Gate gas springs

Please read this paragraph first before looking at the brochures

Fully damped in extension, 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 in extension, ensuring that the closing 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).

Please note that whilst there is no damping in compression, gate gas springs are self-powered and are producing a high force regardless of the direction of the movement, please check this page for further information.

When you try to close a gate with your hand, you need to exert a force on the gate. This force (in Newtons) times the distance between your hand and the hinge (in metres) gives you the "manual closing torque" required to close the gate.

If you want the gate gas spring to close this same gate, then you need to make sure that the "gate gas spring torque" is higher than the "manual closing torque" (in NewtonxMetre).

Typically, gate gas springs can produce the following torques:

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 gate gas spring type, force and mounting position so the "gate gas spring torque" is giving at least 7 to 12 N.m more than the maximum "manual closing torque" you calculated.

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 "manual closing torque" of 10N x 2m = 20 N.m and you should choose a gas spring and mounting position which will give you more than 30 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.

If you realise that the gas spring is too strong you can reduce the force using the internal ball valve. Before you do so, please note that the minimum working force for this gas springs is 100 newtons. If you reduce the force below 100 newtons, the gas spring's life may be shortened.

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  Application Example 101
	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 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)  Application Example 9 (with an opening of 111 degrees)
	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.