Gate gas springs

Please read this paragraph first before looking at the brochures

Fully damped in extension and free to move in compression, IGS standard gate gas springs/gas struts are a suitable alternative to standard gate closers and allow a much greater choice of mounting positions. These gas springs are using IGS standard design for outdoors gas springs and have been specifically designed to withstand over 100,000 cycles outdoors or indoors.

These gas springs are heavily damped, ensuring that the closing or opening movement of the gate is slow and cannot hurt or injure the person standing next to it (gas spring's force may need to be adjusted to obtain optimal speed/force).

The gas spring's length and force must be chosen so it will be able to counter-balance any friction in the hinge. In optimum conditions the gas spring will give the following moments (in Newton x meter):

For a 150mm stroke gas spring fitted 45deg, 100mm away from the pivot point
with 100 Newton --> 7 N.m
with 500 Newton --> 35 N.m

For a 250mm stroke gas spring fitted 45 deg, 165mm away from the pivot point:
with 100 Newton --> 12 N.m
with 300 Newton --> 36 N.m

Always chose a gas spring type and force so the spring is giving at least 7 to 12 N.m more than it is required to counter act the friction.

For example, if you need to exert a manual force of 10 Newton at the end of a 2m long gate in order to close it, this means you are in fact exerting a moment of 10 x 2 N.m = 20 N.m and you should choose a gas spring and mounting position which will give you more than 30 N.m (20 N.m + 10 N.m).

Now, which one should you choose, 150mm or 250mm stroke ?
Choose the 150mm stroke gas spring if you can mount this gas spring at less than 100mm from the pivot point of the gate (see page 3 of datasheet).
With a difference of 7 N.m, this gas spring will close a gate in about 5 to 6 seconds.

Choose the 250mm stroke gas spring if you can mount it between 120mm and 165mm from the pivot point of the gate (see page 3 of datasheet). With a difference of 12 N.m, this gas spring will close a gate in about 10 to 14 seconds.

The standard lead time on these gate gas springs often vary depending on demand, please call our sales office for an update.

Please note that gas springs are NOT designed to resist well to vandalism.
If someone stands on the side of the gas spring: at best the internal seal will be damaged and the gas spring will starts loosing its force very slowly, at worst the gas spring will rapidly leak and one or both of the end-fittings will break.

For this reason, please ensure that the gate gas springs are out of reach of children and vandals.

Other sizes including a fully stainless steel version can of course be manufactured against your specification.

Gate gas spring	Part number	Description
	F100113/BB/0100	150mm stroke gate gas spring/gate closer Metal protective shroud - Stainless steel 316 rod. Force: 100 up to 500 newtons  Product Datasheet
	F100600/BB/0100	250mm stroke gate gas spring/gate closer Metal protective shroud - Stainless steel 316 rod. Force: 100 up to 300 newtons  Product Datasheet  Application Example 1  Application Example 2  Application Example 3  Application Example 4  Application Example 5  Application Example 6 (when there's only a 5mm gap behind the gate)  Application Example 7 (when there's 40mm gap or you can make a slot at least 32mm deep behind the gate)
	Example of an F100600/BB/0100 fitted on an access wooden door. As per Application Example 7. On this video, when the door is fully open, the gap behind the door goes from 20mm at the hinge, up to 70mm at the door handle. The fixed point is 150mm away from the centre of the hinge and the door point is 693mm away from the centre of the hinge.