Product Description
Types of gas springs
1. Support gas spring
Also called free-type gas spring. Support rod. It is the most widely used gas spring. It mainly plays a supporting role, with only the shortest and longest positions, and cannot stop by itself during the stroke. It is most widely used in mechanical equipment, furniture and other fields.
2. Lockable(Controllable) gas spring
The controllable gas spring can be locked at any position of the entire stroke, mainly through the controller (handle or cable) to achieve the effect, but also through the expansion and contraction of the piston rod. When the controller is adjusted to stop at the desired position, the valve will be closed and the live cooling rod will be locked in the required position. When locking occurs, locking can be achieved. However, if the locking force is exceeded, the locking function will no longer be effective.
3. Damper
Damper features reduce inertia and reduce speed by changing size. Its resistance changes with the speed of operation. The speed of the connected mechanism can be significantly damped.
4. Tensile gas spring
Also known as a traction gas spring, it uses an internal piston rod to achieve basic positioning. It is a special gas spring. The supporting gas spring is in the longest position when it is in a free state. After receiving external force, it moves from the longest position to the shortest position, while the free state of the traction gas spring is at The shortest position, running from the shortest to the longest when being pulled. Traction gas springs also have corresponding free type, self-locking type and so on.
YQ series air bombs are widely used in automobile, household, computer, fitness equipment, textile, printing, food, tobacco, woodworking and other machinery, and can play the role of lifting, suspending, closing and so on.
The product structure is reasonable, and the installation and maintenance are convenient. No external power is needed when working, saving energy. The lifting force is basically constant throughout the working stroke, and the end of the stroke has a buffer mechanism to avoid damage to components. The lifting member can be stopped in any position.
| MODEL | d(mm) | D(mm) | L(mm) | S(mm) | Force(kgf) |
| YQ13 | Φ6 | Φ15 | 100-550 | 50-200 | 5-35 |
| YQ16 | Φ8 | Φ18 | 210-580 | 50-220 | 15-50 |
| YQ20A | Φ10 | Φ22 | 300-700 | 100-300 | 30-80 |
| YQ20B | Φ12 | Φ22 | 400-700 | 100-300 | 40-100 |
| YQ25A | Φ12 | Φ27 | 600-800 | 220-350 | 60-130 |
| YQ25B | Φ14 | Φ28 | 600-900 | 220-350 | 100-300 |
| YQ25C | Φ16 | Φ28 | 600-1200 | 220-900 | 100-300 |
sample.the length, stroke,pressure can be customized
Gas spring installation location selection
There are 2 optional installation styles:
1. AO is less than the length of OB
2. OB is less than the length of AO
• Calculate the approximate stroke of the gas spring used when setting points A and B first:
The AB length after opening the lid minus the AB length after closing is equal to the required air bomb stroke;
Re-calculate whether the selected gas bomb praise is reasonable:
Gas spring stroke x2+80mm=AB length after opening.
Note: If the result obtained is greater than the length of AB, then it is necessary to move point A to point 0 or point B to move to point O to increase the length of point AB, that is, increase the length of the gas spring.
YK series gas springs are suitable for various occasions where the angle and height need t be adjusted. The piston rod can be stopped at any position under human manipulation. YK series gas springs operate flexibly, work stably and reliably. Can be designed and manufactured according to user requirements. For matters needing attention, please refer to the YQ series gas spring.
| MODEL | D(mm) | d1(mm) | L(mm) | S(mm) | Thread diameter | Force(kgf) |
| Lockable YK | Φ22 | Φ10 | 225 | 60 | M10*1 | 300-700 |
| 210 | 50 | |||||
| 200 | 40 | |||||
| 130 | 30 | |||||
| Φ28 | 760 | 280 | 300-900 | |||
| 175 | 50 | |||||
| 170 | 42 | |||||
| 155 | 40 | |||||
| 128 | 28 |
This product is divided into pure oil, pure gas, oil and gas mixing, oil and gas separation and other construction machinery shock absorbers. This product is widely used in the shock absorption of engineering vehicle seats, which can effectively eliminate the vibration caused by the mechanical spring under the action of gravity. The aftershocks make the driver and passengers feel smooth and comfortable.
The oil-gas hybrid shock absorber has a good gas buffering effect and is the first choice shock absorber for modern engineering vehicle seats.
1. Samples can be offered to test before placing orders.
2. Low MOQ. Small orders are accepted.
3. OEM & ODM. Customization service is offered, including logo, laser marking.
4. Outstanding R&D ability,including product development and mould development.
5. Great pre-sales and after sales service.
HangZhou Manjia Youchuang Household Products Co., Ltd. is a professional dampers and gas springs manufacturer which collects research, design, production and sale.
Our technical backbone has been engaged in the R&D and production of dampers for more than 22 years experience. The professional and well trained production department and QC staff could assure the perfect performance of our Dampers products. For the quality assurance rate of over 99.98%, and the stability of delivery time rate more than 99.96%.
Q1. Can I have a sample for testing?
A: Yes, samples are in stock, we will return sample fee back to you once you make a bulk order from us.
Q2. What about the lead time?
A: Sample needs 1-3 days, mass production time needs around 15 days for order quantity more than 10,000 pieces.
Q3. What is your MOQ?
A: Under normal circumstances, the order quantity is 1000 pieces. If you need less than 1,000 pieces, please contact customer service.
Q4. How do you ship the goods and how long does it take to arrive?
A: We usually ship by DHL, UPS, FedEx or TNT. It usually takes 3-5 days to arrive. Shipping time depend on the shipping way you choose.
Q5. Can I print my logo on the product?
A: Yes. Please inform us formally before our production and confirm the design firstly based on our sample. Customized design is available. OEM and ODM are offered.
Q6. Do you offer guarantee for the products?
A: Yes, we offer 1 year warranty to our products.
Q7: How to deal with the faulty?
A: Our products are produced in strict quality control system and the defective rate will be less than 0.2%.During the guarantee period, we will send new dampers with new order for small quantity. For defective batch products, we will repair them and resend them to you or we can discuss the solution.
| Function: | Pressed, Phonation, Buffer, Drive, Restoration, Measurement |
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| Material: | Alloy |
| Load Type: | Compression |
| Samples: |
US$ 15/Piece
1 Piece(Min.Order) | Order Sample |
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| Customization: |
Available
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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Can lift cylinders be used in dock levelers and loading ramps?
Yes, lift cylinders can be used in dock levelers and loading ramps. Here’s an explanation of their utilization in these applications:
Dock levelers and loading ramps are essential equipment in logistics and transportation facilities, allowing for efficient loading and unloading of goods between trucks and loading docks. Lift cylinders play a crucial role in these systems by providing the necessary lifting and positioning capabilities.
In dock levelers, lift cylinders are employed to bridge the gap between the loading dock and the truck bed, ensuring a smooth transition for material handling equipment such as forklifts or pallet jacks. These cylinders are typically integrated into the mechanical or hydraulic systems of the dock leveler, allowing for controlled vertical movement. By extending or retracting the lift cylinders, the dock leveler can be adjusted to match the height of the truck bed, enabling safe and efficient loading or unloading of cargo.
Loading ramps, also known as mobile yard ramps or portable ramps, are used in situations where a permanent loading dock is not available or when additional flexibility is required. Lift cylinders are utilized in loading ramps to provide the means for height adjustment and inclination control. By extending or retracting the lift cylinders, the ramp can be raised or lowered to align with the truck bed height, facilitating the movement of goods between the ramp and the truck.
The use of lift cylinders in dock levelers and loading ramps ensures precise and controlled positioning during the loading and unloading process. Operators can adjust the lift cylinders to match the specific height requirements, allowing for smooth and safe transfer of materials without causing damage to the goods or the equipment.
Lift cylinders used in dock levelers and loading ramps are designed to withstand heavy loads and endure frequent use. They are constructed with robust materials and incorporate features such as seals and bearings to ensure durability and reliability in demanding industrial environments.
Furthermore, lift cylinders in dock levelers and loading ramps may incorporate safety features such as automatic descent control or velocity fuses. These safety mechanisms help prevent sudden drops or uncontrolled movements in the event of a hydraulic system failure, enhancing the overall safety of the loading and unloading operations.
In summary, lift cylinders are commonly utilized in dock levelers and loading ramps to provide reliable and controlled lifting and positioning capabilities. Their ability to handle heavy loads, facilitate height adjustment, and incorporate safety features makes them integral components in these applications, contributing to efficient and safe material handling operations.

Can lift cylinders be used in hydraulic presses for material forming?
Yes, lift cylinders can be used in hydraulic presses for material forming. Hydraulic presses are widely employed in manufacturing processes that involve shaping, bending, or compressing materials such as metal, plastic, or rubber.
Lift cylinders, also known as hydraulic cylinders, play a crucial role in hydraulic presses by providing the force required for material forming. Here’s how lift cylinders are utilized in this context:
- Force Generation: Lift cylinders are responsible for generating the force necessary to exert pressure on the material being formed. They convert hydraulic energy into mechanical force, enabling the press to shape or mold the material according to the desired specifications.
- Stroke Length: Lift cylinders have an adjustable stroke length, allowing them to accommodate different material forming requirements. By modifying the stroke length, the press can apply varying degrees of force and control to achieve the desired shape and dimensions of the formed material.
- Control and Precision: Lift cylinders offer precise control over the force and movement in hydraulic presses. The hydraulic system controlling the cylinders allows for accurate adjustment and regulation of the pressure, speed, and timing of the forming process. This control ensures consistent and precise material forming results.
- Die Mounting: Lift cylinders are employed in the mounting of dies or tooling within the hydraulic press. The cylinders provide the necessary lifting and lowering action to secure the dies in place and facilitate their proper alignment with the material being formed. This ensures accurate and repeatable forming operations.
- Safety Features: Hydraulic presses incorporating lift cylinders often include safety features such as pressure relief valves, emergency stop controls, and overload protection. These features help safeguard operators and prevent damage to the press or the formed material.
The use of lift cylinders in hydraulic presses for material forming offers several advantages. They provide the high force capability required for effective shaping and forming of various materials. The adjustable stroke length and precise control allow for versatility and customization, accommodating different forming needs. The integration of safety features ensures safe operation and protects both the equipment and personnel.
In conclusion, lift cylinders are suitable for use in hydraulic presses for material forming. Their ability to generate force, adjust stroke length, and provide precise control makes them essential components in achieving accurate, efficient, and reliable material forming processes.

Can lift cylinders be used for both lifting and lowering applications?
Yes, lift cylinders are designed to be versatile and can be used for both lifting and lowering applications. Here’s an explanation of how lift cylinders are utilized for both lifting and lowering:
Lift cylinders are a type of hydraulic cylinder that converts fluid pressure into linear motion. They consist of a cylinder barrel, a piston, a rod, and seals. When hydraulic fluid is pressurized and directed into the cylinder, it exerts force on the piston, causing it to move in a linear direction.
Lifting Applications:
In lifting applications, the lift cylinder extends to raise or lift a load. As hydraulic fluid is pumped into the cylinder, the pressure increases, pushing the piston and rod outward. This extension of the cylinder generates the necessary force to lift the load. The lifting capacity of the cylinder depends on its design, including the diameter of the piston and the pressure rating of the system.
Lowering Applications:
For lowering applications, the lift cylinder retracts to lower the load. By controlling the flow of hydraulic fluid out of the cylinder, the pressure is reduced, allowing the weight of the load to push the piston and rod back into the cylinder. This controlled retraction enables smooth and controlled lowering of the load.
Lift cylinders are commonly used in various industries and applications where controlled vertical motion is required. Examples include lifting platforms, scissor lifts, dump trucks, hydraulic elevators, and material handling equipment. The ability to perform both lifting and lowering actions makes lift cylinders highly versatile and adaptable to different operational needs.
In summary, lift cylinders can be utilized for both lifting and lowering applications. By controlling the flow of hydraulic fluid, these cylinders can extend to lift a load and retract to lower it, offering flexibility and efficiency in a wide range of industries and equipment.


editor by CX 2023-11-21