Product Description

1.Main Description

 

ETERNAL company design and manufacture heavy duty hydraulic cylinders  that covering

the following fields:

 

Ø hydraulic press cylinder

Ø construction machinery cylinder

Ø mining machinery cylinder

Ø metallurgy machinery cylinder

Ø water power project cylinder

Ø marine hydraulic cylinder

Ø servo hydraulic cylinder

 

 

2. Design 

 

Not only we could manufacture all kinds of hydraulic cylinders according to the drawing from our

customers,but also we could make a design according to customer’s requirements.If you 

require our engineer to make a design,pls advise us the following 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 .

 

 

3. Manufacturing capability and cylinder size range 

 

3.1 Cylinder bore diameter :max Ø1200mm 

3.2  Cylinder length :10Meter 

3.3  Max lifting capability :50 Tons 

 

 

4.Manufacturing and inspection 

 

4.1.Cylinder tube size and choice  

 

4.1.1   According to the cylinder pressure and inside diameter size ,different steel tube Would be choosed .

 

1.  ID ≤300mm , cold rolled precision seamless tube would be choosed 

2.  300mm≤ID ≤500mm , hot rolled seamless tube would be choosed 

3.  500mm≤ID ≤1000mm, forged tube would be choosed 

 

4.1.2 Cylinder tube steel grade : SAE1571 , SAE1045 ,27SiMn , S355JR ,S355J2G3

St52-3 ,SUS304 ,SUS316L etc .  

4.1.3 Cylinder tube inside boring and honing , roughness R0.2-R0.3,

 

4.1.4 Cylinder tube inside chromating : if necessary ,tube inside chromating could be applied 

.

4.2  Piston rod  is a very important part for hydraulic cylinder .

 

4.2.1 Piston rod steel grade : SAE1045, 42CrMo4, SUS410 ,SUS420, SUS304, SUS316L 

 

4.2.2 Piston rod chromating and surface hardness .

        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 .

 

4.3 Seal ring and O ring 

 

According to the customers’ requirements and working condition , eternal company would choose suitable 

seal ring kit , seal ring brand include :Parker , Merkel , NOK , HangZhou Rubber institute , ZheJiang  brand etc . Eternal company would supply suitable seal solution for their customer so that hydraulic cylinder has more

 lifetime , easy maintenance and simple repairing .

 

4.4 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 .Eternal company ensure that every welding seam has no any leak during lifetime 

 

4.5 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 one By one , eternal company ensure that testing

 pressure 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 .

 

 4.6 Painting and storage .

 

After hydraulic cylinder pass through pressure test , painting is necessary .

  

 

Processing

 

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.

We specialize on design and manufacture heavy duty hydraulic cylinders , scrap baler machine and shearing machine .Our hydraulic cylinders are widely used in different industry fields including:construction machinery,mining machinery, hydro~power project, offshore drilling platform, steel plant equipment , marine machinery,hydraulic lifting system etc. We have gained 10 patents for our hydraulic cylinders.

In 2008, our servo cylinders with cylinder bore 950mm for steel mill were exported to Poland.In 2009, our hydraulic cylinders with stroke 10 CHINAMFG were exported to Pakistan for water conservancy project. In 2016,cyliner with weight 90tons has been exported to Russian sucessfully .

Our hydraulic cylinder range: Bore:1000mm, Stroke:12 meter, testing pressure:50MPa We could make all kinds of hydraulic baler , hydraulic shear , scrap steel shredder machine , etc rated from 100 tons -1250tons . We could make all kinds of excavator spare parts , drill rig spare parts , steel mill spare parts according to OEM drawing , including all kinds of shaft and drill tools . We have heavy duty workshop with area 10000 square meters. There is doublelayer crane in the workshop.The lifting height could reach to 16 meter while lifting capacity could reach to 75 tons. Our machining equipment including Horizontal Lathe (11 meter ), Vertical CNC Machining Center, Display boring and milling machine, Frame type CNC machining center,CNC Lathe, Deep hole boring machine (13 meter), honing machine,etc. Testing equipment including Intelligent Pressure Test Machine, UT Detector, MT Detector, Chrome Thickness Meter, etc.

Eternal company would devote to supply first rate equipment and provide total solutionsto our customer. In the past 10 years, we devoted ourself to continuous market expanding and the researchand development of new products. Till now, our products have been export to nearly 50 countries and own good reputation from our customers .
You are welcome to visit our company !

FAQ
1. who are we?
We are based in ZheJiang , China, start from 2008,sell to Domestic Market(36.00%),Eastern Europe(21.00%),Southeast Asia(16.00%),South America(12.00%),North America(9.00%),Northern Europe(4.00%),South Asia(2.00%). There are total about 51-100 people in our office.

2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;

3.what can you buy from us?
Hydraulic Cylinder,Hydraulic Baler,Hydraulic Shear,Drill Toll,Rollers

4. why should you buy from us not from other suppliers?
We have rich experience on hydraulic baling machine, scrap shearing machine and hydraulic cylinder ,our hydraulic press has passedh through CE certification .

5. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FAS,CIP,FCA,CPT,DEQ,DDP,DDU,Express Delivery,DAF,DES;
Accepted Payment Currency:USD,EUR,CNY;
Accepted Payment Type: T/T,L/C,D/P D/A,Western Union;
Language Spoken:English,Chinese,Portuguese,Russian /* March 10, 2571 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Certification: CE
Work Temperature: Normal Temperature
Acting Way: Single Acting
Working Method: Straight Trip
Structure: Piston Type
Material: Alloy Steel

Customization:
Available

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single acting hydraulic cylinder

How does a single-acting hydraulic cylinder contribute to stable and safe force application?

A single-acting hydraulic cylinder plays a crucial role in providing stable and safe force application. Here’s a detailed explanation:

Single-acting hydraulic cylinders are designed to exert force in one direction, typically through the extension of the piston. They operate using hydraulic fluid pressure to generate and control the force applied by the cylinder. Several factors contribute to the stable and safe force application of a single-acting hydraulic cylinder:

1. Piston Design: The piston inside the hydraulic cylinder is carefully engineered to ensure smooth and controlled movement. It is typically fitted with seals to prevent fluid leakage and maintain pressure. The precise design of the piston and seals allows for efficient force transmission and minimizes the risk of sudden or erratic movements.

2. Cylinder Construction: Single-acting hydraulic cylinders are constructed with high-quality materials and undergo stringent manufacturing processes. The cylinder body is designed to withstand the forces and pressures involved in hydraulic applications. Robust construction ensures stability and safety during force application, minimizing the risk of structural failure or leakage.

3. Control Valves: Control valves play a vital role in regulating the flow of hydraulic fluid into and out of the cylinder. By controlling the rate of fluid flow, the valves enable precise and controlled force application. They allow for gradual or rapid extension of the piston, depending on the application requirements, ensuring stable and safe force application.

4. Pressure Relief Mechanisms: Single-acting hydraulic cylinders are often equipped with pressure relief mechanisms, such as relief valves or overload protection devices. These mechanisms are designed to prevent excessive pressure buildup within the cylinder, protecting against overload and potential damage. The presence of pressure relief mechanisms enhances the safety and stability of force application.

5. Mounting and Support: Proper mounting and support of the hydraulic cylinder are essential for stable force application. The cylinder should be securely attached to a suitable structure or mounting point to prevent movement or vibration during operation. Adequate support ensures that the force is applied precisely and uniformly, minimizing the risk of unintended movements or misalignment.

6. Maintenance and Inspection: Regular maintenance and inspection of the single-acting hydraulic cylinder are crucial for ensuring stable and safe force application. Routine checks for leaks, proper lubrication, and overall cylinder condition help identify any potential issues that could compromise performance or safety. Timely maintenance and necessary repairs or replacements contribute to stable and safe force application over the cylinder’s lifespan.

By considering these factors and following best practices, users can maximize the stability and safety of force application when using single-acting hydraulic cylinders.

In summary, a single-acting hydraulic cylinder contributes to stable and safe force application through careful design of the piston and cylinder, the presence of control valves and pressure relief mechanisms, proper mounting and support, and regular maintenance and inspection. These measures ensure controlled and reliable force transmission, minimizing the risk of sudden movements, structural failure, or other safety hazards.

single acting hydraulic cylinder

How does a single-acting hydraulic cylinder handle variations in cylinder stroke and extension?

A single-acting hydraulic cylinder is designed to handle variations in cylinder stroke and extension efficiently. Here’s a detailed explanation:

Single-acting hydraulic cylinders operate by applying force in one direction, typically through the extension of the piston. They utilize hydraulic fluid pressure to generate and control the force exerted by the cylinder. Here are some key points on how single-acting hydraulic cylinders handle variations in cylinder stroke and extension:

1. Adjustable Stroke Length: Single-acting hydraulic cylinders can be designed with an adjustable stroke length feature. This allows users to modify the distance the piston can extend, accommodating different requirements and variations in stroke length. By adjusting the cylinder’s stroke, it becomes possible to control the range of motion and extension of the piston, ensuring compatibility with specific applications.

2. Customizable Mounting Options: Single-acting hydraulic cylinders offer various mounting options to facilitate flexible integration into different systems. The mounting configuration can be customized to suit the specific requirements of the application. Different mounting styles, such as flange mounts, foot mounts, or clevis mounts, provide versatility in accommodating variations in cylinder stroke and extension while maintaining stability and proper alignment.

3. Control Valve Regulation: Control valves play a critical role in regulating the flow of hydraulic fluid into and out of the cylinder. By controlling the rate of fluid flow, the valves enable precise control over the extension and retraction of the piston. Adjusting the valve settings allows for fine-tuning of the cylinder’s stroke and extension, ensuring accurate and controlled movement.

4. Position Sensing Devices: Single-acting hydraulic cylinders can be equipped with position sensing devices, such as linear transducers or proximity sensors. These devices provide feedback on the cylinder’s position and extension, allowing for real-time monitoring and control. By detecting and measuring variations in stroke length and extension, position sensing devices enable precise positioning and ensure consistent performance.

5. Cylinder Cushioning: To handle variations in cylinder stroke and extension, single-acting hydraulic cylinders may incorporate cushioning mechanisms. Cushioning helps to dampen the impact during the piston’s approach to the end of its stroke, reducing shock and minimizing the risk of damage. The cushioning feature allows for controlled deceleration and smooth operation, regardless of variations in stroke length.

It is important to consider the specific application requirements and consult the manufacturer’s guidelines to ensure proper handling of variations in cylinder stroke and extension. Manufacturers often provide recommendations and technical specifications to ensure optimal performance and safe operation.

In summary, single-acting hydraulic cylinders handle variations in cylinder stroke and extension through adjustable stroke length, customizable mounting options, control valve regulation, position sensing devices, and cushioning mechanisms. These features allow for precise control, flexibility, and reliable performance in a wide range of applications.

single acting hydraulic cylinder

Can single-acting hydraulic cylinders be repaired or maintained when necessary?

Yes, single-acting hydraulic cylinders can be repaired and maintained when necessary. Here’s a detailed explanation:

1. Inspection and Assessment: When a single-acting hydraulic cylinder requires repair or maintenance, the first step is to conduct a thorough inspection and assessment. This involves examining the cylinder for any signs of wear, damage, leakage, or performance issues. The inspection helps identify the specific areas that need attention and guides the repair and maintenance process.

2. Seal Replacement: One of the common maintenance tasks for single-acting hydraulic cylinders is seal replacement. Over time, the seals can wear out or become damaged, leading to leaks and decreased performance. By replacing the seals, the cylinder can regain its proper functioning and prevent further issues.

3. Component Replacement: Depending on the extent of the damage or wear, it may be necessary to replace certain components of the single-acting hydraulic cylinder. This can include the piston, rod, cylinder barrel, or other internal parts that have experienced significant deterioration. Component replacement ensures the cylinder’s reliability and extends its service life.

4. Cleaning and Lubrication: During the repair and maintenance process, it is important to clean the single-acting hydraulic cylinder thoroughly. This involves removing any dirt, debris, or contaminants that may have accumulated. Additionally, proper lubrication of the cylinder’s moving parts is essential to reduce friction, prevent excessive wear, and promote smooth operation.

5. Testing and Adjustment: After the repair and maintenance tasks are completed, it is crucial to test the single-acting hydraulic cylinder to ensure its proper functionality. This may involve conducting pressure tests, checking for leaks, and verifying the cylinder’s movement and force output. If necessary, adjustments can be made to fine-tune the cylinder’s performance.

6. Preventive Maintenance: Implementing a preventive maintenance program is beneficial for single-acting hydraulic cylinders. Regularly scheduled maintenance activities, such as inspection, cleaning, lubrication, and minor adjustments, can help identify and address potential issues before they escalate. Preventive maintenance minimizes unexpected breakdowns, extends the cylinder’s lifespan, and ensures optimal performance.

7. Expert Assistance: In some cases, complex repairs or maintenance tasks may require the expertise of hydraulic professionals or specialized technicians. These professionals have in-depth knowledge and experience in repairing and maintaining hydraulic cylinders. Seeking expert assistance can help ensure that the repairs are performed correctly and effectively.

In summary, single-acting hydraulic cylinders can be repaired and maintained when necessary. The process typically involves inspection and assessment, seal replacement, component replacement, cleaning and lubrication, testing and adjustment, preventive maintenance, and seeking expert assistance when required. By following proper repair and maintenance procedures, the cylinder’s performance, reliability, and service life can be enhanced.

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editor by CX 2024-02-24