Assembly/Filling the cylinder core
ix Gamma
22
Master key wafers
Master key wafers are applied in order to provide different locking alternatives ac-
cording to the existing locking plan. A locking cylinder without master key wafers can
only be operated with one key, whereas a locking cylinder with master key wafers
can be operated with different keys.
On the basis of the figures on the table with cylinder assembly structures you can
see which and how many master key wafers you must apply. The figures listed verti-
cally below a core pin number (highlighted in grey) provide information on the grada-
tion provided at each core pin in the cylinder.
As you can see from the table, each pin position in the locking systems is calculated
with a double gradation (master key gradation). Once determined, the even (0, 2 ,4
,6, 8) or uneven (1, 3, 5, 7, 9) value of each pin position cannot be modified anymore.
It is not necessary to observe a certain direction of assembly for the master key wa-
fers.
Master key wafers
0
3
1
4
1
Profile:
2
5
235A
4
5
6
Example
N
AF
N
AF
N
Ill. 15: Master key wafers
The master key wafers have a length of
0-8mm, 1.6mm, 2.4mm or 3.2mm.
Any master key gradation corresponds to
0.8mm.
Here:
You must apply
3 master key wa-
fers (2,4,6)
to the
first core pin (0).
As there is one master key gradation
between each figure
(0-2; 2-4; 4-6),
you
must insert
3 master key wafers
with a
length of
0.8mm each
.
Insert
1 master key wafer
with a length
of
0.8mm
(master key gradation
: 3-5
) in
the second
core pin (3).
No master key wafer
must be applied to
the third (1) and fourth (2) core pin
in
this case.
Due to the two master key gradations (
1-
5
) you must apply
1 master key wafer
with a length of
1.6mm
to
the fifth core
pin (1).
