Product Description
Model
Hyco type 4 stages single acting telescopic cylinder
Item no.: 45711-934-280T
Introduction
Hyco is 1 of the most popular telescopic cylinders in the United States. We specialize in the manufacturing and sales of dump truck hoist cylinders – end dump cylinders, and we have 1,000 cylinders in stock. We are constantly updating and maintaining HYCO cylinder inventory.
| Working temperature | -40°C ~ 80°C |
| Max. duration of extension | 0.5 hour |
| Color | RAL9005,Customize |
| Material | CK45,ST52,ST52-3,27SiMn,Customize |
| Seal kit | SKF, Trelleborg, Halite, Chesterton, NOK, Kayaba |
| Piston rod | Hard chromed |
| Packaging | Plywood case |
| Warranty | 12 months |
| Payment | T/T |
Features
U-cup design
1-Lower running friction for smooth, fast operation
2-Lower friction means lower break-away pressure
3-No mis-staging
4-No seal adjustments required
5-No compression set like standard V-packing
6-Dry operation means no oil build up on stages
7-Longer seal life than V-packing
8-Better temperature range
9-Dual bearings provide more bearing surface area for greater support
Alloy tubing material
1-DIN ST 52.3 vs. 1026 tubing means higher column strength
2-Increased impact resistance
3-Increased scratch resistance
4-All stages are skive bored to meet exacting clearances
5-Closer piston tolerances
6-Compare to the competitions unfinished raw tubing
7-Dual internal piston retaining rings
Specification
| SKU | 45711-934-280T |
| Function | Platform, lift, dumper |
| Base end mount type | Trunnion |
| Base mount width | 50″ |
| Base pin size | 1.75″ |
| Closed | 91.50″ |
| Extend port/ Plunger | 1.25″ NPT |
| Open extended length | 371.50″ |
| Rod end mount type | Spherical bearing |
| Rod mount width | 2.50″ |
| Rod pin size | 2.50″ |
| Tele largest stage OD | 9″ |
| Telescopic number of stages | 4 |
| Telescopic stroke | 280″ |
| Trunnion closed | 20.00 |
| Trunnion open | 300.00 |
| Trunnion pin dia | 3.50 |
| Trunnion pin length | 2.00 |
| Trunnion width | 17.00 |
Pictures
Company introduction
HangZhou CHINAMFG is a comprehensive manufacturing enterprise engaged in hydraulic cylinders, excavator attachment, metal casting, hydraulic components with certification approval to meet custom or OEM requirements.
ROCA owns factories that offer customers effective-cost products with quality assurance. With its professional and experienced R&D team, CHINAMFG Hydraulic devotes itself to research and development to optimize products applied in construction, mining, waster management, forestry, agriculture, etc.
Hydraulic cylinders are the most effective and efficient method of pushing, pulling, lifting, and lowering.
Nowadays hydraulic cylinders play an essential role in daily application and industry:
√ Mining
√ Earthmoving & Construction
√ Agriculture &Forestry
√Waste Management & Material Handing
√Ship crane & offshore
Select the right cylinders for an application is critical in obtaining maximum performance and reliability.
CHINAMFG team takes all your concerns into consideration to suit your hydraulic cylinder requirements.
Together, we work out the best design solution for your application.
/* March 10, 2571 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Certification: | GS, RoHS, CE, ISO9001 |
|---|---|
| Pressure: | Medium Pressure |
| Work Temperature: | Low Temperature |
| Customization: |
Available
|
|
|---|
.shipping-cost-tm .tm-status-off{background: none;padding:0;color: #1470cc}
|
Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
|---|
| Payment Method: |
|
|---|---|
|
Initial Payment Full Payment |
| Currency: | US$ |
|---|
| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
|---|

How does a single-acting hydraulic cylinder handle variations in environmental conditions?
A single-acting hydraulic cylinder is designed to handle variations in environmental conditions effectively. Here’s a detailed explanation:
1. Sealing Mechanisms: Single-acting hydraulic cylinders incorporate sealing mechanisms to prevent the ingress of contaminants and protect the internal components from environmental factors. The primary sealing component is typically a piston seal or rod seal, which forms a barrier between the hydraulic fluid and the external environment. These seals are designed to withstand temperature variations, moisture, dust, dirt, and other contaminants that may be present in the surrounding environment.
2. Material Selection: The materials used in the construction of single-acting hydraulic cylinders are carefully chosen to withstand different environmental conditions. Cylinder components are often made of materials such as steel, stainless steel, or corrosion-resistant alloys that offer durability and resistance to rust, corrosion, and chemical exposure. This ensures that the cylinder can operate reliably even in harsh environments, such as marine, offshore, or industrial settings.
3. Temperature Compensation: Single-acting hydraulic cylinders can handle variations in temperature through temperature compensation measures. Hydraulic fluids exhibit changes in viscosity with temperature fluctuations. To maintain consistent performance, the hydraulic system may incorporate temperature compensation mechanisms, such as adjusting the pressure or flow rate, to compensate for the effects of temperature on the fluid’s properties. This helps ensure that the cylinder operates effectively across a range of temperature conditions.
4. Lubrication and Maintenance: Proper lubrication is essential for the smooth operation of a single-acting hydraulic cylinder, especially in varying environmental conditions. Lubricants are used to reduce friction, protect seals, and ensure optimal performance. The choice of lubricant depends on the operating temperature range and the specific requirements of the cylinder. Regular maintenance, including lubrication inspections and seal replacements, helps maintain the cylinder’s performance and extends its service life.
5. Environmental Protection: In certain applications or environments where the hydraulic cylinder may be exposed to extreme conditions, additional measures may be taken to enhance its protection. This can include the use of protective covers, boots, or bellows to shield the cylinder from debris, moisture, or extreme temperatures. These protective measures help prolong the cylinder’s lifespan and maintain its functionality under challenging environmental conditions.
6. Compliance with Standards: Single-acting hydraulic cylinders are often designed and manufactured in compliance with industry standards and regulations. These standards define minimum requirements for factors such as performance, safety, and environmental conditions. By adhering to these standards, hydraulic cylinders are engineered to handle variations in environmental conditions while ensuring safe and reliable operation.
7. Application-Specific Considerations: Depending on the specific application and environmental conditions, additional features or modifications may be incorporated into the design of single-acting hydraulic cylinders. For example, in marine or offshore applications, cylinders may be equipped with corrosion-resistant coatings or special seals to withstand saltwater exposure. In high-temperature environments, heat-resistant materials or cooling systems may be employed.
In summary, single-acting hydraulic cylinders handle variations in environmental conditions through sealing mechanisms, appropriate material selection, temperature compensation measures, lubrication and maintenance practices, environmental protection measures, compliance with standards, and application-specific considerations. These design considerations and protective measures ensure the cylinder’s performance, longevity, and reliability even in challenging environmental conditions.

Can single-acting hydraulic cylinders be used in hydraulic presses?
Yes, single-acting hydraulic cylinders can be used in hydraulic presses. Here’s a detailed explanation:
Hydraulic presses are widely used in various industries for applications such as stamping, forming, punching, and molding. They utilize hydraulic cylinders to generate and control the force required for these operations. Single-acting hydraulic cylinders are well-suited for integration into hydraulic presses due to their ability to provide force in one direction. Here are some key points on using single-acting hydraulic cylinders in hydraulic presses:
1. Force Generation: Single-acting hydraulic cylinders are capable of generating substantial force when hydraulic pressure is applied to the piston for extension. This force is utilized in hydraulic presses to exert pressure on the workpiece or tooling for tasks such as bending, shearing, or compressing. The hydraulic cylinder converts the hydraulic energy into linear force, allowing the press to perform a wide range of applications.
2. Press Cycle Control: Hydraulic presses require precise control over the force and stroke during operation. Single-acting hydraulic cylinders can be actuated through control valves to control the extension and retraction of the piston. The valves enable the operator to regulate the flow of hydraulic fluid, thus controlling the force applied by the cylinder. This control allows for accurate and repeatable press cycles, ensuring consistent results and efficient production.
3. Safety Features: Hydraulic presses often incorporate safety features to protect operators and prevent damage to the press or tooling. Single-acting hydraulic cylinders can be integrated into these safety systems. For example, pressure relief valves can be installed to limit the maximum force exerted by the hydraulic cylinder, preventing overload situations. Additionally, emergency stop buttons, safety interlocks, and guarding systems work in conjunction with the hydraulic cylinder to ensure safe operation of the hydraulic press.
4. Durability and Reliability: Single-acting hydraulic cylinders are designed to withstand high pressures and heavy loads, making them suitable for the demanding conditions of hydraulic presses. They are constructed using robust materials and undergo rigorous testing to ensure durability and reliability. The cylinders can endure frequent use and provide consistent force application throughout their operational lifespan, contributing to the overall performance and productivity of the hydraulic press.
5. Customization Options: Single-acting hydraulic cylinders offer customization options to suit specific requirements in hydraulic presses. Parameters such as bore size, stroke length, and mounting configurations can be tailored to match the press’s design and application. This flexibility allows for optimal integration and performance in hydraulic press systems.
It is important to consider the force capacity, stroke length, and other technical specifications of the single-acting hydraulic cylinder to ensure compatibility with the specific hydraulic press application.
In summary, single-acting hydraulic cylinders can be effectively used in hydraulic presses for force generation, press cycle control, safety, and durability. Their ability to provide controlled linear force makes them suitable for a wide range of pressing applications across various industries.

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.


editor by CX 2023-12-25