Service Life And Replacement Of The Cutter; How To Use (Bending) - Hitachi VB 16Y Handling Instructions Manual

SERVICE LIFE AND REPLACEMENT OF THE
CUTTER
1. Service life of cutter (Fig. 6)
Repeated cutting of the rebar can result in the "wear
and tear", "deformation", "nicked edges", etc. Using
the cutter under such circumstances will not only
damage the machine but also there will be a fear of
the broken cutter fragments flying around.
Replace it with a new cutter after cutting about 8,000
pieces of rebar (a rough guide).
Blade
2. Before removing the cutter
WARNING!
To prevent accidents, always be sure to turn the switch
OFF and unplug the power cord from the receptacle.
(1) Pull the switch lightly and let the upper cutter move
slowly. When the hexagon socket bolt that fixes the
upper cutter comes out of the cam cover, turn the
switch OFF and stop the motor.
(2) Unplug the power cord from the receptacle.
3. Removal
If you remove the hexagon socket bolt using the
provided Allen key, you can remove the cutter.
(Pushing the cutter guard up in the direction of the
arrow shown in Fig. 7, facilitates removal of the upper
cutter.)
Hexagon
socket bolt
Removal of the lower cutter can be easily made if the
lower cutter is wrenched with a Phillips head screwdriver
as shown in the following diagram. (Fig. 8)
Fig. 6
Cutter guard
Upper cutter
Lower cutter
Fig. 7
4. Mounting
(1) Get rid of dust around the cutter installing section and
clean it up.
(2) Align the hole of a new cutter and the position of a
pin, and insert it into the installing section.
(3) Also replace the hexagon socket bolt (packed along
with the cutter) with a new one simultaneously,
completely tighten it using the attached Allen key, and
then fix the cutter.

HOW TO USE (BENDING)

WARNING!
Note that the unit is not a hand-held tool. Be absolutely
sure to use the unit only after placing it on a stable
spots such as floor, ground, etc.
Never bring your hand close to the bending roller
during operation.
Never bend any materials other than the rebars. If you
attempt to do so, the material can splinter into pieces
and scatter.
Do not bend any rebar exceeding the maximum
capacities of the unit described in the specifications.
Never bend any hard materials such as PC (Precast
concrete) steel. Materials of this type are likely to
scatter into pieces and cause injuries.
The rebar you are bending may have a hard spot in it.
Quality may vary within each rebar. Do not attempt
to bend NON-GRADE Rebar.
Never place your hand onto the bending side of the
rebar. If you do so, your hand may be caught in the
mechanical parts.
Bend less than every 3 pieces of rebar with a 10 mm
diameter, less than every 2 pieces with a 12 mm
diameter, and every 1 piece with a 16 mm diameter.
Remember that the cutter moves even during the
bending operation, thereby, close the cutter cover
without fail.
Begin operation only after marking sure that there are
no people within the turning range of the material to
be bent.
Reserve an extra length of at least 200 mm on the
bending length of the rebar to be bent. (Fig. 9)
If the extra length is not long enough, the rebar can
come off during bending operation, or it can break
into fragments and scatter dangerously.
Fig. 8
6