Product Description

300 ton 400 ton 500 ton 650 ton Stressing Hydraulic Ram for Prestressing PC Strands

1. It is suitable for the tension of group anchors with 1860-2000 sizes, Φ15.24, Φ12.7 strands.
2. In some certain circumstance it can be used in the working of pushing, jacking and transforming and so on.
3. Easy to operate and used widely.
Notice: according to users’ requirement, YDC prestressing jack can be configured
It is matched with prestressed anchorage widely used in the construction of bridge and buildings, railway and subway,
 water conservancy and hydropower engineering.
YDC Feed-through jacks are the new designed products in our company, are the upgrades of the primary jacks.
1. Using new seals, to synchronous strengthen the seal-ability under great pressure.
2. Using special alloy steel with heat treatment process, reducing the cylinder’s expansion ratio in the tensioning
process. So the life of seals and sealing performance can be improved about 20%.
3. In the tensioning the operating process, jacks is easily damaged under overpressure because of the jack-based
pullback cylinder, so we added the overpressure valve on the jacks to pressure production. Meanwhile we improved
the original of commonly used structure by wire disc and flanged disc, to make the bearing capacity for oil pressure
strengthen. So enormously reduce the possibility of mechanical damage due to improper operation. 
In the word, the YDC series feed-through jacks’ performance is improved, and widely used in pre-stressing and post
stressing construction.

Technical parameter:

Nominal Tension Rated Oil Pressure Pulling Stroke Area of Tensioning Piston Center hole Diameter Minimum Working Space The Reserved Length of Strand Over dimension
KN Mpa mm mm² mm L(mm) E(mm) K(mm) out diameter
YDC60 60 54 150 1119 30 874 59.5 387 70 287
YDC130 130 50 160 2592 30 838 77 395 90 295
YDC270 270 61 185 4418 30 888 89 415 105 315
YDC650 650 50 150 13018 40 860 145 380 170 288
YDC1100 1100 51 200 19792 80 1210 184 680 217 330
YDC1500 1500 50 200 35717 90 1210 230 680 270 330
YDC2000 2000 51 200 39820 110 1296 272 723 320 360
YDC2500 2500 52 200 48381 127 1306 298 728 350 360
YDC3000 3000 52 200 57727 145 1322 336 736 375 380
YDC3500 3500 48 200 73435 162 1322 336 745 415 395
YDC4000 4000 51 200 79168 162 1324 374 745 435 395
YDC4600 4600 51 200 91571 180 1350 420 750 470 410


Type: Hydraulic Jack
Structure: Hydraulic Jack
Capacity (Load): 110-1200 Tons
Power Source: Hydraulic
Max Height: >400mm
Certification: CE, ISO 9001:2008, SGS


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 OEM 300 Ton 400 Ton 500 Ton 650 Ton Stressing Hydraulic RAM for Prestressing PC Strands   with Hot selling	China OEM 300 Ton 400 Ton 500 Ton 650 Ton Stressing Hydraulic RAM for Prestressing PC Strands   with Hot selling
editor by CX 2023-11-21