33
Mounting
cylinder dimension) are important. In each case, measure from the fastening screw of
the cylinder in the lock fitting (including the door fittings
(M)
) and add 8 - 15 mm (ideally
10 mm) to the inside dimension to calculate the suitable standard dimensions.
Example:
You measure an outside dimension
(2)
of 40 mm and an inside dimension
(1)
of 40 mm as well. Therefore, the cylinder is a 40/40 cylinder. In order to use the
KeyMatic drive, you therefore need the next standard size, a 40/50 cylinder. The cylin-
der will then protrude inside by 10 mm
(3)
.
A
H
G
F
E
D
A
C
B
A
I
J
S
R
1
3
2
K
L
N
M
O
P
Q
inside
dimension
outside
dimension
inside dimension
+
additional distance
K
N
L
M
A
Fig. 3:
Lock cylinder
K
– Inside door fitting
L
– Rosette
M
– Screw for fastening the lock cylinder in the mortise lock
N
– Lock cylinder
