Product Description

CHINAMFG hollow plunger cylinders provide versatility in testing, maintenance and pensioning  applications. The hollow plunger design allows for both pull and push forces

  1. Single-acting spring return
  2. Cylinders are nickel-plated, floating center tube on models over 20 tons increases product life
  3. Baked enamel finish for increased corrosion resistance
  4. Collar threads for easy fixturing
  5. SOV-RCH-120 cylinders include AR-630 coupler and has 1/4 NPTF port
  6. SOV-RCH-121 and SOV-RCH-1211 cylinders have FZ-1630 reducer and AR-630 coupler, all other models feature CR-400 coupler


Stroke Cylinder
  ton (kN) mm cm2 cm3 mm mm mm mm kg
SOV-RCH-120 13 (125) 8 17,9 14 55 63 69 19,6 1,5
SOV-RCH-121* 42 17,9 75 120 162 69 19,6 2,8
SOV-RCH-1211 42 17,9 75 120 162 69 19,6 2,8
SOV-RCH-123 76 17,9 136 184 260 69 19,6 4,4
SOV-RCH-202* 20 (215) 49 30,7 150 162 211 98 26,9 7,7
SOV-RCH-206 155 30,7 476 306 461 98 26,9 14,1
SOV-RCH-302* 30 (326) 64 46,6 298 178 242 114 33,3 10,9
SOV-RCH-306 155 46,6 722 330 485 114 33,3 21,8
SOV-RCH-603* 60 (576) 76 82,3 626 247 323 159 53,8 28,1
SOV-RCH-606 153 82,3 1259 323 476 159 53,8 35,4
SOV-RCH-1003* 95 (931) 76 133 1011 254 330 212 79,0 63

* For lightweight aluminum models, see SOV-RCH-series
*Also available as cylinder-pump sets.


Company Introduction

SOV 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 construction areas, etc.



Since the establishment in 1995, we successfully transformed from OEM manufacturer for many international brands, to create our own brand SOV, and our factory has been approved by CE, ISO9001:2008 consecutively.


Main Clients:

Our customers include the most prominent corporation in China, such as China Petroleum, Sinopec, Baosteel, Xihu (West Lake) Dis. Shipyards, Conch Cement, China Metallurgical Group Corporation, and so on. The quality has been trusted by mega-corporation and multinationals.


Q1: How can contact sales ?

A1: Please call:   21 685 61366 for pre-sales or click the contact find our website and email address.  

Q2: How can I buy SOV 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 SOV 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 SOV ?

Quality: SOV has been in the industry for than 20 years. We have been trusted by domestic mega statedstate owned companies, as well as international distributors and renowned brands. We put quality as lifeline. We never manufacture or sale defected product, or lowering our price at the cost of products quality.

Service: SOV promised to respond to customers products quality or service in 24 hours reported, and solutions shall be provided in 48 hours.

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Material: Steel
Usage: Automation and Control
Structure: General Cylinder
Power: Hydraulic
Standard: Standard
Pressure Direction: Single-acting Cylinder


hydraulic cylinder

How does a hydraulic ram contribute to efficient and powerful force generation?

A hydraulic ram utilizes specific design principles and mechanisms to generate efficient and powerful forces. Here's a detailed explanation:

1. Water Hammer Effect: The hydraulic ram harnesses the water hammer effect to generate powerful forces. When water flows into the ram during the drive phase, it gains velocity and momentum. As the water reaches a certain pressure threshold, the valve mechanism rapidly closes, creating a water hammer effect. This sudden closure of the valve generates a high-pressure pulse that propels a portion of the water to a higher elevation, producing a powerful force.

2. Momentum Transfer: The hydraulic ram efficiently transfers the momentum of flowing water to generate force. The momentum of the moving water is converted into mechanical work as the water hammer effect occurs. By utilizing the kinetic energy of the water, the hydraulic ram maximizes the efficiency of force generation.

3. Energy Recovery: One of the key features of a hydraulic ram is its ability to recover and reuse energy. As the water hammer effect occurs and the high-pressure pulse lifts a portion of the water, the remaining water in the ram's drive pipe decelerates. This deceleration allows the kinetic energy of the water to be converted back into potential energy, which can be used to pump a new cycle of water. This energy recovery mechanism enhances the overall efficiency of the hydraulic ram.

4. Mechanical Advantage: A hydraulic ram incorporates mechanical advantage through its design. The valve mechanism and other components are optimized to multiply the force generated by the water hammer effect. By leveraging mechanical advantage, the hydraulic ram can produce a more powerful force output compared to the input force from the flowing water.

5. Self-Sustaining Operation: A hydraulic ram operates in a self-sustaining manner, requiring minimal external power sources. Once the ram is set up and primed with water, it can continue to operate using the energy of flowing water. This self-sustainability contributes to the efficiency of force generation, as it eliminates the need for continuous external energy input.

6. Simple and Robust Design: The design of a hydraulic ram is relatively simple and robust, enabling efficient force generation. The absence of complex components reduces friction and energy losses. Additionally, the robust design ensures durability and long-term reliability, making hydraulic rams suitable for various applications.

Through the water hammer effect, momentum transfer, energy recovery, mechanical advantage, self-sustaining operation, and a simple yet robust design, a hydraulic ram maximizes the efficiency and power of force generation. These features make hydraulic rams an effective and reliable choice for pumping water and harnessing hydraulic power.

hydraulic cylinder

Can hydraulic rams be used in construction equipment like bulldozers?

Yes, hydraulic rams are commonly used in construction equipment like bulldozers. Here's a detailed explanation:

1. Blade Control: Bulldozers are equipped with large blades mounted at the front, which are used for various tasks such as pushing and leveling soil, debris, or other materials. Hydraulic rams play a crucial role in controlling the movement of these blades. The hydraulic rams are connected to the bulldozer's hydraulic system and enable the operator to adjust the angle, height, and tilt of the blade. By utilizing hydraulic rams, bulldozer operators can precisely control the blade's position and apply the necessary force for efficient earthmoving and grading operations.

2. Ripper Attachment: Bulldozers often have ripper attachments at the rear of the machine. The ripper is used to break up hard or compacted soil, rocks, or pavement surfaces. Hydraulic rams are utilized to control the movement of the ripper attachment. The rams enable the operator to raise, lower, and angle the ripper, allowing for effective penetration and loosening of the ground. Hydraulic rams provide the necessary force and control to handle tough materials and enhance the bulldozer's versatility in various construction applications.

3. Track System: Bulldozers feature a track system for mobility and traction on rough terrain. Hydraulic rams are integral components of the bulldozer's track system, responsible for controlling the movement and tension of the tracks. The rams allow for adjustments in track tension to optimize the grip and stability of the bulldozer when operating on different ground conditions. By utilizing hydraulic rams in the track system, bulldozers can maneuver efficiently and maintain traction even in challenging construction environments.

4. Hydraulic Power: Hydraulic rams in bulldozers are powered by a hydraulic system that consists of a hydraulic pump, valves, and actuators. The hydraulic system provides the necessary power and control to operate the hydraulic rams effectively. Bulldozers typically have robust hydraulic systems capable of generating high forces, allowing the rams to exert significant pushing or lifting capabilities. The hydraulic power provided by the system enables bulldozers to perform heavy-duty construction tasks with precision and efficiency.

5. Operator Control: Bulldozer operators have control over the hydraulic rams through hydraulic control levers or joysticks in the operator cabin. These controls allow operators to manipulate the position, speed, and force of the hydraulic rams, providing precise control over the blade and ripper attachments. The intuitive and responsive nature of hydraulic controls enhances the operator's ability to perform tasks accurately and efficiently.

In summary, hydraulic rams are extensively used in construction equipment like bulldozers to control the blade and ripper attachments, manage the track system, provide hydraulic power, and offer operator control. The integration of hydraulic rams enhances the performance, versatility, and productivity of bulldozers in various construction and earthmoving applications.

hydraulic cylinder

What industries commonly use hydraulic rams in their operations?

Hydraulic rams find applications in various industries where the pumping of water or hydraulic power is required. Here's a detailed explanation of the industries that commonly use hydraulic rams:

1. Agriculture: The agricultural sector extensively uses hydraulic rams for irrigation purposes. Hydraulic rams are employed in farms to pump water from natural sources, such as rivers or streams, to higher elevations for irrigation of crops. They provide a cost-effective and sustainable solution for water distribution in agricultural fields.

2. Water and Wastewater Management: Hydraulic rams are utilized in water and wastewater management industries. They are employed in water treatment plants to pump water through different treatment stages, facilitating the movement of water and treatment processes. Hydraulic rams are also used in wastewater management systems to pump wastewater to higher elevations for further treatment or disposal.

3. Construction: The construction industry utilizes hydraulic rams for various applications. They are commonly used in dewatering operations, where hydraulic rams help remove water from construction sites or excavations. Hydraulic rams also find applications in pile driving, where they provide the necessary force to drive piles into the ground.

4. Mining: Hydraulic rams are employed in the mining industry for dewatering purposes. They are used to remove water from mines or excavations, ensuring a safe and dry working environment. Hydraulic rams play a crucial role in preventing flooding and maintaining productivity in mining operations.

5. Environmental and Aquaculture: Hydraulic rams have applications in environmental and aquaculture industries. They are utilized in fish passage systems to help fish migrate upstream by creating water flows and elevations. Hydraulic rams are also employed in water circulation systems in aquaculture facilities, ensuring proper oxygenation and water quality for aquatic organisms.

6. Renewable Energy: Hydraulic rams play a role in the renewable energy sector, particularly in micro-hydropower systems. They are used to convert the energy of flowing water into mechanical power to drive turbines or generators, producing electricity in off-grid locations or areas with access to a reliable water source.

7. Rural and Remote Areas: Hydraulic rams are commonly used in rural and remote areas where access to electricity or conventional pumping systems is limited. They provide a sustainable and efficient solution for water supply, irrigation, and other pumping needs in such locations.

These industries demonstrate the versatility and broad application of hydraulic rams in various fields, where they serve as an effective and reliable method for pumping water and harnessing hydraulic power.

China Good quality Rch-206 Single Acting Hollow Plunger Hydraulic RAM   vacuum pump ac system	China Good quality Rch-206 Single Acting Hollow Plunger Hydraulic RAM   vacuum pump ac system
editor by CX 2024-02-05