Product Description

Product Description

KS-RCH Series, Single-acting Hollow Plunger Cylinder (Spring Return)

1. CHINAMFG center hole hydraulic jack cylinder provide versatility in testing, maintenance andtensioning applications. The hollow plunger design allows for both pull and push forces.
2. Single-acting spring return.
3. Cylinders are nickel-plated, floating center tube on models over 20 tons increases product life.
4. Baked enamelfinish for increased corrosion resistance.
5.Collar threads for easy fixturing6.RCH-120 cylinders include AR-630 coupler and has 1/4 NPTF port.
7. RCH-121 and RCH-1211 cylinders have FZ-1630 reducer and AR-630 coupler, all other modelsfeature CR-400 coupler

Very low price and very good quality , compare POWER TEAM and CHINAMFG models, this type airhydraulic pump was same quality and function

RCH-121 Single-acting Hollow Plunger Hydraulic Cylinder

Max Operating Pressure:   700Bar / 10,000Psi
Capacity:                             13tons 
Stroke:                                 42mm / 1.63in
Collapsed Height:              120mm / 4.75in  
Center Hole Dia.:                19.6mm / 0.77in     
Return Type:                       Single-Acting, Spring Return
Plungler Type:                    Hollow
Material:                              Alloy Steel
Oil Capacity:                      75cm³
Weight:                               2.8kg / 6.2Ibs


Hydraulic Manual Pump Set

1*  Single-acting Manual Pump,          P-120
1*  Hydraulic Cylinder,                         RCH-121, 13tons, 42mm stroke
1*  Pressure Guage with coupler,        KN-63-70
1*  Guage Adapter,                                GA-3
1*  1.8meter High Pressure Hose with couplers

Pump Details:
Oil tank–350ml, Oil port: 3/8”

Product Parameters

Quick Selection Chart :

For complete techniacl information please contact the sales.

Model Capacity
Stroke B
Oil Capacity
Outside Dia.
Effective Area
Saddle Protr. from Plgr.
K (mm)
Center Hole Dia.
Bolt Circle
KSRCH-120 13 8 14 55 69 17.9 19.6 50.8 1.5
KSRCH-121* 42 75 120 2.8
KSRCH-1211 42 75 120 2.8
KSRCH-123 76 136 184 50.8 4.4
KSRCH-202* 20 49 150 162 98 30.7 9.7 26.9 82.6 7.7
KSRCH-206 155 476 306 14.1
KSRCH-302* 30 64 298 178 114 46.6 9.0 33.3 92.2 10.9
KSRCH-306 155 722 330 21.8
KSRCH-603* 60 76 626 247 159 82.3 12.0 53.8 130.3 28.1
KSRCH-606 153 1259 323 35.4
KSRCH-1003* 100 76 1011 254 212 133.0 12.0 79.0 177.8 63.0

Please tell me your needs, i will give you a suitable sloution~

Cases Show

We can make different types cylinders according to various construction requirements….
Please contact 
Davina Chen:  -199-5169-4295 for detals.

Related Products

All tools can be ordered separately , please tell seller your rquirements.

We recommend the suitable tools for you~

Company Profile

Payment & Shipping

If you don’t have a forwarder in China, please contact sales.      We will quote you the cheapest / fastest shipping cost.

We supply:

All express , by sea , by air , by sea to door , by air to door ….etc..

Davina Chen:  -199-5169-4295

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Certification: CE, ISO9001
Pressure: High Pressure
Work Temperature: Normal Temperature
Acting Way: Single Acting
Working Method: Hydraulic
Adjusted Form: Regulated Type
US$ 152/Piece
1 Piece(Min.Order)




single acting hydraulic cylinder

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.

single acting hydraulic cylinder

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.

single acting hydraulic cylinder

What is a single-acting hydraulic cylinder and how does it operate?

A single-acting hydraulic cylinder is a type of hydraulic cylinder that operates in one direction, utilizing hydraulic pressure to exert force in the extending stroke. Here’s a detailed explanation:

1. Construction: A single-acting hydraulic cylinder consists of a cylindrical barrel, a piston, a piston rod, and a single hydraulic port. The cylinder barrel houses the piston, which divides the cylinder into two chambers: the pressure chamber and the return chamber. The piston rod is connected to one end of the piston and extends outside the cylinder. The hydraulic port is located at the base of the cylinder and is connected to a hydraulic power source.

2. Operation: When hydraulic fluid is supplied to the pressure chamber through the hydraulic port, it exerts pressure on the piston, causing the piston to move in the extending stroke. This movement pushes the piston rod outward, generating force at the end of the rod. The force generated by the hydraulic pressure can be used to perform various tasks, such as lifting, pushing, or holding objects.

3. Return Stroke: Unlike double-acting hydraulic cylinders that can generate force in both directions, single-acting cylinders rely on external forces or mechanisms for the return stroke. When the hydraulic pressure is released or redirected, the piston is pushed back to its original position by external forces, such as gravity or springs. This return stroke is passive and does not generate force.

4. Applications: Single-acting hydraulic cylinders are commonly used in applications where force is required in one direction only, and the return stroke can be accomplished by external means. Some common applications include lifting equipment, dump trucks, hydraulic jacks, and certain types of industrial machinery.

5. Advantages: Single-acting hydraulic cylinders have a simpler design compared to double-acting cylinders, which typically means they are more cost-effective and easier to maintain. They are also well-suited for applications where the return stroke can be accomplished by external forces, eliminating the need for additional hydraulic components.

6. Limitations: The main limitation of single-acting hydraulic cylinders is their inability to generate force in the retracting stroke. This restricts their use in applications that require bidirectional force or precise control over both extending and retracting movements.

In summary, a single-acting hydraulic cylinder operates by utilizing hydraulic pressure to generate force in the extending stroke. It consists of a barrel, piston, piston rod, and a single hydraulic port. While they have certain limitations, single-acting cylinders are cost-effective and suitable for applications where force is required in one direction and the return stroke can be achieved by external means.

China OEM Rch-121, 13.8 Ton Capacity, 1.63 in Stroke, Single-Acting, Hollow Plunger Hydraulic Jack Cylinder CZPT Same   wholesaler China OEM Rch-121, 13.8 Ton Capacity, 1.63 in Stroke, Single-Acting, Hollow Plunger Hydraulic Jack Cylinder CZPT Same   wholesaler
editor by CX 2024-03-04