Method for calculating the force and stroke of an electric actuator for a hatch or tailgate.
1 - Spring force / pressure on electric cylinder
The pressure required for the electric actuator is calculated by replacing the values requested in the
F1 = ( (mx RH) / (2 x N x x2) + 5 ) x 9.81 = Pressure of the electric cylinder expressed in Newtons
F1 = force / pressure of the electric cylinder
N = number of electric cylinder required
m = weight (in Kg) of the tailgate / of the object to be lifted, to be maneuvered
RH = length (in meters) of the tailgate / of the object to be lifted, to be maneuvered
x2 = distance (in meters) between the point of application of the electric actuator on the tailgate and the axis of rotation of the tailgate.
For a tailgate with the following characteristics and values:
N = 2
m = 50 kg
RH = 1.50m
x2 = 0,40 m
F1 = ( (50 x 1,5) / (2 x 2 x 0,40) + 5 ) x 9.81 = 508N
In this case, the tolerance margin being +/- 50 N, we recommend 2 electric jacks of 550N.
2 - Determine the dimensions of the electric cylinder
As a general rule, we recommend respecting the following ratio: stroke 1/3 of the RH side ( 90° opening).
Example: RH = 1.5m 1.5/3 = 0.5m
-Course 500mm = ST 500+...+V...
-The dimension x2 must be 50mm less than the stroke of the electric cylinder (fig2 and fig4). -The dimension y1 must be 100mm less than the stroke of the electric cylinder (fig1 and fig3). Warning: The proposed locations above are examples and in no way commit motionproplus.com. You must consult a design office to validate.