HIOS BLF-2000 Operation Manual page 18

● Movements of the inner mouthpiece
Vacuum starts.
Sealing with a screw
Engagement with
vacuum
● Movements of the outer mouthpiece
Vacuum starts.
Sealing with a screw
Engagement with
vacuum
* Because the mouthpiece is thinner than the screw's outer diameter, you can effectively fasten the
screw in a narrow space.
● Comparison in case of screw fastening at a slant:
e.g.) 4mm screw is tightened with the pilot hole deviated from the straight position by 1.5mm.
・The screw doesn't fall because
of the high fulcrum.
* With a long bit holder, a screw doesn't fall and slanted fastening can be prevented.
Sliding mouthpiece
Mouthpiece holder
BLFR series Normal screwdriver
Fulcrum
Mouthpiece spring
The sliding mouthpiece moves hori-
zontally to hold the screw head and
keeps it straight.
Sliding mouthpiece
Fulcrum
・The screw falls because of the
deviation of the pilot hole.
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The sliding mouthpiece
moves horizontally to
hold the screw head and
keeps it straight.