China Hot selling Hydraulic Telescopic Cylinder vacuum pump for ac

Product Description

Product Description

Product Application

CHINAMFG company design and manufacture hydraulic cylinders for different applications:

Petroleum drilling machinery


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: Ø500mm
Max stroke: 12Meter
Max text pressure: 37.5MPa

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


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.


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Certification: CE, ISO9001
Pressure: High Pressure
Work Temperature: Low Temperature
Acting Way: Double Acting
Working Method: Straight Trip
Adjusted Form: Regulated Type


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

Integration of Hydraulic Cylinders with Equipment Requiring Rapid and Dynamic Movements

Hydraulic cylinders can indeed be integrated with equipment that requires rapid and dynamic movements. While hydraulic systems are generally known for their ability to provide high force and precise control, they can also be designed and optimized for applications that demand fast and dynamic motion. Let’s explore how hydraulic cylinders can be integrated with such equipment:

  1. High-Speed Hydraulic Systems: Hydraulic cylinders can be part of high-speed hydraulic systems designed specifically for rapid and dynamic movements. These systems incorporate features such as high-flow valves, optimized hydraulic circuitry, and responsive control systems. By carefully engineering the system components and hydraulic parameters, it is possible to achieve the desired speed and responsiveness, enabling the equipment to perform rapid movements.
  2. Valve Control: The control of hydraulic cylinders plays a crucial role in achieving rapid and dynamic movements. Proportional or servo valves can be used to precisely control the flow of hydraulic fluid into and out of the cylinder. These valves offer fast response times and precise flow control, allowing for rapid acceleration and deceleration of the cylinder’s piston. By adjusting the valve settings and optimizing the control algorithms, equipment can be designed to execute dynamic movements with high speed and accuracy.
  3. Optimized Cylinder Design: The design of hydraulic cylinders can be optimized to facilitate rapid and dynamic movements. Lightweight materials, such as aluminum alloys or composite materials, can be used to reduce the moving mass of the cylinder, enabling faster acceleration and deceleration. Additionally, the cylinder’s internal components, such as the piston and seals, can be designed for low friction to minimize energy losses and enhance responsiveness. These design optimizations contribute to the overall speed and dynamic performance of the equipment.
  4. Accumulator Integration: Hydraulic accumulators can be integrated into the system to enhance the dynamic capabilities of hydraulic cylinders. Accumulators store pressurized hydraulic fluid, which can be rapidly released to supplement the flow from the pump during high-demand situations. This stored energy can provide an extra boost of power, allowing for faster and more dynamic movements. By strategically sizing and configuring the accumulator, the system can be optimized for the specific rapid and dynamic requirements of the equipment.
  5. System Feedback and Control: To achieve precise and dynamic movements, hydraulic systems can incorporate feedback sensors and advanced control algorithms. Position sensors, such as linear potentiometers or magnetostrictive sensors, provide real-time position feedback of the hydraulic cylinder. This information can be used in closed-loop control systems to maintain precise positioning and execute rapid movements. Advanced control algorithms can optimize the control signals sent to the valves, ensuring smooth and dynamic motion while minimizing overshooting or oscillations.

In summary, hydraulic cylinders can be integrated with equipment that requires rapid and dynamic movements by utilizing high-speed hydraulic systems, employing responsive valve control, optimizing cylinder design, integrating accumulators, and incorporating feedback sensors and advanced control algorithms. These measures enable hydraulic systems to deliver the speed, responsiveness, and precision necessary for equipment operating in dynamic environments. By leveraging the capabilities of hydraulic cylinders, manufacturers can design and integrate systems that meet the requirements of applications demanding rapid and dynamic movements.

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.


– 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.


– 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.

China Hot selling Hydraulic Telescopic Cylinder   vacuum pump for ac	China Hot selling Hydraulic Telescopic Cylinder   vacuum pump for ac
editor by CX 2024-01-06

Hydraulic cylinders

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