GEZE E740 - Page 22

22
Bottom-hung
window inwards
Height of case-
ment b [mm]
Adjustable stroke
[mm]
from 200 100
from 400 100 and 200
from 850 100, 200 and 300*
from 1300 * 100, 200, 300 and 400*
Top-hung
windows
outwards
Height of
casement b [mm]
Adjustable stroke
[mm]
from 200 100
from 350 100 and 200
from 500 100, 200 and 300
from 650 100, 200, 300 and 400
* for stroke 300: height of casement 450-850 and stroke 400: height of
casement 450-1300 swivel-bracket ID-No. 122106 necesary (order separately)
Formula for calculating the opening and closing force
for bottom-hung and top-hung windows
F = force required for opening and closing:
P = weight of casement (in N)
Stroke/lift = travel of casements (drive stroke)
b = Height of casement
min. space
requirement at the top
min. space require-
ment at the bottom
Top-hung window Bottom-hung
window
F = 250 N
max
F = 300 N
max
P
P
F
F
b
b
F=
b
F=
1000mm
250 N x 300 mm x 0.68
F= 51 N
P x stroke x 0.68
Sample:
P = 25 kg = ca. 250 N
Stroke = 300 mm
b = 1000 mm
stroke
stroke