Application

ETERNAL company design and manufacture hydraulic cylinders for different applications:
1.Construction machinery
2.Mining machinery
3.Hydraulic press, including Forging press, Die casting machine, Injection Molding Machine, etc.
4.Extrusion press
5.Metallurgical machinery, like Rolling Mill Servo
6.Hoisting machinery, including marine jib crane,marine crane,hydraulic knuckle boom marine crane,etc.
7.Excavating machinery, used in telescopic boms, knuckle booms, fixed double taper booms,etc.
8.Petroleum drilling machinery
9.Hydraulic lifting platform
10.Marine equipment
11.Hydro power project

Design

Not only we could manufacture all kinds of heavy duty hydraulic cylinder on hydraulic press according to the drawing from customers,but also we could make a design according to customers’requirements. If you require our engineer to make a design, please advise us thefollowing specification :
1. Rated pressure
2. Working pressure
3. Test pressure
4. Working condition and environment ,for example ,temperature ,working frequency
5. Pulling force ,and return stroke force
6. Pulling and return speed
7. Assembly size
8. Seal ring requirements .For example , brand ,seal material etc .
9. Tube and piston rod raw material requirements
10. Piston rod surface treatment requirements, for example chromating film thickness , Surface hardness etc .
11. Painting and other spare parts requirements .
 

Manufacturing capability and cylinder size range

Max bore diameter: Ø1200mm
Max stroke: 12Meter
Max text pressure: 50MPa
 

Detailed Images

1.Cylinder tube

According to the cylinder pressure and inside diameter size, different steel tube Would be choosed.
ID ≤300mm, choose cold rolled precision seamless tube
300mm≤ID ≤500mm, choose hot rolled seamless tube
500mm≤ID ≤1000mm, choose forged tube
Steel grade : SAE1571, SAE1045, 27SiMn , S355JR, S355J2G3, St52-3, SUS304, SUS316L etc .
Inside boring and honing , roughness R0.2-R0.3
Inside chromating : if necessary ,tube inside chromating could be applied 

2Piston rod

steel grade : SAE1045, 42CrMo4, SUS410 ,SUS420, SUS304, SUS316L

Eternal company ensure that every piece piston rod would be surface hardened before chromating, surface hardness is HRC55~60 , Chromating film thickness is 0.03~0.04mm if there is no other specific requirements.

 

3.Seal ring and O ring
According to the customers’ requirements and working condition, CHINAMFG company would choose suitable
seal ring kit, seal ring brand include: Parker, Merkel, NOK, HangZhou Rubber institute, ZheJiang brand etc. CHINAMFG company would supply suitable seal solution for their customer so that hydraulic cylinder has more lifetime, easy maintenance and simple repairing.

 

4.Tube and flange welding

The welding on cylinder tube and flange would be Ultrasonic tested every time, the welding seam would be
cleaned before machining. CHINAMFG company ensure that every welding seam has no any leak during lifetime.

 

5.Assembly and pressure test

Before hydraulic cylinder is assemblied, every spare parts would be measured and cleaned. After hydraulic cylinder is assemblied, pressure test would be carried out 1 By one, CHINAMFG company ensure that testingpressure is higher 30%-50% than working pressure, and pressure holding time 30~60 minutes is necessary. Every piece hydraulic cylinder must be tested completely without any leak.

 

Packing & Delivery

Our Company

 

Company Profile

HangZhou CHINAMFG Heavy Industry Co., Ltd was established in 22, Apr. 2008. Our products mainly including: hydraulic baler, hydraulic shear, hydraulic cylinder and metallurgical Equipment. We could manufacture all kinds of hydraulic baler and hydraulic shear, pressure up to 1000 tons, and our machines have been exported to many countries.
Our hydraulic cylinders are widely used in construction machinery, mining machinery, hydro power project, offshore drilling platform, steel plant equipment, marine machinery, hydraulic lifting system, metallurgical equipment, forging equipment etc. Max cylinder bore size reach 1,000 mm, max cylinder stroke reach 12 meter, max test pressure could reach 50Mpa. Our cylinder has passed through BV certification.
We could also manufacture all kinds of metal extrusion press, pipe upsetting machine, including all kinds of steel plant spare parts.
Our factory has 15,000 square CHINAMFG and have heavy duty workshop with area 8,000 square meters. There is double layer crane in the work shop. The lifting height could reach 16 meter while lifting capacity could reach 75 tons.
Our company passed the ISO9001: 2015, ISO14001: 2015, OHSAS18001: 2007, BV marine certification, API certification etc. Till now, our products have been exported to nearly 50 countries and own good reputation from our customers. You are welcome to visit our company.

 

Certification: CE
Pressure: Medium Pressure
Work Temperature: Low Temperature
Acting Way: Single Acting
Working Method: Straight Trip
Adjusted Form: Regulated Type
Customization:
Available

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hydraulic cylinder

How do manufacturers ensure the durability and reliability of hydraulic cylinders?

Manufacturers employ various strategies and techniques to ensure the durability and reliability of hydraulic cylinders. These measures are crucial as hydraulic cylinders are often subjected to demanding operating conditions and heavy loads. To ensure their longevity and dependable performance, manufacturers focus on the following aspects:

1. High-Quality Materials:

– Manufacturers use high-quality materials in the construction of hydraulic cylinders. Components such as cylinder barrels, piston rods, seals, and bearings are made from materials that possess excellent strength, corrosion resistance, and wear resistance properties. Common materials used include high-grade steel alloys, chrome-plated rods, and specialized coatings. The selection of appropriate materials ensures that hydraulic cylinders can withstand the stresses, pressures, and environmental conditions they encounter during operation.

2. Robust Design:

– Hydraulic cylinders are designed to withstand high loads and harsh operating conditions. Manufacturers use computer-aided design (CAD) software and finite element analysis (FEA) techniques to optimize the cylinder’s structural integrity and performance. The design includes factors such as proper wall thickness, reinforcement in critical areas, and appropriate sizing of components. Robust design practices ensure that hydraulic cylinders can withstand the forces and stresses they encounter, preventing premature failure and ensuring durability.

3. Quality Manufacturing Processes:

– Manufacturers follow stringent quality control measures during the manufacturing processes of hydraulic cylinders. These processes include precision machining, welding, heat treatment, and surface finishing. Skilled technicians and advanced machinery are employed to ensure dimensional accuracy, proper fitment of components, and overall quality. By adhering to strict manufacturing processes and quality standards, manufacturers can produce hydraulic cylinders with consistent performance and reliability.

4. Sealing Technology:

– The sealing system of hydraulic cylinders is critical for their durability and reliability. Manufacturers utilize advanced sealing technologies such as lip seals, O-rings, and composite seals to prevent fluid leakage and ingress of contaminants. Properly designed and high-quality seals ensure that hydraulic cylinders can maintain their performance over extended periods. Seals are tested for their compatibility with the hydraulic fluid, pressure resistance, and resilience to environmental factors such as temperature and humidity.

5. Performance Testing:

– Manufacturers subject hydraulic cylinders to rigorous performance testing to validate their durability and reliability. These tests simulate real-world operating conditions and evaluate factors such as load capacity, pressure resistance, fatigue life, and leakage. Performance testing helps identify any design flaws or weaknesses in the hydraulic cylinder and allows manufacturers to make necessary improvements. By conducting thorough performance testing, manufacturers can ensure that hydraulic cylinders meet or exceed the required performance standards.

6. Compliance with Industry Standards:

– Manufacturers adhere to industry standards and regulations to ensure the durability and reliability of hydraulic cylinders. These standards, such as ISO 6020/6022 and NFPA T3.6.7, provide guidelines for design, manufacturing, and performance requirements. By following these standards, manufacturers ensure that hydraulic cylinders are designed and built to meet specific quality and safety criteria. Compliance with industry standards helps establish a baseline for durability and reliability and instills confidence in the performance of hydraulic cylinders.

7. Regular Maintenance and Service:

– Manufacturers provide recommendations for regular maintenance and service of hydraulic cylinders. This includes guidelines for lubrication, inspection of components, and replacement of wear parts such as seals and bearings. Following the manufacturer’s maintenance guidelines helps ensure the long-term durability and reliability of hydraulic cylinders. Regular maintenance also allows for the early detection of potential issues, preventing major failures and extending the service life of the hydraulic cylinders.

8. Customer Support and Warranty:

– Manufacturers provide customer support and warranty services to address any issues that arise with hydraulic cylinders. They offer technical assistance, troubleshooting guidance, and replacement of defective components. The warranty ensures that customers receive reliable and durable hydraulic cylinders and provides recourse in case of any manufacturing defects or premature failures. Strong customer support and warranty policies reflect the manufacturer’s commitment to the durability and reliability of their products.

In summary, manufacturers ensure the durability and reliability of hydraulic cylinders through the use of high-quality materials, robust design practices, stringent manufacturing processes, advanced sealing technology, thorough performance testing, compliance with industry standards, regular maintenance guidelines, and customer support with warranty services. By focusing on these aspects, manufacturers can produce hydraulic cylinders that can withstand demanding conditions, provide long service life, and deliver reliable performance in various applications.

hydraulic cylinder

Impact of Hydraulic Cylinders on Overall Productivity of Manufacturing Operations

Hydraulic cylinders play a crucial role in enhancing the overall productivity of manufacturing operations. These versatile devices are widely used in various industrial applications due to their ability to generate powerful and controlled linear motion. Let’s explore how hydraulic cylinders impact the overall productivity of manufacturing operations:

  1. Powerful Force Generation: Hydraulic cylinders are capable of generating high forces, which enables them to handle heavy loads and perform demanding tasks. By providing the necessary force, hydraulic cylinders facilitate efficient and effective operation of machinery and equipment in manufacturing processes. This ability to exert substantial force contributes to increased productivity by enabling the handling of larger workpieces, enhancing process efficiency, and reducing manual labor requirements.
  2. Precision and Control: Hydraulic cylinders offer precise control over the movement of loads, allowing for accurate positioning, alignment, and repetitive tasks. The smooth and controlled linear motion provided by hydraulic cylinders ensures precise operation in manufacturing processes, such as assembly, material handling, and machining. This precision and control minimize errors, rework, and scrap, leading to improved productivity and higher-quality output.
  3. Speed and Efficiency: Hydraulic cylinders can operate at high speeds, enabling rapid movement and cycle times in manufacturing operations. The combination of high force and speed allows for faster operation of machinery and equipment, reducing production cycle times and increasing overall throughput. By optimizing the speed and efficiency of manufacturing processes, hydraulic cylinders contribute to improved productivity and output.
  4. Flexibility and Adaptability: Hydraulic cylinders are highly flexible and adaptable to different manufacturing applications. They can be customized to meet specific requirements, such as load capacity, stroke length, and mounting options. This versatility allows hydraulic cylinders to be integrated into a wide range of machinery and equipment, accommodating diverse manufacturing needs. The ability to adapt to different tasks and environments enhances overall productivity by enabling efficient utilization of resources and facilitating process optimization.
  5. Reliability and Durability: Hydraulic cylinders are known for their robustness and durability, making them suitable for demanding manufacturing environments. Their ability to withstand heavy loads, repeated use, and harsh operating conditions ensures reliable performance over extended periods. Minimizing downtime due to cylinder failure or maintenance requirements contributes to increased productivity and uninterrupted manufacturing operations.

In summary, hydraulic cylinders have a significant impact on the overall productivity of manufacturing operations. Their powerful force generation, precision and control, speed and efficiency, flexibility and adaptability, as well as reliability and durability, contribute to optimized processes, increased throughput, improved quality, and reduced labor requirements. By leveraging the capabilities of hydraulic cylinders, manufacturers can enhance productivity, streamline operations, and achieve greater efficiency in their manufacturing processes.

hydraulic cylinder

What is a hydraulic cylinder and how does it function in various applications?

A hydraulic cylinder is a mechanical actuator that converts hydraulic energy into linear force and motion. It plays a critical role in various applications where controlled and powerful linear motion is required. Hydraulic cylinders are commonly used in industries such as construction, manufacturing, agriculture, and transportation. Here’s a detailed explanation of what a hydraulic cylinder is and how it functions:

Definition and Components:

– A hydraulic cylinder consists of 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.

Function:

– The function of a hydraulic cylinder is to convert the pressure and flow of hydraulic fluid into linear force and motion. The hydraulic fluid, typically oil, is pressurized and directed into one of the chambers of the cylinder. As the fluid enters the chamber, it applies pressure on the piston, causing it to move in a linear direction. This linear motion of the piston is transferred to the piston rod, creating a pushing or pulling force.

Working Principle:

– The working principle of a hydraulic cylinder is based on Pascal’s law, which states that pressure exerted on a fluid in a confined space is transmitted equally in all directions. In a hydraulic cylinder, when hydraulic fluid is pumped into one side of the cylinder, it creates pressure on the piston. The pressure is transmitted through the fluid to the other side of the piston, resulting in a balanced force across the piston and piston rod. This force generates linear motion in the direction determined by the fluid input.

Applications:

– Hydraulic cylinders find extensive use in a wide range of applications due to their ability to generate high forces and precise control of linear motion. Some common applications include:

1. Construction Equipment: Hydraulic cylinders are used in excavators, loaders, bulldozers, and cranes for lifting, pushing, and digging tasks.

2. Manufacturing Machinery: Hydraulic cylinders are employed in presses, machine tools, and material handling equipment for pressing, clamping, and lifting operations.

3. Agricultural Machinery: Hydraulic cylinders are used in tractors, harvesters, and irrigation systems for tasks like steering, lifting, and controlling attachments.

4. Transportation: Hydraulic cylinders are utilized in vehicles such as dump trucks, garbage trucks, and forklifts for tilting, lifting, and tipping operations.

5. Aerospace and Defense: Hydraulic cylinders are employed in aircraft landing gear, missile systems, and hydraulic actuators for control surfaces.

6. Marine and Offshore: Hydraulic cylinders are used in ship steering systems, cranes, and offshore drilling equipment for various lifting and positioning tasks.

In these applications, hydraulic cylinders offer advantages such as high force capability, precise control, compact size, and durability. They provide efficient and reliable linear motion, contributing to enhanced productivity and functionality in a wide range of industries.

Overall, hydraulic cylinders are integral components in various applications where controlled and powerful linear motion is required. Their ability to convert hydraulic energy into mechanical force makes them invaluable in numerous industries, enabling the operation of heavy machinery, precise positioning, and efficient load handling.

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editor by CX 2023-10-16