Product Description

50 ton hydraulic cylinder for pressure machine

Hydraulic cylinder can bear partial loading is 5% of rated pressure. High pressure alloy cylinder is very durable, especially in the larger project, it is easily to be operated and control. It can be used for lifting heavy machine, bridge project, hydraulic engineering, harbour construction and other equipment. It has large output, light weight, remote control and other advantages, it can match with our high pressure oil pump, it can reach jack, push, pull and extrusion and kinds of working.

2. Features

1. Integral stop ring provides piston blow-out protection
2. Double-acting for positive retraction
3. Baked enamel outside finish and plated pistons provide superior corrosion resistance
4. Safety valve in retract side of cylinder helps to prevent damage in case of accidental over-pressurization
5. Interchangeable, hardened grooved saddles are standard
6. Plunger wiper reduces contamination, extending cylinder life


Model Tonnage T Stroke mm Closed height mm Extend height mm Outer diameter of oil cylinder mm Dimension of plunger mm Dimension of oil pump  mm Weight kg Pressure
STQ50-100 50 100 225 325 127 70 100 35 63MPA
STQ50-160 160 285 445 39
STQ50-200 200 325 525 46
STQ50-300 300 425 725 48
STQ50-500 500 625 1125 63
STQ100-100 100 100 250 350 180 100 140 58
STQ100-160 160 310 470 63
STQ100-200 200 350 550 78
STQ100-300 300 450 750 96
STQ100-500 500 650 1150 130
STQ150-100 150 100 260 360 219 125 180 58
STQ150-160 160 320 480 69
STQ150-200 200 360 560 86
STQ150-300 300 460 760 103
STQ150-500 500 660 1160 255
STQ200-100 200 100 285 385 240 150 200 96
STQ200-160 160 345 505 103
STQ200-200 200 385 585 116
STQ200-300 300 485 785 161
STQ200-500 500 685 1185 221
STQ320-100 320 100 310 410 330 180 250 196
STQ320-160 160 370 530 240
STQ320-200 200 410 610 258
STQ320-300 300 510 810 311
STQ320-500 500 710 1210 456
STQ400-100 400 100 355 455 380 200 290 198
STQ400-160 160 415 575 231
STQ400-200 200 460 660 264
STQ400-300 300 555 855 367
STQ400-500 500 755 1255 456
STQ500-100 500 100 360 460 430 200 320 323
STQ500-160 160 420 580 330
STQ500-200 200 460 660 420
STQ500-300 300 560 860 581
STQ500-500 500 760 1260 599
STQ630-100 630 100 417 517 500 250 360 560
STQ630-160 160 477 637 633
STQ630-200 200 517 717 696
STQ630-300 300 617 917 898
STQ630-500 500 817 1317 1250
STQ800-100 800 100 488 588 560 300 400 896
STQ800-200 200 598 798 1040
STQ800-300 300 698 998 1380
STQ800-500 500 898 1398 1520
STQ1000-100 1000 100 530 630 600 320 450 1286
STQ1000-200 200 630 830 1332
STQ1000-300 300 760 1060 1663

If the model you are looking for is not available, please contact us! We will customize it according to your needs.

3. Application:
Our hydraulic jacks have been widely used for industrial field, such as steel plant, cement industry, chemical and refinery, bridge, railway, highway, hydropower station, ship repair, building, construction and maintenance.

4.Company information:
HangZhou Lead Equipment Co., Ltd. Have been in hydraulic tools industry since 2009.
Our main products as follow:
Single acting hydraulic jack/cylinder/ram (10-100 tons)
Single acting hollow hydraulic jack/cylinder/ram (12-100 tons)
Double acting hydraulic jack/cylinder/ram (50-2000 tons)
Double acting hollow hydraulic jack/cylinder/ram (50-2000 tons)
Single acting hydraulic jack/cylinder/ram with lock nut (55-200 tons)
Thin type single acting hydraulic jack/cylinder/ram (10-200 tons)
Ultrathin hydraulic jack/cylinder/ram (10-200 tons)
Flange type hydraulic jack/cylinder/ram (10-630 tons)
Synchronous hydraulic jack (10-1000 tons)
Hydraulic accessories: high pressure oil hose, couplers, seal kits, mainfold, etc.
All the tonnage, stroke, height can be customized according to client's requirements, supply the best quality and serve. Our warranty is 2 years.

Certification: CE, SGS
Pressure: High Pressure
Work Temperature: Normal Temperature
Acting Way: Double Acting
Working Method: Rotary
Adjusted Form: Switching 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

Handling the Challenges of Minimizing Fluid Leaks and Contamination in Hydraulic Cylinders

Hydraulic cylinders face challenges when it comes to minimizing fluid leaks and contamination, as these issues can impact the performance, reliability, and lifespan of the system. However, there are several measures and design considerations that help address these challenges effectively. Let's explore how hydraulic cylinders handle the challenges of minimizing fluid leaks and contamination:

  1. Sealing Systems: Hydraulic cylinders employ advanced sealing systems to prevent fluid leaks. These systems typically include various types of seals, such as piston seals, rod seals, and wiper seals. The seals are designed to create a tight and reliable barrier between the moving components of the cylinder and the external environment, minimizing the risk of fluid leakage.
  2. Seal Material Selection: The choice of seal materials is crucial in minimizing fluid leaks and contamination. Hydraulic cylinder manufacturers carefully select seal materials that are compatible with the hydraulic fluid used and resistant to wear, abrasion, and chemical degradation. This ensures the longevity and effectiveness of the seals, reducing the likelihood of leaks or premature seal failure.
  3. Proper Installation and Maintenance: Ensuring proper installation and regular maintenance of hydraulic cylinders is essential for minimizing fluid leaks and contamination. During installation, attention should be given to proper alignment, torqueing of bolts, and adherence to recommended procedures. Regular maintenance includes inspecting seals, replacing worn-out components, and addressing any signs of leakage promptly. Proper maintenance practices help identify and rectify issues before they escalate and cause significant problems.
  4. Contamination Control: Hydraulic cylinders incorporate measures to control contamination and maintain fluid cleanliness. This includes the use of filtration systems, such as in-line filters, to remove particles and contaminants from the hydraulic fluid. Additionally, hydraulic reservoirs often have breathers and desiccant filters to prevent moisture and airborne contaminants from entering the system. By controlling contamination, hydraulic cylinders minimize the risk of damage to internal components and maintain optimal system performance.
  5. Environmental Protection: Hydraulic cylinders may be equipped with protective features to safeguard against external contaminants. For example, bellows or protective boots can be installed to shield the rod and seals from debris, dirt, or moisture present in the operating environment. These protective measures help extend the life of the seals and enhance the overall reliability of the hydraulic cylinder.

In summary, hydraulic cylinders employ sealing systems, appropriate seal materials, proper installation and maintenance practices, contamination control measures, and environmental protection features to handle the challenges of minimizing fluid leaks and contamination. By implementing these measures, manufacturers can ensure reliable and long-lasting hydraulic cylinder performance, minimize the risk of fluid leakage, and maintain the cleanliness of the hydraulic system.

hydraulic cylinder

How do hydraulic cylinders accommodate variations in stroke length and force requirements?

Hydraulic cylinders are designed to accommodate variations in stroke length and force requirements, providing flexibility and adaptability for different applications. They can be tailored to meet specific needs by considering factors such as piston diameter, rod diameter, hydraulic pressure, and cylinder design. Here's a detailed explanation of how hydraulic cylinders accommodate variations in stroke length and force requirements:

1. Cylinder Size and Design:

- Hydraulic cylinders come in various sizes and designs to accommodate different stroke lengths and force requirements. The cylinder's diameter, piston area, and rod diameter are key factors that determine the force output. Larger cylinder diameters and piston areas can generate greater force, while smaller diameters are suitable for applications requiring lower force. By selecting the appropriate cylinder size and design, stroke lengths and force requirements can be effectively accommodated.

2. Piston and Rod Configurations:

- Hydraulic cylinders can be designed with different piston and rod configurations to accommodate variations in stroke length. Single-acting cylinders have a single piston and can provide a stroke in one direction. Double-acting cylinders have a piston on both sides, allowing for strokes in both directions. Telescopic cylinders consist of multiple stages that can extend and retract, providing a longer stroke length compared to standard cylinders. By selecting the appropriate piston and rod configuration, the desired stroke length can be achieved.

3. Hydraulic Pressure and Flow:

- The hydraulic pressure and flow rate supplied to the cylinder play a crucial role in accommodating variations in force requirements. Increasing the hydraulic pressure increases the force output of the cylinder, enabling it to handle higher force requirements. By adjusting the pressure and flow rate through hydraulic valves and pumps, the force output can be controlled and matched to the specific requirements of the application.

4. Customization and Tailoring:

- Hydraulic cylinders can be customized and tailored to meet specific stroke length and force requirements. Manufacturers offer a wide range of cylinder sizes, stroke lengths, and force capacities to choose from. Additionally, custom-designed cylinders can be manufactured to suit unique applications with specific stroke length and force demands. By working closely with hydraulic cylinder manufacturers, it is possible to obtain cylinders that precisely match the required stroke length and force requirements.

5. Multiple Cylinders and Synchronization:

- In applications that require high force or longer stroke lengths, multiple hydraulic cylinders can be used in combination. By synchronizing the movement of multiple cylinders through the hydraulic system, the stroke length and force output can be effectively increased. Synchronization can be achieved using mechanical linkages, electronic controls, or hydraulic circuitry, ensuring coordinated movement and force distribution across the cylinders.

6. Load-Sensing and Pressure Control:

- Hydraulic systems can incorporate load-sensing and pressure control mechanisms to accommodate variations in force requirements. Load-sensing systems monitor the load demand and adjust the hydraulic pressure accordingly, ensuring that the cylinder delivers the required force without exerting excessive force. Pressure control valves regulate the pressure within the hydraulic system, allowing for precise control and adjustment of the force output based on the application's needs.

7. Safety Considerations:

- When accommodating variations in stroke length and force requirements, it is essential to consider safety factors. Hydraulic cylinders should be selected and designed with an appropriate safety margin to handle unexpected loads or variations in operating conditions. Safety mechanisms such as overload protection valves and pressure relief valves can be incorporated to prevent damage or failure in situations where the force limits are exceeded.

By considering factors such as cylinder size and design, piston and rod configurations, hydraulic pressure and flow, customization options, synchronization, load-sensing, pressure control, and safety considerations, hydraulic cylinders can effectively accommodate variations in stroke length and force requirements. This flexibility allows hydraulic cylinders to be tailored to meet the specific demands of a wide range of applications, ensuring optimal performance and efficiency.

China Standard 50 ton hydraulic cylinder for pressure machine   with Best Sales China Standard 50 ton hydraulic cylinder for pressure machine   with Best Sales
editor by CX 2023-10-25