Adjustable Locking Gas Springs
A locking gas spring incorporates a mechanism to enable the rod to be locked at any point in its travel. A plunger that protrudes from the rod actuates this mechanism. When this plunger is depressed the rod is free to operate as normal. When the plunger is released, which may be at any point in the stroke, the rod is locked in that position. IGS offers three types of locking gas springs, with the following characteristics when locked:
- FLEXIBLE good resistance to rod being pushed or pulled
- RIGID IN TENSION no flex when rod is being pulled, slight flex when rod being pushed
- RIGID IN COMPRESSION slight flex when rod being pulled, no flex when rod is being pushed
All three types of lockable gas springs have the same locking mechanism. This locking mechanism operates when the plunger rod is depressed by opening a valve in the piston. When the plunger rod is released the valve closes and the passage of oil or gas is prevented, locking the piston in that position.
Aluminum Locking Gas Springs
Industrial Gas Springs also offers gas springs with an aluminum body. These aluminum locking gas springs are mainly used by the Aerospace industry for weight and fuel efficiency considerations.
Both flexible and rigid in tension gas springs can be supplied with a release valve, which allows the installer to reduce the force. This release valve also allows IGS to easily and economically recharge the gas spring should too much gas be released.
A compressive or tensile overload function can be added to our locking springs for manual override of the locking mechanism. This feature allows for fast or emergency override of the spring’s locking feature and prevents damage to the application or spring.
Locking Gas Spring Comparison Chart
|Flexible||Rigid in Tension||Rigid in Compression|
|Rigidity in Tension||Good||Fully Rigid||High|
|Rigidity in Compression||Good||High||Fully Rigid|
|Release Valve Option||Yes||Yes||No|
|Typical Applications||Chair backs, seat height adjusters and equipment for the physically disabled where the flexing gives a comfortable "bouncy" feel. Further applications are those where no or little extra force is applied once the gas spring has been locked such as VDU height adjustment.||Applications for rigid in tension gas springs include hospital beds, aircraft, coach and rail seat back recline control and wheel chair recline and support systems.||Applications include operating, massage and veterinary tables and wheel chair recline and support systems. This type of locking gas spring is always used where no movement can be tolerated when the appartus is in its locked position.|
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