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Locking gas springs

The locking gas springs manufactured by IGS are size 10mm compression gas springs with a locking mechanism: The rod always extend when the locking mechanism is released.

When extended, the minimum factory set force is 150 newtons and maximum is 1200 newtons.

Other types of locking gas springs can also be designed according to your specification for quantities over 5000 gas springs per annum.

A locking gas spring incorporates a mechanism to enable the rod to be locked at any point in its travel. This mechanism is actuated by a plunger that protrudes from the rod. 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, which have the following characteristics when locked:

Flexible good resistance to rod being pushed of pulled
Rigid in tension Rigid when rod is being pulled, high resistance to rod being pushed
Rigid in compression High resistance to rod being pulled, rigid when rod is being pushed


All three types of locking 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.

Release valve: 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.

Comparison chart:

  Flexible Rigid in tension Rigid in compression
Rigidity in tension good Fully rigid High
Rigidity in compression good High Fully rigid
Adjustable force 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 adjustement. 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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