Product Description
30Ton hydraulic hollow plunger jacks
Double Acting Relief Valves Hollow Plunger Compact Hydraulic Jack Cylinders combines all the design features of the single-acting and double-acting and the advantages of design, which improves the efficiency. And particularly in relatively long stroke, you can make full use of its role in generating a hydraulic traction.
The jack’s piston center has through hole, widely used in nuclear power plants, tunnels, underground engineering, construction and other occasions, which achieve preload process.What’s more, it can also be applied to other similar situations.
SOV general purpose cylinders are available in hundreds of different mechanical or hydraulic cylinder jack configurations. Whatever the industrial application; lifting, pushing, pulling and available in range of force capacities, stroke lengths or size restrictions. Single acting, hollow plunger, or low height, you can be sure that CHINAMFG has the hydraulic cylinder jack to suit your high force application.
Single Acting Hollow Plunger Hydraulic Cylinder
Single acting hollow plunger hydraulic cylinder applys to processing, maintenance and traction work. The special design of the hollow piston rod makes the tow bar or cable can pass through the hydraulic cylinder to conduct lifting or jacking operation, commonly used in the work of backward traction and CHINAMFG extrusion. Equipped with interchangeable steel reinforced piston base, can also be used for regular lifting operation.
Features
* Baked enamel finish for increased corrosion resistance.
* Hollow plunger design allows for both pull and push forces. * Collar threads for easy fixturing.
* Built-in scraper seal reduces contamination, extending cylinder life.
* 3/8 “- 18NPT coupler and dust cap included on all models.
Details lmages
Product Specifications
| Item No |
Capacity
(T) |
Max. Working Pressure
(MPa) |
Closed Height
A (mm) |
Sroke
(mm) |
Center Hole Diameter Y (mm) |
Weight
(kg) |
| SOV-RCH-206 | 20 | 70 | 306 | 155 | 26.9 | 14.1 |
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Company Profile
SOV Hydraulic Technoloy (ZheJiang ) Co., Ltd. is a professional manufacturing in hydraulic tools and products, we have been in the industry for more than 20 years. Since the establishment in 1995, we successfully transformed from OEM manufacturer to create our own brand SOV, and our factory has been approved by CE, ISO9001:2008 consecutively. Our Products have been widely used in petrochemical, cement, shipbuilding, steel plant and heavy constructions areas, etc.
We produce and supply Hydraulic tools, such as:
* Hydraulic cylinders, jacks (5-1000ton), single acting and double acting, hollow plunger;
* Hydraulic/ electric /pneumatic torque wrench (100-72000Nm);
* Hydraulic bolt tensioner (100-11486NM);
* Hydraulic pumps, manual and electric type (max up to 3000bar);
* Integrated hydraulic lifting system solutions ( 4-72 points lifting system for house translation or leveling, bridge supporting and tank welding supporting)
* Hydraulic nut and couplings. (M50-Tr1000)
FAQ
Q1: How can contact sales ?
A1: Please click the contact find our website and email address.
Q2: How can I buy CHINAMFG products in my country?
A2: Please send us an inquiry or email , we will reply to your if there is distributor in your country.
Q3: Can I have CHINAMFG products catalog and price list ?
A3:Please visit our English website:sov-china to download our E-catalog, and send us an email for price list.
Q4: How long does it take to get the product If I place an order?
A4: If products stock available, after confirmation of your payment or advance payment , we will pack and deliver in 3-7 days. If you select international parcel service, it can be arrived in 3-7 days. If it is by sea shipment, it will take 15-45 days depending on different locations
Q5: How to make payment ?
A5: First send us an inquiry, and we will reply you quotation, if our price suits you, we will prepare proforma invoice with our banking details.
Q6: Manufacturing time?
A6: Please send us an inquiry for stock condition, if we don’t have stock, and it is our standard products (refer to our model), it can be produced in 10-20 days. If it is customized, not our standard products, it will take 20-45 days to produce.
WHY CHOOSE US
Our Services:
* 24 hours online service;
* One year warranty, repair and service for the whole life;
* Question report will be replied in 48 hours;
* Quality guaranteed.
Packaging:
* All products will be packed with wooden case.
Shipping:
* Small quantity: by international exress, such as DHL, TNT, FEDEX, UPS, etc. depending on the customers’ choice. Goods will arrive within 7 days in normal cicumstances;
* Large quantity: by sea transportation. Goods will arrive in 10~45 days, according to the diatance.
| Material: | Steel |
|---|---|
| Structure: | Piston Cylinder |
| Power: | Hydraulic |
| Standard: | Standard, Nonstandard |
| Pressure Direction: | Single-acting Cylinder |
| Double-Acting Cylinder Type: | Common Cylinder |
| Customization: |
Available
|
|
|---|

How does a single-acting hydraulic cylinder contribute to energy-efficient force generation?
A single-acting hydraulic cylinder contributes to energy-efficient force generation through its design and operating principles. Here’s a detailed explanation:
1. Unidirectional Force: Single-acting hydraulic cylinders generate force in one direction, typically in the extension stroke. This unidirectional force generation eliminates the need for hydraulic fluid to exert force in the opposite direction, resulting in energy savings. The hydraulic system only needs to supply fluid to extend the cylinder, while the retraction of the piston is achieved through the force of gravity or other external means, reducing the overall energy consumption.
2. Reduced Fluid Volume: Single-acting hydraulic cylinders require a smaller volume of hydraulic fluid compared to double-acting cylinders. Since these cylinders operate primarily in one direction, the fluid volume needed for extension strokes is lower. This reduction in fluid volume leads to energy savings in terms of pumping and circulating the hydraulic fluid.
3. Lower Pumping Requirements: The unidirectional force generation of single-acting hydraulic cylinders reduces the workload on the hydraulic pump. As the pump only needs to supply fluid for extension strokes, the pump size and power requirements can be optimized, leading to energy efficiency. This is particularly beneficial in applications where the hydraulic system is powered by electric motors or other energy sources.
4. Gravity-Assisted Retraction: Single-acting hydraulic cylinders often utilize the force of gravity or external forces to retract the piston during the return stroke. By leveraging these external forces, the hydraulic system can minimize the energy required for retraction. This is particularly advantageous in applications where the weight of the load or other external factors can assist in the retraction process.
5. System Optimization: Single-acting hydraulic cylinders allow for system optimization to maximize energy efficiency. By carefully selecting cylinder sizes, operating pressures, and flow rates, the hydraulic system can be designed to match the specific force requirements of the application. This optimization ensures that the system operates at its most energy-efficient operating point, minimizing energy waste and maximizing overall system performance.
6. Regenerative Systems: In certain applications, single-acting hydraulic cylinders can be integrated into regenerative hydraulic systems. These systems capture and reuse the energy generated during the retraction stroke, effectively recycling the energy that would otherwise be dissipated. By harnessing this regenerative energy, the overall energy efficiency of the system is significantly improved.
By employing these energy-efficient design and operating principles, single-acting hydraulic cylinders contribute to reduced energy consumption and improved overall system efficiency.

Can single-acting hydraulic cylinders be employed in hydraulic jacks?
Yes, single-acting hydraulic cylinders can be employed in hydraulic jacks. Here’s a detailed explanation:
Hydraulic jacks are widely used for lifting heavy loads in various applications, including automotive repair, construction, and industrial settings. They rely on hydraulic cylinders to generate the lifting force required to raise the load. Single-acting hydraulic cylinders are commonly employed in hydraulic jacks due to their simplicity and effectiveness. Here are some key points on using single-acting hydraulic cylinders in hydraulic jacks:
1. Lifting Mechanism: Single-acting hydraulic cylinders provide the lifting mechanism in hydraulic jacks. When hydraulic pressure is applied to the cylinder, the piston extends, exerting force on a load-bearing platform or lifting arm. This force lifts the load, allowing for easy lifting and positioning of heavy objects.
2. Compact Design: Single-acting hydraulic cylinders have a compact design, making them well-suited for integration into hydraulic jacks. The cylinder’s small size allows for efficient use of space, ensuring that the jack remains portable and easy to maneuver. The compact design also contributes to the overall stability and balance of the jack during lifting operations.
3. Manual Pumping: Hydraulic jacks employing single-acting hydraulic cylinders often feature a manual pumping mechanism to build hydraulic pressure. The operator pumps a handle or lever to actuate a hand pump, which pressurizes the hydraulic fluid and extends the cylinder’s piston. The simplicity of the manual pumping system makes hydraulic jacks with single-acting cylinders easy to operate and suitable for a wide range of applications.
4. Load Capacity: Single-acting hydraulic cylinders used in hydraulic jacks are designed to handle specific load capacities. The load capacity depends on factors such as the cylinder’s bore size, piston diameter, and overall construction. Hydraulic jacks employing single-acting cylinders are available in various load capacities to accommodate different lifting requirements, ranging from lightweight jacks for small loads to heavy-duty jacks for larger loads.
5. Safety Features: Hydraulic jacks incorporating single-acting hydraulic cylinders often include safety features to ensure safe and controlled lifting operations. These features may include overload protection valves, which prevent the jack from lifting beyond its rated capacity, and built-in pressure relief valves, which release excess pressure to avoid overloading the cylinder. Safety mechanisms contribute to the overall reliability and user safety when using hydraulic jacks.
It is important to follow the manufacturer’s guidelines and recommendations for the proper use and maintenance of hydraulic jacks employing single-acting hydraulic cylinders. Regular inspection and servicing are necessary to ensure optimal performance and safe operation.
In summary, single-acting hydraulic cylinders can be effectively employed in hydraulic jacks to provide the lifting mechanism. Their compact design, manual pumping operation, load capacity options, and safety features make them suitable for a wide range of lifting applications.

How does a single-acting hydraulic cylinder manage variations in load capacity and weight?
A single-acting hydraulic cylinder is designed to effectively manage variations in load capacity and weight in hydraulic systems. Here’s a detailed explanation:
1. Adjustable Force Output: Single-acting hydraulic cylinders allow for adjustable force output, which enables them to handle variations in load capacity and weight. The force generated by the cylinder can be controlled by adjusting the hydraulic pressure supplied to the pressure chamber. By increasing or decreasing the pressure, the cylinder can generate the necessary force to accommodate different loads and weight requirements.
2. Mechanical Advantage: Single-acting hydraulic cylinders utilize the mechanical advantage of the piston design to manage variations in load capacity and weight. The piston has a larger effective area on the pressure side and a smaller effective area on the return side. This size difference creates a mechanical advantage, amplifying the force output compared to the hydraulic pressure input. As a result, the cylinder can generate a greater force to handle heavier loads.
3. Load-Sensing Control: In some hydraulic systems, load-sensing control mechanisms can be incorporated to further manage variations in load capacity and weight. Load-sensing systems continuously monitor the load on the cylinder and adjust the hydraulic pressure accordingly. This ensures that the cylinder generates the appropriate force based on the actual load, optimizing efficiency and preventing overloading or underutilization.
4. Customizable Cylinder Design: Single-acting hydraulic cylinders can be customized in terms of size, dimensions, and force capacity to match specific load requirements. By selecting the appropriate cylinder size and specifications, variations in load capacity and weight can be effectively managed. Customization ensures that the cylinder is appropriately sized and capable of generating the necessary force to handle the expected loads.
5. System Design Considerations: Proper system design considerations play a crucial role in managing variations in load capacity and weight. The hydraulic system should be designed with the appropriate pump capacity, valve selection, and overall system configuration to ensure optimal performance. By considering the anticipated load variations and weight requirements, the hydraulic system can be designed to accommodate these variations effectively.
6. Safety Factors and Overload Protection: Single-acting hydraulic cylinders are typically designed with safety factors to provide a margin of safety and accommodate variations in load capacity and weight. These safety factors help prevent overloading and ensure the cylinder can handle unexpected increases in load or weight. Additionally, incorporating overload protection mechanisms, such as relief valves or load-limiting devices, adds an extra layer of protection against excessive loads.
In summary, a single-acting hydraulic cylinder manages variations in load capacity and weight through adjustable force output, mechanical advantage, load-sensing control, customizable cylinder design, system design considerations, safety factors, and overload protection. These features and considerations allow the cylinder to effectively adapt to changes in load requirements and ensure reliable and efficient operation within a hydraulic system.


editor by CX 2023-10-31