Question 1

How do I calculate the force of a gas spring?

Accepted Answer

Multiply the cover weight (G) by the center-of-gravity distance (L), divide by the effective force arm (W) and the number of springs (X), then apply a safety factor of about 1.2. The calculator above performs this F1 formula automatically and returns the newtons (N) per spring.

Question 2

What does F1 mean in a gas spring?

Accepted Answer

F1 is the extension force measured when the rod is fully extended, i.e. the force the gas spring pushes out with at the start of travel. It is the value used to size a gas spring; F2 is the force near full compression and is always higher than F1.

Question 3

How many newtons (N) do I need for my lid?

Accepted Answer

Enter the lid weight, the distance from the hinge to its center of gravity, the effective force arm and the number of springs. The tool returns the minimum F1 per spring and a suggested nominal rating rounded up to the next 10 N.

Question 4

Which factors change the calculated force?

Accepted Answer

Mounting angle, friction, temperature, motion speed and the desired operating feel all shift the real force. The result is a static engineering estimate; we recommend an engineering review before production.

Gas Spring Force Calculator

Gas Spring Force Calculation FAQ