Hitachi CR 13VBY Technical Data And Service Manual

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POWER TOOLS
TECHNICAL DATA
AND
SERVICE MANUAL
RECIPROCATING SAW
CR 13VBY
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
LIST No. E713 Feb. 2007
C
MODEL
CR 13VBY
REMARK:
Throughout this TECHNICAL DATA AND SERVICE MANUAL, a symbol(s)
is(are) used in the place of company name(s) and model name(s) of our
competitor(s). The symbol(s) utilized here is(are) as follows:
Symbols Utilized
Competitors
Company Name
Model Name
Milwaukee
6536-21
M
BOSCH
GSA1100PE
B
Makita
JR3070CT
J
CONTENTS
Page
1. PRODUCT NAME ............................................................................................................................ 1
2. MARKETING OBJECTIVE .............................................................................................................. 1
3. APPLICATIONS ............................................................................................................................... 1
4. SELLING POINTS ........................................................................................................................... 1
4-1. Selling Point Descriptions ................................................................................................................ 2
5. SPECIFICATIONS ........................................................................................................................... 8
5-1. Specifications ....................................................................................................................................8
5-2. Optional Accessories ........................................................................................................................9
6. COMPARISONS WITH SIMILAR PRODUCTS .............................................................................. 11
6-1. For the U.S.A. Market ..................................................................................................................... 11
6-2. For European Market ...................................................................................................................... 11
7. COMPARISONS IN VIBRATION LEVEL ...................................................................................... 12
8. COMPARISONS IN CUTTING TIME ............................................................................................. 13
8-1. Cutting Steel Pipes .........................................................................................................................13
8-2. Cutting Wood ..................................................................................................................................14
8-3. Cutting Steel Pipes with Reversely Mounted Blade ........................................................................15
8-4. Cutting Wood with Reversely Mounted Blade ................................................................................16
8-5. Cutting Operation for Long Blade Life ............................................................................................17
9. PRECAUTIONS IN SALES PROMOTION .................................................................................... 18
9-1. Handling Instructions ......................................................................................................................18
9-2. Caution Plate ..................................................................................................................................18
10. REPAIR GUIDE ........................................................................................................................... 19
10-1. Precautions in Disassembly and Reassembly ..............................................................................19
10-2. Lubrication ....................................................................................................................................28
10-3. Tightening Torques .......................................................................................................................29
10-4. Wiring Diagram .............................................................................................................................29
11. CONFIRMATION AFTER REASSEMBLY ................................................................................... 31
11-1. Internal Wire Precautions ..............................................................................................................31
11-2. Insulation Tests .............................................................................................................................31
11-3. No-load Current Value...................................................................................................................31
12. STANDARD REPAIR TIME (UNIT) SCHEDULES ...................................................................... 32
Assembly Diagram for CR 13VBY
--- 1 ---
1. PRODUCT NAME
Hitachi 130 mm Reciprocating Saw, Model CR 13VBY
2. MARKETING OBJECTIVE
The new Model CR 13VBY is a low-vibration reciprocating saw. It is equipped with the counter weight mechanism
to greatly reduce vibration during cutting operation. Moreover, the Model CR 13VBY offers the class-top cutting
performance thanks to the powerful motor. Features of the Model CR 13VBY include the Hitachi-original swing cut
mechanism, toolless blade detachable mechanism, and double-molded front cover and handle for easier
operation and maintenance.
3. APPLICATIONS
Cutting pipes and angles
Cutting or plunge cutting in various types of wood workpieces
Cutting various types of metals such as mild steel, aluminum and copper
Cutting various types of synthetic resin materials such as bakelite and vinyl chloride
4. SELLING POINTS
Saw blade can be
mounted in either upward
or downward direction
Fast cutting speed thanks to the high-power motor
Vibration is greatly reduced thanks to the counter
weight mechanism
Comfortable soft grip
handle
Swing cut mechanism
Toolless blade
detachable mechanism
Toolless base
adjustment mechanism
Dust- and water-resistant
triple-sealing construction
Speed selectable dial
and switch trigger
Durable double-molded
front cover
Powerful and unique design
--- 2 ---
4-1. Selling Point Descriptions
(1) Vibration is greatly reduced thanks to the counter weight mechanism
There is a low-vibration counter weight mechanism in the Model CR 13VBY. Vibration is suppressed by
reciprocating the counter weight in a direction opposite to the plunger that reciprocates in forward and
backward direction. Thus the Model CR 13VBY can greatly reduce vibration experienced by the user during
cutting operation (about one third of the vibration level of the current Model CR 13VA).
Reciprocating in opposite directions
<Low-vibration mechanism>
Plunger
(Reciprocating shaft)
Plunger
Counter weight
Counter weight
Gear
(2) Fast cutting speed thanks to the high-power motor
The Model CR 13VBY can cut various construction materials efficiently thanks to the high-power motor whose
maximum output is over 1,300 W. The number of strokes is also increased to "0 to 3,000 min
-1
" (Model
CR 13VA: 0 to 2,800 min
-1
) for faster cutting speed.
(3) Speed selectable dial and switch trigger
The Model CR 13VBY is equipped with the electronic control circuit to adjust the cutting speed steplessly by
means of the dial and the switch trigger depending on working conditions and workpieces.
--- 3 ---
(4) Toolless blade detachable mechanism (Same as the Model CR 13V)
Recently, most saber saws on the market are equipped with a mechanism that requires no tool such as a
hexagonal wrench for mounting and removal of saw blades. The Model CR 13VBY is also equipped with such
a mechanism in order to replace the saw blade speedily.
[ Features of the toolless blade detachable mechanism ]
Easy to mount and remove the saw blade
The saw blade can be easily mounted and removed just by pressing the lever.
Stronger bolt
The Model CR 13VBY is equipped with the special bolt M5 that is stronger than the special bolt M4 of the
former Model CR 13V.
(b) Insert the saw blade all the way into the small
slit of the plunger tip with the lever pushing.
(c) Release the lever and pull back the saw blade two or three times by hand to check that the blade is
securely mounted. When pulling the blade, you will know it is properly mounted if it clicks and the lever
moves slightly.
Lever
Saw blade
Click
(a) Push the lever in the direction of the arrow
marked on the lever.
<How to mount the saw blade>
Lever
Saw blade
Lever
--- 4 ---
< Construction of the toolless blade detachable mechanism >
Blade holder
Holder pin to secure the blade
Spring to pull back
the holder pin
Saw blade
Lever to mount and remove the saw
blade
Special bolt
Spring
Plunger
(Reciprocating shaft)
Heat-insulating and dust-
resistant rubber cap
< Maintenance of the toolless blade detachable mechanism >
After use, clean the toolless blade detachable mechanism with a brush for smooth functioning. In addition to
the regular maintenance, perform the following effective maintenance occasionally.
Cleaning the inside of the toolless blade detachable mechanism
Pull the rubber cap provided on the lever in the arrow direction as shown below. Then the rubber cap can be
easily removed from the lever. Remove dust from the inside of the blade holder by spraying air or the like.
Periodically lubricate around the blade holder with cutting oil.
Lever
Rubber cap
Lever
Cutting oil
Nut
--- 5 ---
Do not use any saw blade with a worn-out blade hole
The saw blade may come off if the blade hole is worn out. Replace such saw blade with new one. If the
new saw blade comes off even after replacement, the holder pin may be worn out. Replace the holder pin
with new one.
(5) Saw blade can be mounted in either direction, upward or downward
The Model CR 13VBY is convenient for cutting materials on the floor or near the wall, and also for plunge
cutting on plywood panels because the saw blade can be mounted in reverse.
Blade hole
<Plunge cutting on plywood panels>
Refer to the Handling Instructions
for detailed information about plunge
cutting on plywood panels.
(6) Swing cut mechanism
Cutting operation is selectable between smooth "straight cut mode" and efficient "swing cut mode" by
switching the change lever. When the swing cut mode is selected, the rear of the plunger (reciprocating shaft)
moves up and down along the slope of the counter weight in the gear case through the swing roller to
powerfully cut into a workpiece. The amount of rebound is less than the conventional orbital cutting, and soft
wood workpieces can be cut efficiently in this mode. Moreover, the swing cut mode is selectable even if the
saw blade is mounted in reverse. This is an innovative cutting mechanism. (Note that the swing cut mode is
not selectable if the saw blade is mounted in reverse for the Model CR 13VBY shipped to the U.S.A. and
Canada.)
--- 6 ---
<Structure of the swing cut mechanism>
Movement of the saw
blade mounted ordinarily
Counter weight
Swing roller mounted to
the rear of the plunger
Slant when the saw blade
is mounted ordinarily
Movement of the saw
blade mounted in reverse
Slant when the saw blade
is mounted in reverse
(7) Dust-and water-resistant triple-sealing construction
The Model CR 13VBY has a triple-sealing construction to protect from a large amount of dust generated when
cutting construction materials such as autoclaved lightweight concrete panels and also from waste water when
cutting pipes.
Dust-resistant felt ring
It prevents dust from entering by way of the plunger (reciprocating shaft).
Dust-and water-resistant seal ring (made of heat-resistant rubber)
It prevents dust and waste water from entering by way of the plunger (reciprocating shaft).
Dust- and water-resistant seal sleeve (made of heat-resistant rubber)
It prevents dust and waste water from entering by way of the gear case.
1
2
3
Plunger
Seal sleeve
Seal ring
Felt ring
< Triple-sealiing construction >
--- 7 ---
(8) Comfortable double-molded (elastomer and plastic) handle
The handle is slip-resistant and comfortably fits in the hand thanks to the double-molded construction
(elastomer and glassfiber reinforced polycarbonate). You can see the excellence especially when you operate
the Model CR 13VBY wearing working gloves.
(9) Durable double-molded (elastomer and plastic) front cover
The front cover is durable, heat-resistant and easy to operate thanks to the double-molded construction
(glassfiber reinforced polycarbonate at the front cover main body and elastomer at the front grip). The front
grip is far easier to hold than that of the former Model CR 13VA thanks to the new slender and comfortable
shape and slip-resistant elastomer for safer operation.
Former Model CR 13VA
Model CR 13VBY
--- 8 ---
5. SPECIFICATIONS
Max. cutting size Steel pipe: Outer diameter 130 mm (5")
Wood: Thickness 300 mm
5" (for the U.S.A. and Canada)
Mild steel plate: Thickness 19 mm (3/4")
Power source
AC single phase 50 or 60 Hz
Type of switch
Enclosure
Type of motor
Full load current
Weight
Stroke
Number of strokes
Max. output (reference)
Power consumption
Single-phase series commutator motor
Variable-speed trigger switch
Blade No. 341
••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
1
No. 132 (For the U.S.A. and Canada)
••••••••••••••••••••••••••••••••••••••••••••••••••
1
Plastic case
•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••
1
Net
•••••••••••••••••••
4.4 kg (without cord)
Gross
•••••••••••••••
7.4 kg
32 mm (1-1/4")
1,450 W
1,300 W (For the U.S.A. and Canada)
1,150 W
1,370 W (For the U.S.A. and Canada)
110 V
•••••••••••••••••••••••••
11 A
120 V
•••••••••••••••••••••••••
12 A
220 V
•••••••••••••••••••••••••
5.5 A
230 V
•••••••••••••••••••••••••
5.3 A
240 V
•••••••••••••••••••••••••
5.0 A
Packaging
No load
•••••••••••••••••••
0 to 3,000 min
-1
{strokes/min.}
Full load
••••••••••••••••••
2,450 min
-1
{strokes/min.} [at the max. speed (dial setting 5)]
2,040 min
-1
{strokes/min.} (for the U.S.A. and Canada) [dial setting 5]
Standard accessories
Capacity
5-1. Specifications
Housing
••••••••••••••••••••••••••••••••
Nylon resin
Handle
••••••••••••••••••••••••••••••••••
Polycarbonate resin and elastomer
Front cover
•••••••••••••••••••••••••••
Polycarbonate resin and elastomer
Gear cover and inner cover
••••
Die-cast aluminum alloy
Plastic case (Packed in a corrugated cardboard box)
Cord length
2.5 m (8.2 ft.)
Dimensions
465 mm in length, 167 mm in height and 103 mm in width
--- 9 ---
5-2. Optional Accessories
(a) High-speed steel blades
For cutting and roughing lumber
Blade No. Uses Thickness (mm)
For cutting steel pipes less than 105 mm in outer diameter 2.5 --- 6
No. 1
No. 3
No. 96
No. 95
No. 9
No. 8
No. 5
No. 4
No. 2
For cutting steel pipes less than 30 mm in outer diameter
For cutting steel pipes less than 30 mm in outer diameter
For cutting and roughing lumber
For cutting vinyl chloride pipes less than 105 mm in outer
diameter
For cutting and roughing lumber
For cutting steel pipes less than 130 mm in outer diameter
For cutting steel and stainless pipes less than 105 mm in
outer diameter
For cutting steel and stainless pipes less than 30 mm in
outer diameter
2.5 --- 6
50 --- 70
2.5 --- 6
Below 2.5
Below 2.5
Below 3.5
Below 30
Below 50
2.5 --- 15
The cutting speed of the Model CR 13VBY is substantially higher than that of the current model. However, the
conventional high-speed steel blades may be easily broken in heavy applications such as house demolition. To
cope with this problem, the bimetal blades shown in the following table are provided as optional accessories. The
bimetal blades are tough and rarely break since they are made of two different types of steels by electron-beam
welding. A very hard steel called "DM05" (JIS SKH51 or equivalent molybdenum containing high-speed steel) or
"Matrix II" (JIS SKH56 or equivalent cobalt containing high-speed steel) is used at the cutting edges, and a flexible
spring steel is used for the blade main body. Thus the bimetal blades are remarkably stronger than the
conventional high-speed steel blades.
(b) Bimetal blades
Blade No. Uses
Thickness (mm)
2.5 --- 6
2.5 --- 6
For cutting steel and stainless pipes less than 60 mm in outer diameter
No. 101
For cutting steel and stainless pipes less than 60 mm in outer diameter
No. 103
For cutting steel and stainless pipes less than 130 mm in outer diameter
No. 102
For cutting steel and stainless pipes less than 130 mm in outer diameter
No. 104
For cutting steel and stainless pipes less than 60 mm in outer diameter
No. 107
For cutting steel and stainless pipes less than 130 mm in outer diameter
No. 110
For cutting steel and stainless pipes less than 60 mm in outer diameter
No. 109
2.5 --- 6
2.5 --- 6
Below 3.5
2.5 --- 6
2.5 --- 6
--- 10 ---
Blade No. Uses
Thickness (mm)
For cutting steel and stainless pipes less than 130 mm in outer diameter
No. 108
For cutting and roughing lumberNo. 121
All purposeNo. 131
Below 3.5
300
All purpose
No. 132
The latest curved blade can offer higher cutting speed and longer life thanks to the strong bimetal material and the
curved shape that properly fits workpieces. The curved blade is also available as an optional accessory.
(c) Curved blade
* The curved blade is not available in some areas.
* Do not use the curved blade for the swing cut operation. Otherwise, the blade may be broken or the Model
CR 13VBY may be damaged.
Blade No. Uses
Thickness (mm)
For cutting steel and stainless pipes less than 60 mm in outer diameter
No. 341
2.5 -
--
6
Below 3.5
(d) Selection of blades for other materials
Material to be cut
Material quality
2.5 --- 9
No. 1, 2, 101, 102, 103, 104,
105, 106, 131, 132
No. 3, 107, 108
Iron plate
Synthetic resin
Nonferrous metal
Mild steel plate
Aluminum
Copper
Brass
Vinyl chloride resin
Acrylic resin
Phenol resin
Melamine resin
Thickness (mm)
Below 5
No. 3, 107, 108
No. 1, 2, 101, 102, 103, 104,
105, 106, 131, 132
5 --- 20
5 --- 30
10 --- 50
5 --- 30
10 --- 60
No. 3, 5, 8, 105, 106, 107, 108
No. 1, 2, 4, 101, 102, 103, 104,
131, 132
No. 3, 5, 8, 105, 106, 107, 108
No. 1, 2, 4, 101, 102, 103, 104,
131, 132
Blade No.
--- 11 ---
Maker
HITACHI
Model CR 13VA
CR 13V
Voltage V
inch
/min.
A
inch
lbs.
dB
dB
Stroke
No-load speed
Max. output
Dimensions
Net weight
Vibration
No-load noise
Features
L
H
W
Variable speed
Toolless blade
Toolless base
Handle
Sealing
construction
CR 13VBY
Rated current
W
Front cover
120
12
1-1/4
1,300
18.3
6.6
4.1
9.7
119
93.0
Plastic and
rubber
Triple-seal
0 -- 3,000
T&D
Swing
Plastic and
rubber
120
11
1-1/4
1,070
18.1
6.5
4.1
8.8
126
91.0
Plastic and
rubber
Triple-seal
0 -- 2,800
T&D
Swing
Plastic and
rubber
120
10
1-1/8
1,030
17.1
6.5
3.7
7.3
124
89.0
Rubber
Triple-seal
0 -- 2,800
T
Plastic
J
115
15
1-1/4
19.1
7.1
3.9
9.7
121
Rubber
Double-seal
0 -- 2,800
T&D
Orbital
Plastic and
rubber
M
120
13
1-1/4
18.8
9.8
119
Rubber
Double-seal
0 -- 3,000
T
Orbital
Plastic and
rubber
92.3
1-1/4
0 -- 2,700
19.6
6.9
3.9
9.7
123
91.7
T&D
Rubber
Plastic
Double-seal
Orbital
Cutting action
B
Maker
HITACHI
Model CR 13VA
CR 13V
Voltage V
mm
/min.
W
mm
kg
dB
dB
Stroke
No-load speed
Max. output
Dimensions
Net weight
Vibration
No-load noise
Features
L
H
W
Variable speed
Toolless blade
Toolless base
Handle
Sealing
construction
CR 13VBY
Power input
W
Front cover
230
1,150
32
1,450
465
167
103
4.4
119
93.0
Plastic and
rubber
Triple-seal
0 -- 3,000
T&D
Swing
Plastic and
rubber
230
1,150
32
1,180
462
165
106
4.0
126
91.0
Plastic and
rubber
Triple-seal
0 -- 2,800
T&D
Swing
Plastic and
rubber
230
1,010
29
1,030
435
165
95
3.3
124
89.0
Rubber
Triple-seal
0 -- 2,800
T
Plastic
J
32
485
181
99
4.4
121
Rubber
Double-seal
0 -- 2,800
T&D
Orbital
Plastic and
rubber
M
230
32
476
4.4
119
Rubber
Double-seal
0 -- 3,000
T
Orbital
Plastic and
rubber
92.3
32
0 -- 2,700
499
175
98
4.4
123
91.7
T&D
Rubber
Plastic
Double-seal
Orbital
Cutting action
B
1,100
6. COMPARISONS WITH SIMILAR PRODUCTS
6-1. For the U.S.A. Market
6-2. For European Market
*T: Variable speed control with trigger D: Variable speed control with dial
--- 12 ---
0
10
20
30
5
CR 13VBY
J
M
B
15
25
CR 13VA
7. COMPARISONS IN VIBRATION LEVEL
Following test data should be used for reference purposes since the vibration level may vary depending on the
operating conditions such as the cutting function, pressing force, type of blade, etc. The graph shows the triaxial
composite vibration levels when cutting plywood panels 19 mm in thickness.
Triaxial composite vibration levels (m/s
2
)
--- 13 ---
8. COMPARISONS IN CUTTING TIME
Following test data should be used for reference purposes. The graph shows the time (in sec.) required for cutting
a piece of each material. (*Note that the swing cut mode is not selectable if the saw blade is mounted in reverse
for the Model CR 13VBY shipped to the U.S.A. and Canada.)
8-1. Cutting Steel Pipes
A steel pipe 42 mm (1.65") in inner diameter
and 3.2 mm (0.13") in thickness
Pressing force about
5 kgf (11 lbs.)
Blade No. 103
for cutting steel pipes
Swing cutting
Swing cutting
Orbital cutting
Orbital cutting
Orbital cutting
Swing or orbital cutting
Straight cutting
CR 13VBY
CR 13VA
J
M
B
0
20
15
105
Cutting time (sec./cut)
--- 14 ---
SPF 2 x 10
Pressing force about
5 kgf (11 lbs.)
8-2. Cutting Wood
Blade No. 121
for cutting wood
Swing cutting
Swing cutting
Orbital cutting
Orbital cutting
Orbital cutting
Swing or orbital cutting
Straight cutting
CR 13VBY
CR 13VA
J
M
B
0
10
6
428
Cutting time (sec./cut)
--- 15 ---
8-3. Cutting Steel Pipes with Reversely Mounted Blade
Pressing force
about 5 kgf (11 lbs.)
Blade No. 103
for cutting steel pipes
A steel pipe 42 mm (1.65") in inner
diameter and 3.2 mm (0.13") in thickness
Swing cutting
Swing cutting
Orbital cutting
Orbital cutting
Orbital cutting
Swing or orbital cutting
Straight cutting
CR 13VBY
CR 13VA
J
M
B
0
50
30
2010 40
Cutting time (sec./cut)
--- 16 ---
8-4. Cutting Wood with Reversely Mounted Blade
SPF 2 x 10
Pressing force
about 5 kgf (11 lbs.)
Blade No. 121
for cutting wood
Swing cutting
Swing cutting
Orbital cutting
Orbital cutting
Orbital cutting
Swing or orbital cutting
Straight cutting
CR 13VBY
CR 13VA
J
M
B
0
25
15
10520
Cutting time (sec./cut)
--- 17 ---
8-5. Cutting Operation for Long Blade Life
The service life of a saw blade may vary depending on the operating conditions such as the type of cutting
operation, pressing force, etc. Observing the following instructions can lengthen the service life of a saw blade, for
reference.
Heat generated in the cutting operation can significantly affect the service life of the saw blade. Continued cutting
operation with the cutting edge of the saw blade heated to red hot can decrease the hardness of the saw blade
because the cutting edge is annealed. The saw blade is then worn out in a short time and nothing can be cut.
The merits of moving the saber saw up and down are described below.
The seesaw motion of the saw blade can minimize heating.
The effective cutting length of the blade is longer than that of an ordinary cutting operation. Thus, the service
life of the saw blade can be lengthened and the cutting speed can be faster. Cutting wood in the same
manner can also make the cutting speed faster.
1
2
Application of undue force to the workpiece during the cutting operation can heat up the cutting edge of the saw
blade and the number of strokes can decrease, causing reduction of speed. Appropriate pressing force is about
4 to 5 kgf.
Do not apply undue force to the workpiece
2
1 Move the saber saw handle up and down repeatedly during the cutting operation
/