Gas Spring Manufacturers and Suppliers

IQS Directory provides a comprehensive list of gas spring manufacturers and suppliers. Use our website to review and source top gas spring manufacturers with roll over ads and detailed product descriptions. Find gas spring companies that can design, engineer, and manufacture gas springs to your companies specifications. Then contact the gas spring companies through our quick and easy request for quote form. Website links, company profile, locations, phone, product videos and product information is provided for each company. Access customer reviews and keep up to date with product new articles. Whether you are looking for manufacturers of gas spring resources, gas spring air shocks, tension gas springs or customized gas springs of every type, this is the resource for you.

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  • I Am Joe's Gas Spring

    Michael Shade, IQS Editor People who are familiar with Reader's Digest (or who have read or seen Fight Club ) are likely to be familiar with the I am Joe's Body series that was published in Reader's Digest some decades ago. It was a novel concept - describing the functions of various organs in first-person in hopes of connecting with audiences who are bored or intimidated by textbook lessons in anatomy. Independent of context, anatomy lessons can be boring or confusing; some of my readings for biology courses in college...

Industry Information
View A Video on Gas Springs - A Quick Introduction

Gas springs are pneumatic energy storage devices that utilize high pressure gas housed within a cylinder for a number of practical applications, which always involve shock absorption, damping or the exertion of force by way of the gas filled cylinder. The basic function is very similar to air cylinders in that a piston is either compressed or extended based on the pressure differential between the gases within the chamber and those acting upon its exterior.

Employed in a number of industrial, commercial and domestic applications, air springs are used for the optimization of opening, closing, lifting, lowering, adjusting and damping actions. Also known as air shocks and dampers, gas lifts (suppliers found here) and gas struts are commonly used in place of or in conjunction with traditional mechanical springs. Manufacturers and suppliers often offer these well engineered devices in a number of different materials such as aluminum or stainless steel gas springs (manufacturers offering these are found on IQS Directory). In addition to the body material, it is important to consider the composition of the air or gas that will be passing through the spring. Carbon gas springs and nitrogen gas springs are commonly used as they provide many beneficial qualities and are safe to use in most industrial applications. In addition to the material construct, the overall gas spring design must be carefully considered. Several types, such as reducible, adjustable, tension gas springs and locking gas springs are commonly available to suit the vibration isolation and actuation needs placed upon these gas cylinders. The size of these devices may range from two inches to twenty inches or even several feet. The load capacity is equally variable ranging from less than one-hundred to over eighty eight thousand pounds.

The specific needs and requirements for a gas spring depend largely on the application for which it will be used. Furniture, medical and rehabilitation, aerospace, office supply, agriculture, marine, pharmaceutical, food processing and machine engineering are just a few of the many industries that make use of gas springs in regular operations. Proving the importance of these devices, the automobile industry alone uses gas springs for tailgates, hoods, trunks, supports for open doors, suspension, sunroofs, seat adjustment and steering dampening among other applications. Specific examples from other industries include the use of gas springs in tanning beds, awning extension, conveyors and landing gear for planes and jets. To suit these needs, both compression and extension gas springs are available. Compression provides dampening when a force is applied that shortens the stroke, or pushes the piston further into the main cylinder. On the other hand, extension gas springs provide isolation when the rod is fully extended either partially or fully due to high pressure within the chamber. The ability of these carefully calibrated mechanisms to endure the rigorous application of variable pressures at inconsistent velocities is of utmost importance as failure in any number of the aforementioned applications could be fatal. Proper use and maintenance is integral to product safety and longevity, the latter of which often surpasses that of traditional spring mechanisms.

Gas springs, from across the broad range of applications for which they are well suited, all function under the same basic design and principles of operation. Each spring incorporates a cylinder or body, piston and rod, o-rings or other sealing system, intake and outlet valves and gas charge or reservoir. The cylinder houses all other components and has a polished interior to reduce friction. The piston head rests perpendicular and, in conjunction with seals, creates an airtight barrier which divides the cylinder into two compartments. The rod is attached to the piston and extends out one end of the cylinder. While this design may seem relatively simple, most manufacturers use 3D CAD drawing and other design software in the construction of application specific gas springs. This is important as despite its relative simplicity, the operation of these pneumatic devices relies on precision. When force is exerted or a shock encountered, the rod attached to the external mechanisms protrudes deeper into the chamber, moving the piston head towards the opposite end. This reduces the volume of the cylinder, thereby compressing the gas. Resistance is thus created allowing the spring to absorb some of the force or at least slows the motion of the rod before it can reach other more sensitive components of the machine. A great example of this effect is in the shock absorbers (IQS Directory lists manufacturers of these) or suspension system of a car or other vehicle.

Often preferred over traditional mechanical springs, gas springs offer several benefits. Air springs are often more cost effective than metal coils as well as more compact and exceedingly durable. Unlike metal coils, the air cylinders and pistons used in these springs allow for easily adjustable and controlled movement. This adjustability also provides room for correction should gas leak out of the main chamber over time whereas worn coils will need to be replaced. Like mechanical springs, however, there are several factors that must be carefully considered when selecting the proper gas spring for a given application. As aforementioned, the body material is largely important as it must endure not only the physical stresses, but also the chemical and environmental stresses of an application as well. Materials such as stainless steel, thermoplastic, aluminum and steel are often used and sometimes coated with black nitride or chrome plated for further protection. Additional physical considerations include cylinder diameter, maximum width, rod diameter and mounting style. Performance specifications to take into account include working temperatures, absorber stroke, compressed and extended lengths, maximum force and maximum cycles per minute. Gas spring and industry specific professionals can provide helpful insight when selecting the proper device for a given application in order to ensure safety and optimal performance.

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Types of Gas Springs

  • Air shocks are a particular type of gas spring designed for damping and vibration isolation. Also known as shock absorbers, these devices are commonly installed on a variety of vibratory or oscillating industrial equipment such as conveyors and mixers, but most closely associated with vehicle suspension systems and jet or plane landing gear.
  • Air springs utilize a contained column of air inside an elastomeric bellows or sleeve to buffer cyclic motion, provide vibration isolation or serve as a linear actuator.
  • Blocking gas springs have a valve that permits the flow of a pressurized fluid between two compartments of a cylinder cavity separated by a piston. The piston rod is blocked during inward movement by a predetermined force applied to the piston rod.
  • Carbon gas springs have carbon steel bodies, making them useful in rough temperature and chemical environments.
  • Combination gas springs are used to get specific characteristics from different types of gas springs; they have different body and gas spring rod combinations, and are either combined in a parallel or serial fashion.
  • Compression gas springs have a rod that is compressed into a cylinder, and when the compression is removed, the rod extends. These springs cover a large range of forces and strokes and are the most commonly used gas spring
  • Dampers are able to prevent or stop oscillations or vibrations.
  • Extension gas springs have the damping and shock absorption occurring as the rod extends from the cylinder.
  • Gas lifts or gas lifters are simply gas springs used in lifting applications. While gas lifts more commonly refer to a method used for oil lifting or extraction, gas spring lifts are a means of producing force through the use of compressed air in order to lift, raise, push or pull a surface or component as needed.
  • Gas spring design is the precision engineering and construction of pneumatic energy storage devices which provide lifting, lowering, moving, locking, opening, closing and adjusting actions in a number of industrial, commercial and domestic applications.
  • Gas springs utilize a cylinder, which contains compressed gas, and a piston to exert a force.
  • Gas struts are braces or suspension units designed to resist thrust and longitudinal compression.
  • Locking gas springs are pneumatic cylinders that include a stopping or bracing mechanism used to halt motion within the cylinder as needed throughout the stroke.
  • Micro gas springs are small in size and have low force, so they are very versatile.
  • Nitrogen gas springs have lower pressure increase than standard gas springs, and they have consistent, balanced and adjustable force, with more force per area than other springs.
  • Stainless steel gas springs are used to prevent corrosion on the gas spring rod, which leads to the early failure of gas springs.
  • Tension gas springs, or traction springs, retract instead of extend and the piston rod stays in a closed position, moving opposite of other gas springs. Used to keep doors, hatches, lids, etc. closed.

Gas Springs Terms

Compressed Length – minimum length of the spring’s shock.

Damping – is gained while regulating the flow of gas through the valve at the orifice of a gas damper piston, it creates a cushioning affect that slows the mechanism before it extends fully.

End Fittings – are used to attach the gas spring to the item it will be controlling, mounting brackets may also be used. There are different options for multiple applications and purposes.

Extended Length – maximum length of gas spring when it is fully extended.

Force – measured 5mm from full extension of the gas spring, and it is a function of the pressure in the cylinder acting on the cross section of the rod. The larger the diameter of the rod, the lower the force.

K-Factor – ratio of compressed force to extended force, compressed force being always larger than extended force.

Piston – a cylinder or disk that displaces fluids or moves under fluid pressure within a larger cylinder.

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