• 1. Setting up repulsive force can be obtained throngs the following formula,
  and it can be determined with consideration of temperature and other conditions.
• 2. Please make the actual repulsive force of the product higher than F1 x 1.2 (Safety Factor).
• 3. For the life and the safety of the hinge, etc., please apply more than two.

• L1 : Horizontal distance parallel with the earth surface from the hinge to the door’s center or gravity
• L2 : Vertical distance from hinge to the central line of the gas spring
• W : Weight of the door
• N : Quantity of the gas spring to be attached

• Please make the really repulsive force of the product to be higher than F1 x 1.2 (safely factor)
• For the life span and the safety of the hinge, etc., please apply more than two.

• A : Repulsive force of position which piston rod is compressed by 10mm to reach
• B : Repulsive force of 10mm position right before expanding a piston rod fully
• C : Repulsive force of 10mm position right before compressing a piston rod fully
• D : Repulsive force of position where piston rod is expanded by 10mm to reach again after compressing it 10mm

Variation of gas spring repulsive force (F1) with temperature change

• In accordance with ideal gas equation, the force for every 10°C of the variation of temperature changes by 3.4% each. Thus considering the constant temperature of product applied to the gas spring, the repulsive force is determined.
• However, because of the change in viscosity of small quantity of oil or grease injected inside, the real value may be changed differently.