Suspa hydraulic gas spring
Gas springs Liftline
The gas springs, also called gas pressure springs, gas dampers or gas pressure dampers, will solve your individual requirements for opening, closing, tilting and damping flaps, tables, seats or loungers thanks to our decades of experience. They take care of the controlled movement sequence and offer the following advantages:
-Simple installation
-Compact design
-Integrated damping
-Definable spring characteristic and extension speed
Standard product range
-Standard product range of gas springs includes five different basic types.
| TYPE | Ø tube (mm) | Ø piston rod (mm) | max. stroke (mm) | Extension force (N) |
| 16-1 | 15 | 6 | 150 | 60 - 350 |
| 16-2 | 19 | 8 | 250 | 60 - 600 |
| 16-3 | 22 | 8 | 285 | 85 - 535 |
| 16-4 | 22 | 10 | 395 | 100 - 1,000 |
| 16-6 | 28 | 14 | 500 | 200 - 2,000 |
Applications of Gas Springs
|
Industry |
Examples | Primary Function |
| Automotive | Car trunks, hoods, tailgates | Lift assistance, damping |
| Furniture | Office chairs, recliners, folding tables | Adjustability, smooth motion |
| Industrial | Machinery guards, workstations | Safety, load support |
| Medical | Hospital beds, dental chairs | Precise positioning |
| Aerospace | Aircraft seating, cargo doors | Space-saving, reliability |
Functionality
What is a gas spring? How is a gas spring built, how does it work and how do you find the right gas spring for your purpose? We will briefly present the most important functions here.
Gas springs are hydropneumatic adjustment elements.
Gas springs consist of a pressure tube and a piston rod with a piston unit. Connection parts to the pressure tube and the piston rod allow for the suitable connection for your application. The core of the Suspa gas spring is the special sealing and guiding system. This ensures the hermetic sealing of the interior with low friction, even under extreme environmental conditions.
The gas spring is filled with non-toxic nitrogen under high pressure. This produces a charging pressure that acts on the cross-sectional area of the piston rod. This generates the extension force. If the extension force of the gas spring is higher than the force of the counterweight, the piston rod extends. If the extension force is lower, then the piston rod retracts. The flow cross-section in the damping system determines how quickly the extension occurs. In addition to nitrogen, there is a defined amount of oil in the interior for lubrication and end position damping. The suspension comfort of a pneumatic spring can be determined as needed and for the respective task.
As can be seen from the graphic, the spring characteristic represents the force progression of the gas spring over the stroke, from the extended to the inserted state and back. In the process, the spring characteristic value represents the force ratio F2/F1. When designing a pneumatic spring, the force F1 is the most important criterion in addition to the dimensions. The force F1 is measured 5 mm before the end of the extension movement, thus defining the value of the spring force. The force FR resulting from the friction is created between the force lines in the insertion and extension direction. The extension speed is divided into two types of damping: With the standard gas spring, the extension speed is controlled via a pneumatic and hydraulic range. When installing the gas spring with piston rod facing down, the piston first moves through the gas-filled part (pneumatic area), then through the oil-filled part of the pressure pipe (hydraulic area). The piston rod is braked by the oil.
If desired, the damping can also occur dynamically. For this purpose, a longitudinal groove is provided in the pipe, which allows for a positionally-independent damping of the gas spring
Gas springs with hydraulic damping can be designed as special versions according to the following principles:
›extension-damped gas spring
›insertion-damped gas spring
›insertion and extension-damped gas spring
›Gas spring without damping
Gas spring Liftline is individually designed depending on the installation situation. For us, the focus is on the function of the entire application as well as the individual coordination of the kinematics and the spring characteristics in accordance with the requirements profile. Gas springs are tested in our technical department on systems, test equipment and trial facilities:
›Linear test benches
›Folding test benches
›Climate test chamber
›Hydropulser
›Tailgate simulation
›Speed / acceleration measurement
›Laboratory for metallurgy and corrosion tests
The following conditions are generally to be observed when selecting the suitable Suspa gas spring:
›The ratio of the diameter of the piston rod to the pipe determines the force progression of the spring characteristic. Flat characteristic curves require a small piston rod diameter and a large pipe cross-section.
›A longer stroke means smaller required forces of the gas spring and in this respect smaller reaction forces at the pivotal points.
›A larger piston rod diameter should be chosen for extremely long strokes paired with high extension forces. This solution offers a higher level of safety against the gas spring buckling. Correspondingly, the effect of transverse forces acting on the gas springs should be avoided in general.
Gas springs correspond to the highest requirements in a variety of application areas due to their basic design and their reliability. However, it is up to the user to check the suitability for the respective application case. We are happy to help you select the appropriate SUSPA® gas spring and install it properly.
| Type | ∅ Tube(mm) | ∅ Piston rod(mm) | Stroke(mm) | Extension force* F1 (N) | Color tube | Color piston rod | Type of locking |
| EL1 | 22 | 10 | 20 - 250 | 200 - 800 | black | Tenifer | elastic |
| EL2 | 28 | 10 | 20 - 250 | 200 - 1,000 | black | Tenifer | elastic |
| HY1 | 22 | 10 | 20 - 250 | 200 - 800 | black | Tenifer | rigid |
| HY3 | 28 | 10 | 20 - 250 | 200 - 1,000 | black | Tenifer | rigid |
Applications of Lockable Gas Springs
| Industry | Examples | Why Lockable? |
| Office Furniture | Adjustable desks, chairs | Secure height settings |
| Medical Equipment | Hospital beds, surgical tables | Safe patient positioning |
| Automotive | Truck tailgates, RV steps | Prevent accidental closing |
| Industrial | Workstations, machinery guards | Lock open for maintenance |
| Home & Storage | Murphy beds, overhead cabinets | Space-saving safety |
Functionality
What is a locking gas spring? How is a locking gas spring built and what forces act in the pulling and pushing direction when locked? We present the most important characteristics of the locking gas springs to you here:
Locking gas springs are hydropneumatic adjustment elements.
They consist of a pressure pipe and a piston rod with a piston as well as a valve that is actuated via the release pin.
When the valve is opened, the extension force aids the user in adjusting his or her application in that the gas spring bears a large part of the weight force. When the valve is closed, the gas spring locks, thus locking the application in the desired position. Depending on the design, the locking can be elastic or rigid. With the help of the elastic locking, the lockable pneumatic spring responds in a spring-loaded manner in the push and pull direction, since this is only filled with nitrogen.
With rigid locking, the locking gas spring reacts rigidly in the push and pull direction. This is achieved by a defined oil chamber in which the piston moves. The locking force in the pushing or pulling direction is maximized depending on the arrangement of the chamber.
Functionality
What is a hydraulic damper? How is the damper built and what forces are acting? We present the most important characteristics of the hydraulic dampers to you here.
Hydraulic dampers are damping elements that convert the kinetic energy of moving parts into thermal energy. This avoids hard impacts or excessive vibration amplitudes.
Hydraulic dampers consist of a pressure pipe, a piston rod with a special piston system and the damping medium of oil, which is why they are also called hydraulic dampers. Within the oil-filled pressure pipe is the piston rod with the special sealing and guiding package, which hermetically seals the interior of the hydraulic damper to the atmosphere - even under extreme environmental influences.
When the piston rod is moved, the damping medium of oil is pressed through the bores in the piston system. The damping force results from the resistance of the oil when flowing through the piston system. Due to the internal design of the piston system, the pull and push direction can be set independently of each other. The damping forces are dependent on the piston speed.
Adjustable linear, progressive or degreessive characteristic curves allow for the application-oriented design of the hydraulic damper. All hydraulic dampers developed by Suspa are designed for the respective product application so that an optimal movement sequence or optimal vibration behavior is achieved.
Hydraulic dampers Softline
Tieying hydraulic dampers, also called shock absorbers, gas spring damper or vibration dampers, are designed for the respective product application so that an optimal movement sequence or optimal vibration behavior is achieved. We use our decades of experience in the field of damping technology to solve your individual requirements for damping vibrations and impacts.
Hydraulic dampers applications:
| Industry | Definition | Our products |
| Automotive | Our products are used in many functions in the car to aid with opening and lowering the tailgate, to adjust the seat position and especially to provide protection in the event of accidents | INTERIOR-Gas springs (Liftline) -Hydraulic dampers (Softline) -Steering column dampers -Other adjustment systems (e.g. seat adjustments)BODY-Crash Management Systems -Rear spoiler drivesConvertible -Other adjustment systems (closing systems for convertible tops)Doors And Flaps -Gas springs (Liftline) -Other adjustment systems (driven flaps and doors) -Automobile dampers |
| Furniture | Our gas springs (lockable and non-lockable gas springs), dampers and height adjustment systems for furniture are specially tailored to the requirements of the furniture industry and are used wherever easy and convenient opening, closing and adjusting are essential. Our high-quality products can be found in the kitchen, living areas and at work. | Kitchen Area -Furniture gas springs -Standard gas spring or soft-stop pneumatic springs -Positioning gas springs -Lock with TouchLift -Furniture dampers -Pneumatic height adjustment systems (VariStand and VariBase)Living Area -Furniture gas spring -Furniture dampers -Gas springs (Liftline) -Gas springs for opening and closing of beds with storage space (bed base) -Lockable gas springs (Lockline) -Pneumatic height adjustment systems (VariStand and VariBase)Workplace -Pneumatic height adjustment systems (VariStand and VariBase) -Hydraulic height adjustment systems (Movotec) -Gas springs and other products |
| Industrial | Using gas springs (lockable and non-lockable) and hydraulic dampers in the industrial sector make it easy and convenient to open and close protective covers, maintenance flaps or other flaps. Gas springs and dampers ensure the comfort and safety of the user. Our height adjustment systems convert workbenches and assembly tables into ergonomic workplaces. Machinery systems and production lines can be equipped for high loads with our adjustment systems. | Gas springs (Liftline) Lockable gas springs (Lockline) Hydraulic dampers (Softline) Friction Damper Hydraulic height adjustment systems (Movotec) Electromechanical height adjustment systems (SMS) Pneumatic height adjustment systems (VariStand and VariBase) |
| Medical | Our gas springs, dampers and adjustment systems increase the safety and comfort of patients and nursing staff. In hospital beds, side tables, treatment tables or fitness equipment, our products and systems offer diverse ergonomic adjustment options. Gas springs, dampers and adjustment systems are characterized by simple installation. They are user-friendly and maintenance-free. | Beds and loungers -Gas springs (Liftline) -Lockable gas springs (Lockline) -Hydraulic dampers (Softline) -Hydraulic height adjustment systems (Movotec) -Electromechanical height adjustment systems (SMS) Wheelchairs -Gas springs (Liftline) -Lockable gas springs (Lockline) -Hydraulic dampers (Softline) -Comfort armchairs Gas springs (Liftline) -Lockable gas springs (Lockline) Side tables and ward trolleys -Pneumatic height adjustment systems (VariStand and VariBase) |
| Utility vehicles | Demanding requirements for lifting, lowering, tilting and damping in utility vehicles are solved by using gas springs (lockable and non-lockable) as well as dampers or by using our height adjustment systems. They are used in a wide variety of areas and facilitate the opening and closing of different flaps or the adjustment of installed components. Driver seats are cushioned against impacts by our dampers and can be conveniently adjusted with the help of our gas springs. | Buses Trucks Rail Vehicles Mobile home/camper Lift truck/forklift Agriculture machines Ships |
