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8.2 Cutting double female bit keys
We can also use the instructions for cutting very short bit or double bit keys to cut some bit or double bit (female)
keys, taking care to observe and check some dimensional and operational characteristics:
Dimensional:
-
Maximum height of bit against stem axis = 15 mm (max)
-
Maximum length of bit to be cut = 17 mm (max)
Operational:
•
Between the end of the bit (towards the key head) and the left-hand internal side of the clamp there must be
a space of 2 mm (max) and no less than 1,5 mm (cutter thickness).
•
During cutting (especially for iron keys) do not exert too much pressure when pushing the key towards the
cutter, as the key tip has nothing to butt against.
NOTE: the precision of keys cut in this way will refer to the external stem diameter rather than the
centre of the internal hole in the tip. Any imprecision between the hole axis and the stem is additional to
the normal tolerance for manual cutting.
Fig.50
It is advisable to use optional accessories for female bit and double bit keys (see OMNIA, OMNIA
650rpm, OMNIA MAX and OMNIA W MAX Specialist Guide).
Operating Manual
OMNIA / OMNIA 650rpm / OMNIA MAX / OMNIA W MAX
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