Selection Of Blades - Hitachi CR 13VC Handling Instructions Manual

accumulate in the plunger section, always clean it
before use.
Do not remove the front cover (refer to Fig. 1).
Be sure to hold the body from the top of the front
cover.
During use, press the base against the material
while cutting.
Vibration can damage the saw blade if the base is
not pressed firmly against the workpiece.
Furthermore, a tip of the saw blade can sometimes
contact the inner wall of the pipe, damaging the
saw blade.
Select a saw blade of the most appropriate length.
Ideally, the length protruding from the base of the
saw blade after subtracting the stroke quantity should
be larger than the material (see Fig. 15 and
Fig. 17).
If you cut a large pipe, large block of wood, etc.,
that exceeds the cutting capacity of a blade; there
is a risk that the blade may contact with the inner
wall of the pipe, wood, etc., resulting in damage.
(Fig. 16, Fig. 18)
To maximize cutting efficiency for the materials you
are using and working conditions, adjust the speed
of the saw blade.
1. Cutting metallic materials
CAUTION
Press the base firmly against the workpiece.
Never apply any unreasonable force to the saw
blade when cutting. Doing so can easily break the
blade.
(1) Fasten a workpiece firmly before operation. (Fig. 19)
(2) When cutting metallic materials, use proper machine
oil (turbine oil, etc.). When not using liquid machine
oil, apply grease over the workpiece.
CAUTION
The service life of the saw blade will be drastically
shortened if you don't use machine oil.
(3) Use the dial to adjust the speed of the saw blade
to suit your working conditions and materials.
2. Cutting lumber
(1) When cutting lumber, make sure that the workpiece
is fastened firmly before beginning. (Fig. 20)
(2) You can cut efficiently if the speed of the saw blade
is set to dial scale "5".
CAUTION
Never apply any unreasonable force to the saw
blade when cutting. Also remember to press the
base against the lumber firmly.
3. Sawing curved lines
We recommend that you use the BI-METAL blade
mentioned in Table 2 for the saw blade since it is
tough and hardly breaks.
CAUTION
Delay the feed speed when cutting the material into
small circular arcs. An unreasonably fast feed may
break the blade.
4. Plunge cutting
With this tool, you can perform plunge cutting on
plywood panels and thin board materials. You can
carry out pocket cutting quite easily with the saw
blade installed in reverse as illustrated in Fig. 22,
Fig. 24, and Fig. 26. Use the saw blade that is as
short and thick as possible. We recommend for this
purpose that you use BI-METAL Blade No. 132
mentioned in Table 2. Be sure to use caution during
the cutting operation and observe the following
procedures.
(1) Press the lower part (or the upper part) of the base
against the material. Pull the switch trigger while
keeping the tip of the saw blade apart from the
material. (Fig. 21, Fig. 22)
(2) Raise the handle slowly and cut in with the saw
blade little by little. (Fig. 23, Fig. 24)
(3) Hold the body firmly until the saw blade completely
cuts into the material. (Fig. 25, Fig. 26)
CAUTION
Avoid plunge cutting for metallic materials. This can
easily damage the blade.
Never pull the switch trigger while the tip of the
saw blade tip is pressed against the material. If you
do so, the blade can easily be damaged when it
collides with the material.
Make absolutely sure that you cut slowly while
holding the body firmly. If you apply any
unreasonable force to the saw blade during the
cutting operation, the blade can easily be damaged.
5. Cut off guide for cutting pipe (optional accessory)
Cutting
Product
application
Cut-off Outer diameter
guide (L) 75mm – 165mm
NOTE
Please refer to the cut off guide user's manual for
details on how to use it correctly.

SELECTION OF BLADES

To ensure maximum operating efficiency and results, it
is very important to select the appropriate blade best
suited to the type and thickness of the material to be cut.
NOTE:
Dimensions of the workpiece mentioned in the table
represent the dimensions when the mounting
position of the base is set nearest to the body of
the saber saw. Caution must be exercised since
dimensions of the workpiece will become smaller
if the base is mounted far away from the body of
the saber saw.
1. Selection of HCS blades
The blade number of HCS blades in Table 1 is
engraved in the vicinity of the mounting position
of each blade. Select appropriate blades by referring
to Tables 1 and 3 below.
Table 1: HCS blades
Blade
Uses
No.
No. 1 For cutting steel pipe less than
105 mm in diameter
No. 2 For cutting steel pipe less than
30 mm in diameter
No. 3 For cutting steel pipe less than
30 mm in diameter
No. 4 For cutting and roughing lumber
No. 5 For cutting and roughing lumber Below 30
English
Blade
Code No.
used
No. 9 321113
Thickness
(mm)
2.5 – 6
2.5 – 6
Below 3.5
50 – 70
8