Selection Of Blades - Hitachi CR 13VBY Handling Instructions Manual

(1) Press a pushbutton. When you do this, a base lever will
jump out to prepare the base for adjustment.
(2) Push up the base tip and jog the base back and forth.
(3) You can adjust the base position in three stages.
Move the base at an interval of about 15 mm, fi nd the
position where the base hooks, and press in the base
lever with your fi ngers. The base is secured when you
hear the clicking sound.
Adjusting the blade reciprocating speed
This unit has a built-in electronic control circuit that
makes it possible to adjust the variable speed of the saw
blade either both by pulling a switching trigger or turning
a dial. (Fig. 6)
(1) If you pull the trigger further in, the speed of the blade
accelerates. Begin cutting at a low speed to ensure
the accuracy of your target cut position. Once you've
obtained a suffi cient cutting depth, increase the cutting
speed.
(2) On the dial scale, "5" is the maximum speed and "1" the
minimum. The high speed is generally suitable for soft
materials such as wood, and the low speed is suitable
for hard materials such as metal. We recommend that
you use the following as a rough guide in selecting the
suitable speed for the materials you are cutting.
Example of materials to
be cut
Mild steel pipes /
cast-iron tubes /
L-shaped angle steel
Wood / wood with nails
driven in
Stainless steel
Aluminum / brass /
copper
Plaster board
Plastic / fi ber board
CAUTION
○ When cutting at low speed (scale of 1 – 2), never cut a
wooden board more than 10 mm thick or a mild steel
plate more than 2 mm thick. The load on the motor can
result in overheating and damage.
○ Although this unit employs a powerful motor, prolonged
use at a low speed will increase the load unduly and
may lead to overheating. Properly adjust the saw blade
to allow steady, smooth cutting operation, avoiding any
unreasonable use such as sudden stops during cutting
operation.

SELECTION OF BLADES

To ensure maximum operating effi ciency 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 reciprocating
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 reciprocating 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
4 below.
Recommended dial scale
2 ― 4
5
1 ― 3
2 ― 4
4 ― 5
1 ― 3
Table 1: HCS blades
Blade
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
No. 8 For cutting vinyl chloride pipe less
than 135 mm in diameter
For cutting and roughing lumber
No. 9 For cutting mild steel pipe less
than 130 mm in diameter when
used with cut off guide
No. 95 For cutting stainless pipe less
than 105 mm in diameter
No. 96 For cutting stainless pipe less
than 30 mm in diameter
NOTE
No. 1 – No. 96 HCS blades are sold separately as
optional accessories.
2. Selection of BI-METAL blades
The BI-METAL blade numbers in Table 2 are described
on the packages of special accessories. Select
appropriate blades by referring to Table 2 and 4 below.
Table 2: Bl-METAL blades
Blade
No.
No. 101 For cutting steel and stainless pipes
less than 60 mm in outer diameter
No. 102 For cutting steel and stainless pipes
less than 130 mm in outer diameter
No. 103 For cutting steel and stainless pipes
less than 60 mm in outer diameter
No. 104 For cutting steel and stainless pipes
less than 130 mm in outer diameter
No. 105 For cutting steel and stainless pipes
less than 60 mm in outer diameter
No. 106 For cutting steel and stainless pipes
less than 130 mm in outer diameter
No. 107 For cutting steel and stainless pipes
less than 60 mm in outer diameter
No. 108 For cutting steel and stainless pipes
less than 130 mm in outer diameter
No. 121 For cutting and roughing lumber
No. 131 All purposes
No. 132 All purposes
NOTE
Nos. 101 – No. 132 Bl-METAL blades are sold separately as
optional accessories.
5
English
Thickness
Uses
(mm)
2.5 – 6
2.5 – 6
Below 3.5
50 – 70
Below 30
2.5 – 15
Below 105
2.5 – 6
Below 2.5
Below 2.5
Thickness
Uses
(mm)
2.5 – 6
2.5 – 6
2.5 – 6
2.5 – 6
2.5 – 6
2.5 – 6
Below 3.5
Below 3.5
300
―
―