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●
Movements of the inner mouthpiece
Vacuum starts.
Sealing with a screw
Engagement with
vacuum
Sliding mouthpiece
Mouthpiece spring
Mouthpiece holder
●
Movements of the outer mouthpiece
Sliding 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.
10°
1°
Fulcrum
Fulcrum
・The screw doesn’t fall because
of the high fulcrum.
・The screw falls because of the
deviation of the pilot hole.
BLFR series
Normal screwdriver
* With a long bit holder, a screw doesn’t fall and slanted fastening can be prevented.
The sliding mouthpiece
moves horizontally to
hold the screw head and
keeps it straight.
The sliding mouthpiece moves hori-
zontally to hold the screw head and
keeps it straight.
