Hitachi G 10SF3 Technical Data And Service Manual
POWER TOOLS
TECHNICAL DATA
AND
SERVICE MANUAL
DISC GRINDER
G 10SF3
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
LIST No. E243
Aug. 2001
G
MODEL
G 10SF3
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
MAKITA
9523NB
C
Page
CONTENTS
1. PRODUCT NAME ........................................................................................................................... 1
2. MARKETING OBJECTIVE .............................................................................................................1
3. APPLICATIONS ..............................................................................................................................1
4. SELLING POINTS ..........................................................................................................................1
5. SPECIFICATIONS ..........................................................................................................................3
6. COMPARISONS WITH SIMILAR PRODUCTS .............................................................................. 4
6-1. Specification Comparisons ............................................................................................................ 4
6-2. Comparisons in Torque vs. Rotation Speed and Stator Coil Temperature Rise ............................ 5
7. PRECAUTIONS IN SALES PROMOTION .....................................................................................6
7-1. Handling Instructions ..................................................................................................................... 6
7-2. Caution Plate (For China only) ...................................................................................................... 6
7-3. Precautions on Usage ................................................................................................................... 6
8. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY ............................................................ 7
8-1. Disassembly .................................................................................................................................. 7
8-2. Reassembly ................................................................................................................................... 9
8-3. Lubrication Points and Types of Lubricant .................................................................................... 11
8-4. Tightening Torque ......................................................................................................................... 11
8-5. Wiring Diagram ............................................................................................................................. 11
8-6. Insulation Tests ............................................................................................................................ 12
8-7. No-load Current Value ................................................................................................................. 12
9. STANDARD REPAIR TIME (UNIT) SCHEDULES .......................................................................13
Assembly Diagram for G 10SF3
--- 1 ---
1. PRODUCT NAME
Hitachi Disc Grinder, Model G 10SF3 [100 mm (4")]
2. MARKETING OBJECTIVE
The current Model G 10SF2 has been favorably accepted in the compact disc grinder market in China. However,
recent Chinese market is fiercely competitive due to a price war. To address the severe situation, we have
developed a new disc grinder Model G 10SF3 that is comprised of parts manufactured in China. The Model
G 10SF3 is more powerful than the current Model G 10SF2 thanks to the improved cooling efficiency of the motor.
The components of the Model G 10SF3 are the same as those of the Model G 10SF2 except the enclosure and
the wiring components.
3. APPLICATIONS
Removal of casting fin and finishing of various types of steel, bronze, aluminum, and other metallic materials
and castings
Grinding of welded sections, or sections cut by acetylene torch
Grinding of slate, brick, marble and similar materials
4. SELLING POINTS
High power input: 560 W
(G 10SF2 and C: 540 W)
New vaned dust seal efficiently
prevents dust from entering the ball
bearing on the commutator side.
Easy-to-use snap switch
Excellent wear resistance of armature coil:
2 times higher than the Model G 10SF2
1.7 times higher than C
--- 2 ---
Excellent wear resistance of armature coil
Wear resistance of the armature coil is greatly increased thanks to the smaller air vent to minimize sucking
dust and fine gravel into the machine.
G 10SF3
(Comparison of wear resistance of armature coils when dust and fine gravel are sucked into the machines)
(Comparison of air vents near the commutator)
Smaller air vent is
provided near the
commutator.
Two air vents are provided
near the commutator.
G 10SF2
100
40
100
G10SF3
G10SF2
50
C
10 13.5
0
60
--- 3 ---
Depressed
center
wheel
5. SPECIFICATIONS
4,300 m/min (14,100 ft/min, 72 m/s)
Dimensions
Model
Item
O.D. 100 mm (4") x Thickness 4 mm (5/32")
x I.D. 16 mm (5/8")
Offset amount: 4 mm (5/32")
Max. peripheral speed
G 10SF3
AC single phase 50 or 60 Hz
Power source
Snap switch
1.4 kg (3.09 lbs.)
2.4 kg (5.3 lbs.)
Corrugated cardboard box
No-load speed
Type of motor
Enclosure
Type of switch
Weight Net: *
1
Gross:
Packaging
Standard accessories*
2
Depressed center wheel [Outer dia.100 mm (4") ] ................. 1
Wrench ................................................................................... 1
Voltage, current and power input
12,000/min
AC single phase commutator motor
Housing tail cover
Gear cover
Inner cover packing gland
Glassfiber reinforced polycarbonate resin (Green)
Aluminum alloy die casting (Metallic silver)
Aluminum alloy die casting
Voltage (V)
Current (A)
Power input (W)
220
560
2.7
*1 : Net weight excludes cord, depressed center wheel, wheel nut, wheel washer and wheel guard.
*2 : Standard accessories are subject to change without prior notice.
--- 4 ---
HITACHI
G 10SF3
100
12,000
560
380
640
254
67
60
200
1.4
(1.5)
Snap
Maker
Model
Wheel diameter mm
No-load speed /min
Power input W
Power output W
Max. power output W
L mm
Dimensions W mm
H mm
P mm
Weight * kg
(Actual weight)
Type of switch
6. COMPARISONS WITH SIMILAR PRODUCTS
6-1. Specification Comparisons
G 10SF2
100
12,000
540
330
610
254
67
60
200
1.4
(1.5)
Snap
100
11,000
540
290
620
256
81
70
195
1.4
(1.5)
Slide
C
L
H
W
P: Perimeter
* Weight excludes cord, depressed center wheel, wheel nut, wheel washer and wheel guard.
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