How do you calculate gas spring placement?
James Stevens
Updated on February 27, 2026
The force required to hold the lid open (F1) can be calculated using the formula: Gas Spring Force (F1) = Mass of lid x Centre of Gravity / Radius of Force x Number of Springs. The calculations show that the closer towards the hinge the moving mounting point gets, the higher the opening force required.
What strength gas strut do I need?
In general the length to choose for gas struts is about 55% of the height of the door you are trying to keep open. So if you have a door that is 1000mm in height a 550mm long gas strut would be about right. In simple terms we are talking half the door height plus a bit when determining optimal gas strut length.
How do you measure for a gas spring lift?
How To Measure Gas Struts
- Measure the Gas Strut when it is fully extended from the Centre of the End Fittings.
- Measure the Diameter of both the Barrel and the Rod.
- Measure the exposed Rod length from the Barrel to the centre of the End Fitting.
How do you calculate the initial force of a gas spring?
The initial force of the gas spring can be calculated as the sealed area of the piston rod or the piston (depending on design) multiplied by the pressure inside the gas spring. The larger the effective cross sectional area of the piston rod or the piston, the more ”powerful” the gas spring will be.
Can I have the current gas spring series included in the re-calculation?
If you would like to have the current gas spring series included in the re-calculation, please choose a different fitting. The re-calculation will consider only gas springs which support your configured fittings and brackets. in der Übersicht finden Sie Ihre im Tool konfigurierten Produkte.
What are the different mounting points for a gas spring?
There are two mounting points for a gas spring, the ‘fixed’ and ‘moving’ mounting points. As the names suggest, the fixed mounting point remains fixed, whereas the moving mounting point rotates through an arc as the application opens and closes.
What is the function of a gas spring?
The primary function of a gas spring is to lift and support an object in a safe and controlled manner. For the designer and end-user of an application, the handling forces are the most important consideration; these are the human and mechanical interactions the spring has with an application.
