Spring

To calculate the force of a gas spring you should apply the following formula: F1 = ( ( M x D ) : L ) : nm ) x ( 1,1~1,15) The result should be increased of 10-15%, since the force vector of the spring is not parallel to the direction of the weight vector of the object to be lifted and also to compensate any possible frictions in the system which could detract from the efficiency of the force of the spring. F1 = Push force of the spring which opposes to the weight of the object to be moved, shown as vector; M = Weight in kg of the object to be lifted, shown as vector; B = Centre of gravity; C = Point of connection of the gas spring to the mobile part; S = Point of connection of the gas spring to the fixed part; O = Fulcrum and point of rotation of the mobile object; D = Distance in mm measured horizontally between the centre of gravity B and the point of rotation O; L = Length in mm of gas spring working arm corresponding to the smaller distance between the attachment S or the attachment C and the centre of rotation O; it cannot be greater then the stroke; nm = Number of springs to be used in the application (1 or 2 or more). - The springs contain pressure gas - Don’t open, subject to any bending stress or overload and force in any way - The spring force is based on an environmental temperature of 20°C. - Load changes 3,5% every 10° - Whenever possible, gas springs should be installed so that the piston rod points down in the inactive state