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Tension Gas Springs

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These devices are designed to remain in the tensed or closed position. To compare to mechanical coil springs, the relaxed state of these springs would be when the many coils are close together with no gaps between them. Read More…

Tension Gas Springs Tension gas springs are one of two major categories of gas springs that are pneumatic energy storage devices, which employ compressed gas in order to provide shock absorption, damping or the exertion of force.
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Leading Manufacturers

Arlington Heights, IL  |  847-427-1234

Pascal is an expert when it comes to clamping, changing and control. In particular, our gas springs can have mounting flanges and changing of gas charging pressure. Models include: our ISO compliance model, inch stroke, compact, mini, compact high power and super compact model.

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Pascal Engineering Inc. $$$

Berlin, CT  |  860-229-9902

Precision punch & Tooling is a custom tooling manufacturer serving many industries including injection molding, electronic manufacturers, pharmaceutical, automotive, military and HVAC. Our product line consists of perforators, punch blanks, ejector punches, core & mold pins, EDM die blanks, wire die springs, and miniature tools and components.

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Precision Punch & Tooling $$$

Plymouth, MI  |  734-207-1100

DADCO is the leader in nitrogen gas spring technology, offering a complete line of nitrogen gas springs, nitrogen gas spring lifters, ISO air cylinders, hydraulic core pins and accessories. DADCO's products are widely approved and used in global stamping operations for many industries including metal stamping, automotive and plastic injection molding.

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DADCO $$$

Farmington Hills, MI  |  248-476-0213

Leading the world in innovative deceleration devices: gas springs, hydraulic & rotary dampers, velocity controls, shocks & more. Our gas spring line controls the lifting & lowering of covers, guards, hatches, panels, etc. of various weights. Depend on our highly advanced Applications Department. View our ACE gas spring catalog online for detailed descriptions of our gas spring product types.

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ACE Controls, Inc. $$$
placeholder image Pascal Engineering Inc. Precision Punch & Tooling DADCO ACE Controls, Inc.

Most gas springs are classified as compression springs and employ the opposite working principle of the tension spring, meaning they are extended when at rest and compressed when force is applied. When at rest, the tension gas spring is fully compressed. The piston and attached rod are retracted into the main cylinder. The inclination to pull shut allows the use of such springs in many industries such as automotive, construction, aerospace, marine, medical and food processing.

Damper Without Free Travel Tension Gas Springs - Enertrols, Inc.

In such industries these gas springs help to close and seal doors, hatches, hinges, landing gear, lids and other devices. Providing shock absorption and serving as dampers in the direction of extension, these devices create a tight seal as well as control movement to keep the rate of compression and depression even throughout the stroke.

Also known as traction or reverse acting gas springs, the controlled and sustained movement of these devices makes them preferable to mechanical coil and leaf springs, which just snap back into place instead of providing a controlled release. Considerations to keep in mind when purchasing a tension gas spring include operating temperature, maximum extension and retraction, maximum force, mounting and size.

The design is not that disparate from compression gas spring design. The main body of the spring is a sealed cylinder made of durable materials such as steel, stainless steel, aluminum or thermoplastic which is polished to a micro-smooth finish. The interior finish allows the piston head which transects the chamber to slide up and down the barrel without unnecessary friction.

Attached to this head is a rod which is attached at the other end to the external equipment to be supported, protected or sealed. O-rings and seals are used both around the piston head and rod to ensure that the compartments remain air tight. Although the design is similar to most other gas springs, the basic operation of tension springs is very different.

Rather than retract, these springs extend the piston rod when force is applied in the form of compressed air on the opposite side of the piston head, but otherwise pull shut. Locking gas springs that work using tension further ensure an adequate seal for doors, hatches and other enclosures. Locking and adjustable mechanisms are also common to hold these lids and latches open when needed as the natural tendency is for them to pull shut when force is relieved.