TECHNICAL DATA
AND
SERVICE MANUAL
DISC GRINDER
G 18SCY, G 18UAY, G 18SEY, G 18UBY,
G 23SCY, G 23UAY, G 23SEY, G 23UBY
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
LIST Nos. G 18SCY: E283, G 18UAY: E285,
G 18SEY: E284, G 18UBY: E286,
G 23SCY: E279, G 23UAY: E281,
G 23SEY: E280, G 23UBY: E282
Oct. 2006
G
MODELS
G 18SCY, G 18UAY, G 18SEY, G 18UBY,
G 23SCY, G 23UAY, G 23SEY, G 23UBY
Hitachi
Power Tools
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
B BOSCH
GWS24-180JBV,
GWS24-230JBV,
GWS26-180JBV,
GWS26-230JBV
Page
CONTENTS
1. PRODUCT NAME ............................................................................................................................. 1
2. MARKETING OBJECTIVE ............................................................................................................... 1
3. APPLICATIONS ................................................................................................................................ 1
4. SELLING POINTS ............................................................................................................................ 2
4-1. Vibration-absorbing Main Handle and Side Handle ...........................................................................2
4-2. Prolonged Service Life of the Carbon Brushes thanks to the New Construction ............................... 3
4-3. Low Gear Sound (Roughness) ..........................................................................................................3
4-4. Class-top Overload Durability ............................................................................................................4
4-5. Soft Grip Handle ................................................................................................................................5
4-6. Dust-proof Ball Bearing Thanks to the Labyrinth Construction ..........................................................5
4-7. Wheel Guard Angle-Adjustable without Using a Tool ........................................................................ 5
5. SPECIFICATIONS ............................................................................................................................ 6
6. COMPARISONS WITH SIMILAR PRODUCTS ................................................................................ 8
6-1. Specification Comparisons ................................................................................................................8
6-2. Practical Test Data ........................................................................................................................... 10
7. PRECAUTIONS IN SALES PROMOTION ...................................................................................... 11
7-1. Handling Instructions ....................................................................................................................... 11
7-2. Caution on Name Plate .................................................................................................................... 11
7-3. Precautions on Usage .....................................................................................................................12
7-4. Measures taken when the wheel nut cannot be removed ............................................................... 12
8. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY ............................................................ 13
8-1. Disassembly ....................................................................................................................................13
8-2. Reassembly .....................................................................................................................................15
8-3. Lubrication Points and Types of Lubricant .......................................................................................17
8-4. Tightening Torque ............................................................................................................................ 17
8-5. Wiring Diagram ................................................................................................................................18
8-6. Insulation Tests ................................................................................................................................18
8-7. No-load Current Value .....................................................................................................................18
9. STANDARD REPAIR TIME (UNIT) SCHEDULES ......................................................................... 19
Assembly Diagram for G 18SCY
Assembly Diagram for G 18UAY
Assembly Diagram for G 18SEY
Assembly Diagram for G 18UBY
Assembly Diagram for G 23SCY
Assembly Diagram for G 23UAY
Assembly Diagram for G 23SEY
Assembly Diagram for G 23UBY
--- 1 ---
1. PRODUCT NAME
1) Hitachi 180 mm (7") Disc Grinder, Model G 18SCY
2) Hitachi 180 mm (7") Disc Grinder, Model G 18UAY (With soft start)
3) Hitachi 180 mm (7") Disc Grinder, Model G 18SEY
4) Hitachi 180 mm (7") Disc Grinder, Model G 18UBY (With soft start)
5) Hitachi 230 mm (9") Disc Grinder, Model G 23SCY
6) Hitachi 230 mm (9") Disc Grinder, Model G 23UAY (With soft start)
7) Hitachi 230 mm (9") Disc Grinder, Model G 23SEY
8) Hitachi 230 mm (9") Disc Grinder, Model G 23UBY (With soft start)
2. MARKETING OBJECTIVE
There is an increasing demand for a disc grinder equipped with a vibration absorbing mechanism to comply with
the EU Physical Agents (Vibration) Directive (enforced in July 2005) in European markets. To meet the demand,
we introduce the new 180/230 mm disc grinders Models G 18SCY, G 18SEY, G 23SCY and G 23SEY. They are
low-vibration disc grinders thanks to the vibration-absorbing side handle and main handle (switch handle). In
addition, we introduce the new 180/230 mm disc grinders Models G 18UAY, G 18UBY, G 23UAY and G 23UBY
equipped with the soft-start function.
The key features of the new G 23SCY series are as follows (comparison with the current G 23SC3 series):
1) Vibration absorbing main handle and side handle
2) Prolonged service life of the carbon brushes
3) Class-top overload durability
4) Low gear sound
5) Aggressive design
Vigorous sales promotion of Hitachi disc grinders is anticipated with the introduction of the new G 23SCY series.
3. APPLICATIONS
Deburring diecast products and finishing iron, bronze, aluminum and diecast products
Finishing welds and torch-cut surfaces
Cutting soft steel materials
Grooving and cutting concrete and other stone materials
--- 2 ---
100
20
0
G 18SCY/G 18SEY
G 18UAY/G 18UBY
G 23SCY/G 23SEY
G 23UAY/G 23UBY
B
120
40
G 18SE2/G 18SG2
G 18UA2/G 18UB2
G 23SC3/G 23SE2
G 23UA2/G 23UB2
60
80
Single axis vibration ratio (%)
Side handle
Switch handle
30% reduction
Class-top overload durability:
1.15 times more durable than B
4. SELLING POINTS
Prolonged service life of the carbon brushes thanks
to the new motor and new carbon brush material:
1.5 times longer than the current models
Vibration-absorbing main handle
Low gear sound
Aggressive design
Soft grip handle
Tool-less wheel guard
4-1. Vibration-absorbing Main Handle and Side Handle
The G 23SCY series are equipped with the vibration-absorbing side
handle in the same manner as the conventional models. In addition,
the housing is coupled to the main handle (switch handle) through
the moving joint mechanism, and handle dampers are provided
between them. As a result, the vibration level of the switch handle is
30% lower than the current G 23SC3 series. The G 23SCY series
are more user-friendly and able to reduce the operator's burden
caused by vibration. Figure 1 (a) shows the result of vibration test
performed according to EN-50144 (Single axis vibration).
Fig. 1
(b)
(a)
Housing
Moving joint mechanism
Switch handle
Handle damper
--- 3 ---
Fig. 3
Fig. 2
4-2. Prolonged Service Life of the Carbon Brushes thanks to the New Construction
The service life of the carbon brushes is 1.5 times longer than the competitors thanks to the new material and the
suitable motor specifications. The service life of the carbon brushes is 1.5 times longer than the G 23SC3 series
and competitor B.
4-3. Low Gear Sound (Roughness)
In addition to the method of expressing loudness of the sound generated from a tool by a sound pressure level or
a power level, loudness of the sound can be expressed by the following four parameters to quantitatively
represent how the operator feels the sound psychologically. In the gear structure of the G 23SCY series, the
coupling damper absorbs the impact sound generated by meshing between the gear and the pinion. Thanks to
this new structure, the impact sound of the gear is reduced and the harsh gear sound during no-load operation is
60% lower than the current G 23SC3 series (average roughness comparison) to reduce the operator's
psychological burden.
<Tone parameters>
Loudness: Quantity to evaluate loudness of sound when a human being hears.
Sharpness: Quantity to evaluate sharpness of sound.
Fluctuation: Quantity to evaluate the feeling when sound fluctuates slowly.
Roughness: Quantity to evaluate the feeling when sound fluctuates quickly. It is evaluated as an index to
express the gear sound quantitatively (unit: asper).
Figure 2 shows the result of vibration test performed according to EN-60745 (Tri-axial vibration).
1
2
3
4
100
20
0
G 18SCY/G 18SEY
G 18UAY/G 18UBY
G 23SCY/G 23SEY
G 23UAY/G 23UBY
B
120
40
G 18SE2/G 18SG2
G 18UA2/G 18UB2
G 23SC3/G 23SE2
G 23UA2/G 23UB2
60
80
Tri-axial vibration ratio (%)
Switch handle
Side handle
100
50
0
G 18SCY/G 18SEY
G 18UAY/G 18UBY
G 23SCY/G 23SEY
G 23UAY/G 23UBY
B
150 200
G 18SE2/G 18SG2
G 18UA2/G 18UB2
G 23SC3/G 23SE2
G 23UA2/G 23UB2
--- 4 ---
100
50
0
G 18SCY/G 18SEY
G 18UAY/G 18UBY
G 23SCY/G 23SEY
G 23UAY/G 23UBY
B
150
G 18SE2/G 18SG2
G 18UA2/G 18UB2
G 23SC3/G 23SE2
G 23UA2/G 23UB2
1
2
G 18SCY/G 18SEY
G 18UAY/G 18UBY
G 23SCY/G 23SEY
G 23UAY/G 23UBY
B
3
G 18SE2/G 18SG2
G 18UA2/G 18UB2
G 23SC3/G 23SE2
G 23UA2/G 23UB2
4
60% reduction
Ave. 1.8
Ave. 2.0
Ave. 0.7
Roughness (asper)
Fig. 4
Fig. 5
4-4. Class-top Overload Durability
The stator coil of the G 23SCY series is divided into two parts in order to make the surface area of the the stator
coil 1.5 times larger than the conventional models for better cooling efficiency. Thus the temperature rise of the
stator coil during overload operation is 25% lower than the current G 23SC3 series. It is the greatest overload
durability in the class. Figure 5 shows the comparison of overload durability when the stator coil temperature rise
is 200û K using the Model G 23SCY as a reference.
As is evident form this, the G 23SCY series are superior to the competitors in overload durability.
(b)(a)
Sectional view of the stator coil
(b)(a)
Spindle
Coupling
Gear
Coupling damper
--- 5 ---
4-5. Soft Grip Handle
The double-layer molded handle consists of a nylon resin base covered with a soft plastic layer to ensure a soft
touch and firm, non-slip grip of the handles.
4-6. Dust-proof Ball Bearing Thanks to the Labyrinth Construction
The ball bearing retainers at both sides of the armature have a labyrinth construction to make the ball bearings
dust-proof.
4-7. Wheel Guard Angle-Adjustable without Using a Tool
By following the procedure described below, the newly developed tool-less wheel guard can be adjusted to a
desired angle without using any tool.
[Installation and adjustment of the wheel guard]
Set the Wheel Guard Ass'y [40] <40> on the Packing Gland [31] <31>.
With the Lever [35] <35> closed, tighten the Bolt M8 x 22 [36] <36> until the wheel guard is locked in position.
Open the Lever [35] <35> for angle adjustment of the wheel guard. (If the wheel guard is difficult to turn, loosen
the Bolt M8 x 22 [36] <36> and readjust the wheel guard.)
Be sure to close the Lever [35] <35> after finishing adjustment before starting operation.
When the Lever [35] <35> becomes dull in motion, lubricate the sliding area between the Set Piece [38] <38> and
the Lever [35] <35>.
Fig. 8
Fig. 6 Fig. 7
Labyrinth
Bearing cover (A)
Armature shaft
Ball bearing (6301DDCM)
Fan
Labyrinth
Bearing bushing
Commutator
Ball bearing
(6000VVCM)
Dust seal
Housing
Rubber ring (A)
--- 6 ---
Depressed-
center wheels
5. SPECIFICATIONS
80 m/s (15,800 ft/min)
Dimensions
Model
Item
O.D. 180 mm (7")
x Thickness 6 mm (1/4")
x I.D. 22.2 mm (7/8")
O.D. 230 mm (9")
x Thickness 6 mm (1/4")
x I.D. 22.2 mm (7/8")
Max. practical
peripheral speed
Type
G 18SCY/G 18UAY G 23SCY/G 23UAY
AC single phase 50 or 60 Hz
Power source
Trigger switch
5.1 kg (11.2 lbs.)
8.3 kg (18.3 lbs.)
Corrugated cardboard box
No-load speed
Type of motor
Enclosure
Type of switch
Net weight
*4
(Main body)
Gross weight
Type of packing
Standard accessories
Depressed-center wheel 180 mm (7")
(Code No. 316824) ...................... 1
*5
Side handle (Code No. 937981) .. 1
Wrench (Code No. 987913Z) ....... 1
Vol t age and power input
*2
AC single phase commutator motor
Housing (Green)
Handle (Black)
Gear cover, packing gland .................... Aluminum alloy diecasting
........................ Polyamide resin with glassfiber
Depressed-center wheel 230 mm (9")
(Code No. 316825) ...................... 1
*5
Side handle (Code No. 937981) .. 1
Wrench (Code No. 937913Z) ....... 1
Wheet nut (B) (Code No. 937917Z)
..................................................... 1
*5
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
Voltage (V) Current (A) Power input (W)
110
230
220
2,400
2,400
1,700
21.8
12.6
15.0
*1
: For the U.S.A.: 5/8-11 UNC
*2
: Be sure to check the nameplate on product as it is subject to change by areas.
*3
: For the U.S.A.: 6,000/min.
*4
: Net weight excludes cord, side handle, depressed-center wheel, wheel nut, wheel washer and wheel guard.
*5
: Standard accessories may vary depending on market areas.
Spindle thread
240
2,400
11.0
A, 24, R, B
M14 x 2
*1
8,500/min
*3
6,600/min
*3
120
10.0
2,400
--- 7 ---
Depressed-
center wheels
80 m/s (15,800 ft/min)
Dimensions
Model
Item
O.D. 180 mm (7")
x Thickness 6 mm (1/4")
x I.D. 22.2 mm (7/8")
O.D. 230 mm (9")
x Thickness 6 mm (1/4")
x I.D. 22.2 mm (7/8")
Max. practical
peripheral speed
Type
G 18SEY/G 18UBY G 23SEY/G 23UBY
AC single phase 50 or 60 Hz
Power source
Trigger switch
5.1 kg (11.2 lbs.)
8.3 kg (18.3 lbs.)
Corrugated cardboard box
No-load speed
Type of motor
Enclosure
Type of switch
Net weight
*2
(Main body)
Gross weight
Type of packing
Standard accessories
Depressed-center wheel 180 mm (7")
(Code No. 316824) ...................... 1
*3
Side handle (Code No. 937981) .. 1
Wrench (Code No. 987913Z) .......1
Voltage and power input
*1
AC single phase commutator motor
Housing (Black)
Handle (Green)
Gear cover, packing gland .................... Aluminum alloy diecasting
........................ Polyamide resin with glassfiber
Depressed-center wheel 230 mm (9")
(Code No. 316825) ...................... 1
*3
Side handle (Code No. 937981) .. 1
Wrench (Code No. 937913Z) .......1
Wheet nut (B) (Code No. 937917Z)
..................................................... 1
*3
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
Voltage (V) Current (A) Power input (W)
110
240
2,400
2,400
2,600
21.8
10.0
12.0
*1
: Be sure to check the nameplate on product as it is subject to change by areas.
*2
: Net weight excludes cord, side handle, depressed-center wheel, wheel nut, wheel washer and wheel guard.
*3
: Standard accessories may vary depending on market areas.
Spindle thread
A, 24, R, B
M14 x 2
8,500/min 6,600/min
230
--- 8 ---
Maker
Model name
Capacity:
Depressed-center wheel dia. (mm)
Power input *
1
(W)
Power output *
1
(W)
Max. power output *
1
(W)
No-load speed (/min)
No-load sound pressure level (dB (A))
Service life of carbon brushes *
2
(hr)
Weight *
3
(kg)
(Actual weight) (kg)
Dimensions L mm (inch)
H mm (inch)
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
HITACHI
G 18SCY
G 18UAY
180
(7")
2,400
1,550
4,600
8,500
89
250
5.1 (11.2 lbs.)
5.2 (11.5 lbs.)
500 (19-11/16)
83 (3-9/32)
Maker
Model name
Capacity:
Depressed-center wheel dia. (mm)
Power input *
1
(W)
Power output *
1
(W)
Max. power output *
1
(W)
No-load speed (/min)
No-load sound pressure level (dB (A))
Service life of carbon brushes *
2
(hr)
Weight *
3
(kg)
(Actual weight) (kg)
Dimensions L mm (inch)
H mm (inch)
6. COMPARISONS WITH SIMILAR PRODUCTS
6-1. Specification Comparisons
G 18SE3
G 18UA2
180
(7")
2,300
1,500
4,600
8,500
89
175
5.0 (11.0 lbs.)
5.2 (11.5 lbs.)
478 (18-13/16)
83 (3-9/32)
180
(7")
2,400
1,420
4,200
8,500
92
160
5.1 (11.0 lbs.)
5.2 (11.5 lbs.)
510 (20-5/64)
92 (3-5/8)
*1 : Depends on market
*2 : Service life of carbon brushes in the continuous rated load test
*3 : Weight without cord, side handle, depressed-center wheel,
wheel nut, wheel washer and wheel guard
B
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
HITACHI
G 23SCY
G 23UAY
230
(9")
2,400
1,550
4,600
6,600
89
250
5.1 (11.2 lbs.)
5.2 (11.5 lbs.)
500 (19-11/16)
83 (3-9/32)
G 23SC3
G 23UA2
230
(9")
2,300
1,500
4,600
6,600
89
175
5.0 (11.0 lbs.)
5.2 (11.5 lbs.)
478 (18-13/16)
83 (3-9/32)
230
(9")
2,400
1,420
4,200
6,500
92
160
5.1 (11.0 lbs.)
5.2 (11.5 lbs.)
510 (20-5/64)
92 (3-5/8)
B
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
--- 9 ---
Maker
Model name
Capacity:
Depressed-center wheel dia. (mm)
Power input *
1
(W)
Power output *
1
(W)
Max. power output *
1
(W)
No-load speed (/min)
No-load sound pressure level (dB (A))
Service life of carbon brushes *
2
(hr)
Weight *
3
(kg)
(Actual weight) (kg)
Dimensions L mm (inch)
H mm (inch)
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
G 18SEY
G 18UBY
180
(7")
2,600
1,710
4,600
8,500
89
250
5.1 (11.2 lbs.)
5.2 (11.5 lbs.)
500 (19-11/16)
83 (3-9/32)
HITACHI
Maker
Model name
Capacity:
Depressed-center wheel dia. (mm)
Power input *
1
(W)
Power output *
1
(W)
Max. power output *
1
(W)
No-load speed (/min)
No-load sound pressure level (dB (A))
Service life of carbon brushes *
2
(hr)
Weight *
3
(kg)
(Actual weight) (kg)
Dimensions L mm (inch)
H mm (inch)
G 18SG2
G 18UB2
180
(7")
2,500
1,680
4,600
8,500
89
165
5.0 (11.0 lbs.)
5.2 (11.5 lbs.)
478 (18-13/16)
83 (3-9/32)
180
(7")
2,600
1,600
4,100
8,500
92
160
5.1 (11.0 lbs.)
5.2 (11.5 lbs.)
510 (20-5/64)
92 (3-5/8)
*1 : Depends on market
*2 : Service life of carbon brushes in the continuous rated load test
*3 : Weight without cord, side handle, depressed-center wheel,
wheel nut, wheel washer and wheel guard
B
HITACHI
G 23SEY
G 23UBY
230
(9")
2,600
1,710
4,600
6,600
89
250
5.1 (11.2 lbs.)
5.2 (11.5 lbs.)
500 (19-11/16)
83 (3-9/32)
G 23SE2
G 23UB2
230
(9")
2,500
1,680
4,600
6,600
89
165
5.0 (11.0 lbs.)
5.2 (11.5 lbs.)
478 (18-13/16)
83 (3-9/32)
230
(9")
2,600
1,600
4,100
6,500
92
160
5.1 (11.0 lbs.)
5.2 (11.5 lbs.)
510 (20-5/64)
92 (3-5/8)
B
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
--- 10 ---
Load
B
G 23SE2
G 23SCY
: Burn-out point
400
100
200
300
0
Stator coil temperature rise (K)
500
6-2. Practical Test Data
Comparison of temperature rise of stator coil section:
The graph below shows the relationship between load and temperature rise of the stator coil. The temperature
rise of the Model G 23SCY is the lowest among the competitive models. This means that the resistance to
overload usage of the Model G 23SCY is superior to other maker's models.
Fig. 9
--- 11 ---
7. PRECAUTIONS IN SALES PROMOTION
In the interest of promoting the safest and most efficient use of the Models G 18SCY, G 18UAY, G 18SEY,
G 18UBY, G 23SCY, G 23UAY, G 23SEY and G 23UBY Disc Grinders by all of our customers, it is very important
that at the time of sale, the salesperson carefully ensures that the buyer seriously recognizes the importance of
the contents of the Handling Instructions, and fully understands the meaning of the precautions listed on the
Name Plate.
7-1. Handling Instructions
Although every effort is made in each step of design, manufacture and inspection to provide protection against
safety hazards, the dangers inherent in the use of any electric power tool cannot be completely eliminated.
Accordingly, general precautions and suggestions for the use of electric power tools, and specific precautions and
suggestions for the use of the disc grinders are listed in the Handling Instructions to enhance the safe and efficient
use of the tool by the customer. Salespersons must be thoroughly familiar with the contents of the Handling
Instructions to be able to offer appropriate guidance to the customer during sales promotion.
7-2. Caution on Name Plate
Each tool is provided with a Name Plate which contains the following basic safety precautions in the use of the
tool.
CAUTION
Read thoroughly HANDLING INSTRUCTIONS before use.
(1) For U.K., Germany, Belgium, France, Netherlands, Austria, Spain, Italy, Finland, Norway and Switzerland
(2) For Australia and New Zealand
(3) For the U.S.A. and Canada
(4) For Taiwan
*G 23SCY For the U.S.A.: 6,600
For CAN: 6,600
*G 18SCY For the U.S.A.: 6,600
For CAN: 6,600
WARNING
To reduce the risk of injury, user must read and understand instruction manual.
Always use proper guards when grinding and wear eye protection.
Use only accessories rated at least * /min.
AVERTISSEMENT
Afin de reduire le risque de blessures, I'utilisateur doit lire et bien comprendre le mode d'emploi.
Utilisez toujours un outil muni d'un protecteur adequat et portez des lunettes on une visiere.
N'utilisez que des accessoires prevus pour au moins * /min.
--- 12 ---
7-3. Precautions on Usage
Never press the pushing button while the depressed-center wheel is rotating.
If the pushing button is pressed while the depressed-center wheel is rotating, the spindle will stop immediately.
In such a case, there is a danger that the wheel nut may be loosened so that the depressed-center wheel flies off
unexpectedly to cause possible serious injury.
7-4. Measures taken when the wheel nut cannot be removed
If the grinder is left without removing the wheel for a long time after operation, the threaded portions of the wheel
nut and the spindle may rust and the wheel nut cannot be removed. In such case, do not apply great force to the
wheel nut by turning with the attached wrench while pressing the spindle lock button. Otherwise, the spindle and
the gear may slip each other and the nut cannot be loosened. Hold the "A" portion of the spindle with a wrench so
that the spindle cannot be moved then loosen the wheel nut with the attached wrench (Fig. 10).
"A" portion
Fig. 10
--- 13 ---
Fig. 11
8. PRECAUTIONS IN DISASSEMBLY AND REASSEMBLY
The [Bold] numbers in the descriptions below correspond to the numbers in the Parts List and the exploded
assembly diagram for the Models G 23SCY, G 23SEY, G 18SCY AND G 18SEY, and the <Bold> numbers to
those in the Parts List and the exploded assembly diagram for the Models G 23UAY, G 18UAY, G 18UBY and
G 23UBY.
8-1. Disassembly
(1) Removal of the Armature [12] <12>
1. Open the Lever [35] <35>, loosen the Bolt M8 x 22 [36] <36> and remove the Wheel Guard Ass'y [40] <40>.
2. Loosen the Tapping Screw (W/Flange) D4 x 16 (Black) [50] <50>, and remove the Brush Cover [53] <53>.
3. Remove the two Carbon Brushes [51] <51> from the Brush Holder Set [52] <52>.
4. Remove the four Tapping Screws (W/Flange) D5 x 35 (Black) [2] <2>. The Armature [12] <12> can then be
taken out simultaneously with the Gear Cover Ass'y [5] <5>, Packing Gland [31] <31> and related parts.
5. Remove the four Hex. Socket Hd. Bolts (W/Flange) M5 x 16 [32] <32>.
6. After removing the two Seal Lock Hex. Socket Hd. Bolts M5 x 14 [1] <1>, the Armature [12] <12> can be
extracted together with Bearing Cover (A) [11] <11> and the related parts.
7. Carefully wrap the Armature [12] <12> with a soft, clean rag to protect it from being damaged, and clamp it
securely in a vise. Then, remove the Special Nut M10 [6] <6> and extract the Gear and Pinion Set [20] <20>.
8. For the models indicated in Fig. 11, the Ball Bearing 6301DDCMPS2L [9] <9> can be removed from the
Armature [12] <12> by utilizing a J-204 bearing puller (special repair tool, Code No. 970982) as illustrated
below. After the ball bearing has been removed, Bearing Cover (A) [11] <11> can be easily taken off.
Bearing puller (Code No. 970982)
Push
--- 14 ---
(2) Removal of the Dust Seal [44] <44>
1. Insert the hooks of the J-204 bearing puller between the commutator and the Dust Seal [44] <44> from both
sides, and fix the hooks with the wing bolts.
2. Place the J-204 bearing puller on a supporting jig and push down on the armature shaft with a hand press to
remove the Dust Seal [44] <44> together with the Ball Bearing 6000VVCMPS2L [45] <45>. Replace the Dust
Seal [44] <44> with new one because it is damaged by the removal of the Ball Bearing 6000VVCMPS2L [45]
<45>.
(3) Removal of the Stator [15] <15>
1. After removing the Armature [12] <12>, disconnect the internal wires connected to the Brush Holder Set [52]
<52> and the Switch (2P Pillar Type) W/Safety Lock [58] <59>.
2. Loosen the two Hex. Hd. Tapping Screws D5 x 75 [14] <14> and remove the Stator [15] <15> from the
Housing Ass'y [47] <47>. If the Stator [15] <15> cannot be easily removed from the Housing Ass'y [47] <47>,
disassembly can be facilitated by heating the Housing Ass'y [47] <47> to a temperature of approximately
60ûC (140ûF) with an appropriate heating device.
(4) Disassembly of the gear (Fig. 6)
1. Loosen the four Hex. Socket Hd. Bolts (W/Flange) M5 x 16 [32] <32> fixing the Packing Gland [31] <31>, and
remove the Packing Gland [31] <31> from the Gear Cover Ass'y [5] <5>.
2. Remove the Retaining Ring for D10 Shaft [21] <21> and the Coupling Cover [22] <22> from the Spindle [29]
<29>.
3. Hold the bottom of the Packing Gland [31] <31> with a sleeve jig whose outer diameter is slightly larger than
that of the Spindle [29] <29>. Push down the top of the Spindle [29] <29> until the groove on the Spindle [29]
<29> for fixing the Retaining Ring for D10 Shaft [21] <21> reaches the top of the Coupling [24] <24> and the
Spindle [29] <29> cannot be pushed down any more. (Step 2)
4. Turn the Packing Gland [31] <31> upside down and fix it, then push down the Spindle [29] <29>. (Step 3)
5. Insert the steel plate between the Gear and Pinion Set [20] <20> and the Packing Gland [31] <31>, and push
down the Spindle [29] <29> with a hand press to remove it. (Step 4)
Replace the Ball Bearing 6302VVCMPS2L [27] <27> with new one every time should the gear be
disassembled because the stress while pulling out the gear is applied to the Ball Bearing 6302VVCMPS2L
[27] <27>.
Step 2
Steel plate
Step 4
Push
Step 3
Push
Push
--- 15 ---
8-2. Reassembly
Put the parts together in the reverse order of disassembly, with the precautions given below.
(1) Generously lubricate the teeth of the Gear and Pinion Set [20] <20> with grease. Rub grease onto the teeth
with your fingers so that the grease reaches each tooth bottom. Note that under-lubricated Gear and Pinion
Set [20] <20> may wear at a faster rate.
(3) Apply Three Bond TB 1406 Screw Locking Agent to the following screws.
Two Seal Lock Hex. Socket Hd. Bolts M5 x 14 [1] <1> fixing Bearing Cover (A) [11] <11> in place.
Four Hex. Socket Hd. Bolts (W/Flange) M5 x 16 [32] <32> fixing the Packing Gland [31] <31> in place.
(4) Check that the spring end does not hold the terminal when mounting the carbon brush. Do not catch the
terminal in the brush cover when mounting the brush cover.
Fig. 13
Dust seal
Armature
Ball bearing
(6000VVCMPS2L)
(2) When replacing the Armature [12] <12> and the Ball
Bearing 6000VVCMPS2L [45] <45> on the commutator
side, press inward on the Dust Seal [44] <44> while taking
care of its direction until the end face of the Dust Seal [44]
<44> hits against the butting surface of the Armature [12]
<12> and make sure that the Dust Seal [44] <44> cannot
turn freely. (See Fig. 12.)
The Dust Seal [44] <44> is an important element for
improved dust protection of the Ball Bearing
6000VVCMPS2L [45] <45>. Be sure to use a new one at
every disassembly work of the Ball Bearing
6000VVCMPS2L [45] <45>.
Fig. 14
--- 16 ---
(5) Arrange the internal wires as shown in Figs. 15 and 16 being careful not to connect in wrong direction or
position and not to get the internal wires caught in parts.
Fig. 15
Pass the internal wire of
the cord through this area.
Fit the internal wire in
the groove securely.
Insert the terminal securely.
(a) Models G 18SCY/G 23SCY/G 18SEY/G 23SEY
(b) Models G 18UAY/G 23UAY/G 18UBY/G 23UBY
Pass the internal wire of
the cord through this area.
Fit the internal wire in
the groove securely.
Insert the terminal securely.
Resistor ass'y
Fit the internal wire in
the groove securely.
Insert the terminal securely.
Insert the terminal securely.
Fit the internal wire in
the groove securely.
--- 17 ---
(6) Mount the cord clip as shown in Fig. 17 being careful of the direction.
The internal wire with tube of stator shall pass this groove.
Fig. 16
The internal wire of stator
shall pass this groove.
8-3. Lubrication Points and Types of Lubricant
Pinion chamber of the Gear Cover Ass'y [5] <5> ............. ALVANIA grease EP (LF) O 35 g
Generously rub grease onto the gear, pinion and
inner circumference of metal.
8-4. Tightening Torque
Tapping Screws (W/Flange) D4 x 16
[50] <50> [61] <62> ................................................................ 2.0 0.5 N•m (20 5 kgf•cm, 1.5 0.4 ft-lbs.)
Seal Lock Hex. Socket Hd. Bolt M5 x 14 [1] <1> .................... 2.9 0.5 N•m (30 5 kgf•cm, 2.2 0.4 ft-lbs.)
Tapping Screw (W/Flange) D5 x 35 (Black) [2] <2> ............... 3.4 0.7 N•m (35 7 kgf•cm, 2.5 0.5 ft-lbs.)
Hex. Socket Hd. Bolt (W/Flange) M5 x 16 [32] <32> .............. 7.8 1.5 N•m (80 15 kgf•cm, 5.8 1.1 ft-lbs.)
Special Nut M10 [6] <6> ......................................................... 15.3 35 N•m (150 30 kgf
•
cm, 10.8 2.2 ft-lbs.)
Machine Screw M5 x 10 [25] <25> ......................................... 5.9 1.5 N•m (60 15 kgf•cm, 4.3 5.1 ft-lbs.)
Fig. 17
Cord dia.: Over 8.5 mm dia. Cord dia.: Max. 8.5 mm dia.
Cord clip mounting diagram
The internal wire of stator
shall pass this groove.
--- 18 ---
8-5. Wiring Diagram
(1) Models G 18SCY/G 23SCY/G 18SEY/G 23SEY
(2) Models G 18UAY/G 23UAY/G 18UBY/G 23UBY
8-6. Insulation Tests
On completion of disassembly and repair, measure the insulation resistance, and conduct the dielectric strength
test.
Insulation resistance: 7 M Ω or more with DC 500 V megohm tester
Dielectric strength test: AC 4,000 V/1 minute, with no abnormalities............................... 220 V --- 240 V products
AC 2,500 V/1 minute, with no abnormalities .............................. 110 V --- 127 V products
8-7. No-load Current Value
After no-load operation for 30 minutes, the no-load current value should be as follows.
Voltage (V)
Current (A) max.
110
6.3
120
6.8
220
3.6
240
3.7
Wiring dia.
<For the U.S.A.>
Fig. 18
(a)
(b)
(c)
230
3.8
--- 19 ---
9. STANDARD REPAIR TIME (UNIT) SCHEDULES
MODEL 10 20 30 40
Fixed
Variable
Work Flow
Seal Plate
60 min.
50
Retaining Ring
Coupling Cover
Gear
Housing
Stator
Wheel Guard
Ass'y
Handle (B)
Cord Armor
General Assembly
G 18SCY
G 18UAY
Gear Cover
Ass'y
G 18SEY
G 18UBY
Handle (A)
Switch
Cord
Handle Damper
Bearing
Cover (B)
Ball Bearing
(6302VV)
Felt Packing (B)
Packing Gland
Spindle
Gear and
Pinion Ass'y
Pinion
Armature
Ball Bearing
(6301VV)
Ball Bearing
(6000VV)
Seal Washer
Felt Packing
Bearing
Cover (A)
Dust Seal
G 23SCY
G 23UAY
G 23SEY
G 23UBY
ELECTRIC TOOL PARTS LIST
LIST NO. E283
DISC GRINDER
Model G 18SCY
2006 • 10 •19
(E1)
Hitachi Power Tools
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
21
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
41
42
43
18
19
44
45
46
47
48
50
51
59
54
52
58
60
61
63
65
66
67
64
22
23
53
50
50
55
51
52
62
50
49
56
57
20
1
501
502
503
40
*
ALTERNATIVE PARTS--- 2 ---
ITEM
NO.
CODE NO.
DESCRIPTION REMARKS
NO.
USED
PARTS
10 -- 06
G 18SCY
1 984-509
SEAL LOCK HEX. SOCKET HD. BOLT M5X14
2
2 323-209
TAPPING SCREW (W/FLANGE) D5X35 (BLACK) 4
3 306-888 PUSHING BUTTON 1
4 320-219 SPRING 1
5 326-717 GEAR COVER ASS’Y 1 INCLUD. 3, 4, 16, 18, 19
6 320-226 SPECIAL NUT M10 1
7 320-221 SEAL WASHER 1
8 320-222 FELT PACKING 1
9 630-1VV BALL BEARING 6301VVCMPS2L 1
10 994-208 RUBBER RING (B) 1
11 320-220 BEARING COVER (A) 1
*12 360-594U ARMATURE ASS’Y 110V-120V 1 INCLUD. 8, 9, 44, 45
*12 360-777E ARMATURE 220V-230V 1
*12 360-594F ARMATURE 240V 1
13 320-215 FAN GUIDE 1
14 984-271 HEX. HD. TAPPING SCREW D5X75 2
*15 340-682C STATOR 110V-120V 1
*15 340-682E STATOR 220V-240V 1
16 937-033 FELT WASHER 1
17 322-411 SIDE HANDLE 1
18 320-218 O-RING 1
19 306-890 LOCK PIN 1
*20 326-719 GEAR AND PINION SET 1
*20 326-718 GEAR AND PINION SET 1 FOR USA, CAN
21 939-540
RETAINING RING FOR D10 SHAFT (10 PCS.)
1
22 326-722 COUPLING COVER 1
23 326-721 COUPLING DAMPER 4
24 326-720 COUPLING 1
25 949-236 MACHINE SCREW M5X10 (10 PCS.) 2
26 326-723 BEARING COVER (B) 1
27 630-2VV BALL BEARING 6302VVCMPS2L 1
28 990-852 FELT PACKING (B) 1
*29 326-727 SPINDLE 1
*29 326-728 SPINDLE 1 FOR USA, CAN
30 320-228 SEAL PLATE 1
31 320-227 PACKING GLAND 1
32 994-192
HEX. SOCKET HD. BOLT (W/FLANGE) M5X16
4
33 311-492 LABEL 1
34 321-546 SET PIN 1
35 321-545 LEVER 1
36 306-887 BOLT M8X22 1
37 949-457 SPRING WASHER M8 (10 PCS.) 1
38 321-544 SET PIECE 1
39 673-489
RETAINING RING (E-TYPE) FOR D5 SHAFT
1
*40 321-543 WHEEL GUARD ASS’Y 1 INCLUD. 33-39
*40 324-266 WHEEL GUARD ASS’Y 1 INCLUD. 33-39 FOR USA, CAN
*41 937-907Z WHEEL WASHER (A) 1
*41 937-922P WHEEL WASHER (B) FOR D5/8” HOLE 1 FOR USA, CAN
*41 937-908Z WHEEL WASHER (B) 1 FOR AUS
*42 316-824 D. C. WHEELS 180MM A24R (25 PCS.) 1
EXCEPT FOR GBR, HOL, ESP, SWE, AUT, USA, CAN
*43 937-909Z WHEEL NUT M14X2 1
*
ALTERNATIVE PARTS --- 3 ---
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
PARTS
10 -- 06
G 18SCY
*43 937-923P WHEEL NUT 5/8”-11UNC 1 FOR USA, CAN
*43 937-917Z WHEEL NUT (B) 1 FOR AUS
44 320-216 DUST SEAL 1
45 600-0VV BALL BEARING 6000VVCMPS2L 1
46 321-536 BEARING BUSHING 1
47 326-712 HOUSING ASS’Y 1 INCLUD. 46
48 326-716 BRUSH COVER 1
49 326-726 HANDLE DAMPER 1
50 305-812
TAPPING SCREW (W/FLANGE) D4X16 (BLACK) 6
*51 999-061 CARBON BRUSH 7X17X22.5 (1 PAIR) 2
*51 999-061 CARBON BRUSH 7X17X22.5 (1 PAIR) 1 FOR EUROPE
*51 999-089
CARBON BRUSH (AUTO STOP TYPE) (1 PAIR) 1 FOR EUROPE
52 322-323 BRUSH HOLDER SET 2
53 326-715 BRUSH COVER 1
54 HITACHI LABEL 1
55 NAME PLATE 1
56 326-724 O-RING 1
57 326-725 O-RING 1
*58 320-238
SWITCH (2P PILLAR TYPE) W/SAFETY LOCK 1 OFF/LOCK
*58 320-239
SWITCH (2P PILLAR TYPE) W/SAFETY LOCK 1 W/LOCK
*58 322-614
SWITCH (2P PILLAR TYPE) W/SAFETY LOCK 1 W/LOCK INCLUD. 62 FOR USA,CAN
59 326-714 HANDLE (B) 1
60 960-266 CORD CLIP 1
61 984-750 TAPPING SCREW (W/FLANGE) D4X16 2
*62 322-549 SWITCH COVER 1 FOR USA, CAN
63 326-713 HANDLE (A) 1
*64 930-804 TERMINAL M4.0 (10 PCS.) 2 FOR USA, CAN
65 981-373 TUBE (D) 2
*66 940-778 CORD ARMOR D10.7 1
*66 958-049 CORD ARMOR D8.2 1 FOR AUS, SIN, INA
*67 321-537 CORD 1 (CORD ARMOR D10.7)
*67 321-539 CORD 1 (CORD ARMOR D10.7) FOR GBR (110V)
*67 500-460Z CORD 1 (CORD ARMOR D10.7) FOR GBR (230V)
*67 321-538 CORD 1 (CORD ARMOR D10.7) FOR USA, CAN
*67 500-408Z CORD 1 (CORD ARMOR D8.8) FOR AUS
*67 500-245Z CORD 1 (CORD ARMOR D10.7) FOR SYR
*67 500-234Z CORD 1 (CORD ARMOR D8.8) FOR INA
*67 500-474Z CORD 1 (CORD ARMOR D10.7) FOR TPE, VEN
*67 500-423Z CORD 1 (CORD ARMOR D8.8) FOR SIN
*
ALTERNATIVE PARTS
--- 4 --- 10 -- 06
OPTIONAL ACCESSORIES
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
STANDARD ACCESSORIES
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
G 18SCY
Printed in Japan
(061019N)
501 937-913Z WRENCH 1
502 937-907Z WHEEL WASHER (A) 1
503 937-917Z WHEEL NUT (B) 1 FOR AUS
601 316-824 D. C. WHEELS 180MM A24R (25 PCS.) 1
602 310-337 SUPER WASHER 1
603 323-993 PIPE HANDLE SET 1 INCLUD. 604
604 985-597 BOLT M14 1 FOR PIPE HANDLE
ELECTRIC TOOL PARTS LIST
LIST NO. E285
DISC GRINDER
Model G 18UAY
2006 • 10 •19
(E1)
Hitachi Power Tools
2
3
6
7
8
9
10
11
12
13
14
15
16
17
21
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
18
19
44
45
46
47
48
50
51
60
54
52
59
61
62
64
65
66
22
23
53
50
50
55
51
52
50
49
56
57
20
58
1
501
4
5
63
*
ALTERNATIVE PARTS--- 2 ---
ITEM
NO.
CODE NO.
DESCRIPTION REMARKS
NO.
USED
PARTS
10 -- 06
G 18UAY
1 984-509
SEAL LOCK HEX. SOCKET HD. BOLT M5X14
2
2 323-209
TAPPING SCREW (W/FLANGE) D5X35 (BLACK)
4
3 306-888 PUSHING BUTTON 1
4 320-219 SPRING 1
5 326-717 GEAR COVER ASS’Y 1 INCLUD. 3, 4, 16, 18, 19
6 320-226 SPECIAL NUT M10 1
7 320-221 SEAL WASHER 1
8 320-222 FELT PACKING 1
9 630-1VV BALL BEARING 6301VVCMPS2L 1
10 994-208 RUBBER RING (B) 1
11 320-220 BEARING COVER (A) 1
12 360-777E ARMATURE 220V-230V 1
13 320-215 FAN GUIDE 1
14 984-271 HEX. HD. TAPPING SCREW D5X75 2
15 340-682E STATOR 220V-240V 1
16 937-033 FELT WASHER 1
17 322-411 SIDE HANDLE 1
18 320-218 O-RING 1
19 306-890 LOCK PIN 1
20 326-719 GEAR AND PINION SET 1
21 939-540
RETAINING RING FOR D10 SHAFT (10 PCS.)
1
22 326-722 COUPLING COVER 1
23 326-721 COUPLING DAMPER 4
24 326-720 COUPLING 1
25 949-236 MACHINE SCREW M5X10 (10 PCS.) 2
26 326-723 BEARING COVER (B) 1
27 630-2VV BALL BEARING 6302VVCMPS2L 1
28 990-852 FELT PACKING (B) 1
29 326-727 SPINDLE 1
30 320-228 SEAL PLATE 1
31 320-227 PACKING GLAND 1
32 994-192
HEX. SOCKET HD. BOLT (W/FLANGE) M5X16
4
33 311-492 LABEL 1
34 321-546 SET PIN 1
35 321-545 LEVER 1
36 306-887 BOLT M8X22 1
37 949-457 SPRING WASHER M8 (10 PCS.) 1
38 321-544 SET PIECE 1
39 673-489
RETAINING RING (E-TYPE) FOR D5 SHAFT
1
40 321-543 WHEEL GUARD ASS’Y 1 INCLUD. 33-39
41 937-907Z WHEEL WASHER (A) 1
*42316-824 D. C. WHEELS 180MM A24R (25 PCS.) 1 EXCEPT FOR FRG, AUT
43 937-909Z WHEEL NUT M14X2 1
44 320-216 DUST SEAL 1
45 600-0VV BALL BEARING 6000VVCMPS2L 1
46 321-536 BEARING BUSHING 1
47 326-712 HOUSING ASS’Y 1 INCLUD. 46
48 326-715 BRUSH COVER 1
49 326-726 HANDLE DAMPER 1
50 305-812
TAPPING SCREW (W/FLANGE) D4X16 (BLACK) 6
51 999-061 CARBON BRUSH 7X17X22.5 (1 PAIR) 1
*
ALTERNATIVE PARTS --- 3 ---
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
PARTS
10 -- 06
G 18UAY
51 999-089
CARBON BRUSH (AUTO STOP TYPE) (1 PAIR)
1
52 322-323 BRUSH HOLDER SET 2
53 326-716 BRUSH COVER 1
54 HITACHI LABEL 1
55 NAME PLATE 1
56 326-724 O-RING 1
57 326-725 O-RING 1
58 320-236 RESISTOR 1
59 320-235
SWITCH (2P PILLAR TYPE) W/SAFETY LOCK
1
60 326-714 HANDLE (B) 1
61 960-266 CORD CLIP 1
62 984-750 TAPPING SCREW (W/FLANGE) D4X16 2
63 326-713 HANDLE (A) 1
64 981-373 TUBE (D) 2
65 940-778 CORD ARMOR D10.7 1
66 321-537 CORD 1 (CORD ARMOR D10.7)
*
ALTERNATIVE PARTS
--- 4 --- 10 -- 06
OPTIONAL ACCESSORIES
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
STANDARD ACCESSORIES
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
G 18UAY
Printed in Japan
(061019N)
501 937-913Z WRENCH 1
601 316-824 D. C. WHEELS 180MM A24R (25 PCS.) 1
602 310-337 SUPER WASHER 1
603 323-993 PIPE HANDLE SET 1 INCLUD. 604
604 985-597 BOLT M14 1 FOR PIPE HANDLE
ELECTRIC TOOL PARTS LIST
LIST NO. E284
DISC GRINDER
Model G 18SEY
2006 • 10 •19
(E1)
Hitachi Power Tools
3
6
7
8
9
10
11
12
13
14
15
16
17
21
24
25
26
27
28
29
30
31
32
33
34
35
36
37
41
42
43
18
19
44
45
46
47
48
50
51
59
54
52
58
60
61
63
64
65
22
23
53
50
50
55
51
52
50
56
57
20
1
501
502
503
38
40
39
2
62
49
4
5
*
ALTERNATIVE PARTS--- 2 ---
ITEM
NO.
CODE NO.
DESCRIPTION REMARKS
NO.
USED
PARTS
10 -- 06
G 18SEY
1 984-509 SEAL LOCK HEX. SOCKET HD. BOLT M5X14 2
2 323-209
TAPPING SCREW (W/FLANGE) D5X35 (BLACK) 4
3 306-888 PUSHING BUTTON 1
4 320-219 SPRING 1
5 326-717 GEAR COVER ASS’Y 1 INCLUD. 3, 4, 16, 18, 19
6 320-226 SPECIAL NUT M10 1
7 320-221 SEAL WASHER 1
8 320-222 FELT PACKING 1
9 630-1VV BALL BEARING 6301VVCMPS2L 1
10 994-208 RUBBER RING (B) 1
11 320-220 BEARING COVER (A) 1
12 360-777E ARMATURE 220V-230V 1
13 320-215 FAN GUIDE 1
14 984-271 HEX. HD. TAPPING SCREW D5X75 2
15 340-682E STATOR 220V-240V 1
16 937-033 FELT WASHER 1
17 322-411 SIDE HANDLE 1
18 320-218 O-RING 1
19 306-890 LOCK PIN 1
20 326-719 GEAR AND PINION SET 1
21 939-540
RETAINING RING FOR D10 SHAFT (10 PCS.)
1
22 326-722 COUPLING COVER 1
23 326-721 COUPLING DAMPER 4
24 326-720 COUPLING 1
25 949-236 MACHINE SCREW M5X10 (10 PCS.) 2
26 326-723 BEARING COVER (B) 1
27 630-2VV BALL BEARING 6302VVCMPS2L 1
28 990-852 FELT PACKING (B) 1
29 326-727 SPINDLE 1
30 320-228 SEAL PLATE 1
31 320-227 PACKING GLAND 1
32 994-192
HEX. SOCKET HD. BOLT (W/FLANGE) M5X16
4
33 311-492 LABEL 1
34 321-546 SET PIN 1
35 321-545 LEVER 1
36 306-887 BOLT M8X22 1
37 949-457 SPRING WASHER M8 (10 PCS.) 1
38 321-544 SET PIECE 1
39 673-489
RETAINING RING (E-TYPE) FOR D5 SHAFT
1
40 321-543 WHEEL GUARD ASS’Y 1 INCLUD. 33-39
*41 937-907Z WHEEL WASHER (A) 1
*41 937-908Z WHEEL WASHER (B) 1 FOR NZL
*42 316-824 D. C. WHEELS 180MM A24R (25 PCS.) 1 EXCEPT FOR HOL, ESP, AUT
*43 937-909Z WHEEL NUT M14X2 1
*43 937-917Z WHEEL NUT (B) 1 FOR NZL
44 320-216 DUST SEAL 1
45 600-0VV BALL BEARING 6000VVCMPS2L 1
46 321-536 BEARING BUSHING 1
47 326-712 HOUSING ASS’Y 1 INCLUD. 46
48 326-715 BRUSH COVER 1
49 326-726 HANDLE DAMPER 1
*
ALTERNATIVE PARTS --- 3 ---
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
PARTS
10 -- 06
G 18SEY
50 305-812 TAPPING SCREW (W/FLANGE) D4X16 (BLACK) 6
51 999-061 CARBON BRUSH 7X17X22.5 (1 PAIR) 1
51 999-089
CARBON BRUSH (AUTO STOP TYPE) (1 PAIR) 1
52 322-323 BRUSH HOLDER SET 2
53 326-716 BRUSH COVER 1
54 HITACHI LABEL 1
55 NAME PLATE 1
56 326-724 O-RING 1
57 326-725 O-RING 1
*58 320-238
SWITCH (2P PILLAR TYPE) W/SAFETY LOCK 1 OFF/LOCK
*58 320-239
SWITCH (2P PILLAR TYPE) W/SAFETY LOCK 1 W/LOCK
59 326-714 HANDLE (B) 1
60 960-266 CORD CLIP 1
61 984-750 TAPPING SCREW (W/FLANGE) D4X16 2
62 326-713 HANDLE (A) 1
63 981-373 TUBE (D) 1 FOR CORD
*64 940-778 CORD ARMOR D10.7 1
*64 958-049 CORD ARMOR D8.2 1 FOR NZL
*65 321-537 CORD 1 (CORD ARMOR D10.7)
*65 500-408Z CORD 1 (CORD ARMOR D8.2) FOR NZL
*
ALTERNATIVE PARTS
--- 4 --- 10 -- 06
OPTIONAL ACCESSORIES
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
STANDARD ACCESSORIES
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
G 18SEY
Printed in Japan
(061019N)
501 937-913Z WRENCH 1
502 937-907Z WHEEL WASHER (A) 1
* 503 937-917Z WHEEL NUT (B) 1 FOR NZL
601 316-824 D. C. WHEELS 180MM A24R (25 PCS.) 1
602 310-337 SUPER WASHER 1
603 323-993 PIPE HANDLE SET 1 INCLUD. 604
604 985-597 BOLT M14 1
ELECTRIC TOOL PARTS LIST
LIST NO. E286
DISC GRINDER
Model G 18UBY
2006 • 10 •19
(E1)
Hitachi Power Tools
2
5
6
7
8
9
10
11
12
13
14
15
16
17
21
24
25
26
27
28
29
30
31
32
33
34
35
36
37
41
42
43
18
19
44
45
46
47
48
50
51
60
54
52
59
61
62
63
64
65
66
22
23
53
50
50
55
51
52
50
49
56
57
20
58
1
38
40
39
3
4
501
*
ALTERNATIVE PARTS--- 2 ---
ITEM
NO.
CODE NO.
DESCRIPTION REMARKS
NO.
USED
PARTS
10 -- 06
G 18UBY
1 984-509 SEAL LOCK HEX. SOCKET HD. BOLT M5X14 2
2 323-209
TAPPING SCREW (W/FLANGE) D5X35 (BLACK) 4
3 306-888 PUSHING BUTTON 1
4 320-219 SPRING 1
5 326-717 GEAR COVER ASS’Y 1 INCLUD. 3, 4, 16, 18, 19
6 320-226 SPECIAL NUT M10 1
7 320-221 SEAL WASHER 1
8 320-222 FELT PACKING 1
9 630-1VV BALL BEARING 6301VVCMPS2L 1
10 994-208 RUBBER RING (B) 1
11 320-220 BEARING COVER (A) 1
12 360-777E ARMATURE 220V-230V 1
13 320-215 FAN GUIDE 1
14 984-271 HEX. HD. TAPPING SCREW D5X75 2
15 340-682E STATOR 220V-240V 1
16 937-033 FELT WASHER 1
17 322-411 SIDE HANDLE 1
18 320-218 O-RING 1
19 306-890 LOCK PIN 1
20 326-719 GEAR AND PINION SET 1
21 939-540
RETAINING RING FOR D10 SHAFT (10 PCS.)
1
22 326-722 COUPLING COVER 1
23 326-721 COUPLING DAMPER 4
24 326-720 COUPLING 1
25 949-236 MACHINE SCREW M5X10 (10 PCS.) 2
26 326-723 BEARING COVER (B) 1
27 630-2VV BALL BEARING 6302VVCMPS2L 1
28 990-852 FELT PACKING (B) 1
29 326-727 SPINDLE 1
30 320-228 SEAL PLATE 1
31 320-227 PACKING GLAND 1
32 994-192
HEX. SOCKET HD. BOLT (W/FLANGE) M5X16
4
33 311-492 LABEL 1
34 321-546 SET PIN 1
35 321-545 LEVER 1
36 306-887 BOLT M8X22 1
37 949-457 SPRING WASHER M8 (10 PCS.) 1
38 321-544 SET PIECE 1
39 673-489
RETAINING RING (E-TYPE) FOR D5 SHAFT
1
40 321-543 WHEEL GUARD ASS’Y 1 INCLUD. 33-39
41 937-907Z WHEEL WASHER (A) 1
*42 316-824 D. C. WHEELS 180MM A24R (25 PCS.) 1 EXCEPT FOR FRG, HOL, AUT
43 937-909Z WHEEL NUT M14X2 1
44 320-216 DUST SEAL 1
45 600-0VV BALL BEARING 6000VVCMPS2L 1
46 321-536 BEARING BUSHING 1
47 326-712 HOUSING ASS’Y 1 INCLUD. 46
48 326-715 BRUSH COVER 1
49 326-726 HANDLE DAMPER 1
50 305-812
TAPPING SCREW (W/FLANGE) D4X16 (BLACK) 6
51 999-061 CARBON BRUSH 7X17X22.5 (1 PAIR) 1
*
ALTERNATIVE PARTS --- 3 ---
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
PARTS
10 -- 06
G 18UBY
51 999-089 CARBON BRUSH (AUTO STOP TYPE) (1 PAIR) 1
52 322-323 BRUSH HOLDER SET 2
53 326-716 BRUSH COVER 1
54 HITACHI LABEL 1
55 NAME PLATE 1
56 326-724 O-RING 1
57 326-725 O-RING 1
58 320-236 RESISTOR 1
*59 320-371
SWITCH (2P PILLAR TYPE) W/SAFETY LOCK
1 FOR HOL
*59 320-235
SWITCH (2P PILLAR TYPE) W/SAFETY LOCK
1
60 326-714 HANDLE (B) 1
61 960-266 CORD CLIP 1
62 984-750 TAPPING SCREW (W/FLANGE) D4X16 2
63 326-713 HANDLE (A) 1
64 981-373 TUBE (D) 2
65 940-778 CORD ARMOR D10.7 1
66 321-537 CORD 1 (CORD ARMOR D10.7)
*
ALTERNATIVE PARTS
--- 4 --- 10 -- 06
OPTIONAL ACCESSORIES
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
STANDARD ACCESSORIES
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
G 18UBY
Printed in Japan
(061019N)
501 937-913Z WRENCH 1
601 316-824 D. C. WHEELS 180MM A24R (25 PCS.) 1
602 310-337 SUPER WASHER 1
603 323-993 PIPE HANDLE SET 1 INCLUD. 604
604 985-597 BOLT M14 1 FOR PIPE HANDLE
ELECTRIC TOOL PARTS LIST
LIST NO. E279
DISC GRINDER
Model G 23SCY
2006 • 9 •28
(E1)
Hitachi Power Tools
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
21
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
18
19
44
45
46
47
48
50
51
59
54
52
58
60
61
63
65
66
67
64
22
23
53
50
50
55
51
52
62
50
49
56
57
20
1
501
502
*
ALTERNATIVE PARTS--- 2 ---
ITEM
NO.
CODE NO.
DESCRIPTION REMARKS
NO.
USED
PARTS
9 -- 06
G 23SCY
1 984-509
SEAL LOCK HEX. SOCKET HD. BOLT M5X14
2
2 323-209
TAPPING SCREW (W/FLANGE) D5X35 (BLACK) 4
3 306-888 PUSHING BUTTON 1
4 320-219 SPRING 1
5 326-717 GEAR COVER ASS’Y 1 INCLUD. 3, 4, 16, 18, 19
6 320-226 SPECIAL NUT M10 1
7 320-221 SEAL WASHER 1
8 320-222 FELT PACKING 1
9 630-1DD BALL BEARING 6301DDCMPS2L 1
10 994-208 RUBBER RING (B) 1
11 320-220 BEARING COVER (A) 1
*12 360-594U ARMATURE ASS’Y 110V-120V 1 INCLUD. 8, 9, 44, 45
*12 360-777E ARMATURE 220V-230V 1
13 320-215 FAN GUIDE 1
14 984-271 HEX. HD. TAPPING SCREW D5X75 2
*15 340-682C STATOR 110V-120V 1
*15 340-682E STATOR 220V-240V 1
16 937-033 FELT WASHER 1
17 322-411 SIDE HANDLE 1
18 320-218 O-RING 1
19 306-890 LOCK PIN 1
20 326-718 GEAR AND PINION SET 1
21 939-540
RETAINING RING FOR D10 SHAFT (10 PCS.)
1
22 326-722 COUPLING COVER 1
23 326-721 COUPLING DAMPER 4
24 326-720 COUPLING 1
25 949-236 MACHINE SCREW M5X10 (10 PCS.) 2
26 326-723 BEARING COVER (B) 1
27 630-2VV BALL BEARING 6302VVCMPS2L 1
28 990-852 FELT PACKING (B) 1
*29 326-727 SPINDLE 1
*29 326-728 SPINDLE 1 FOR USA, CAN
30 320-228 SEAL PLATE 1
31 320-227 PACKING GLAND 1
32 994-192
HEX. SOCKET HD. BOLT (W/FLANGE) M5X16
4
33 311-492 LABEL 1
34 321-546 SET PIN 1
35 321-545 LEVER 1
36 306-887 BOLT M8X22 1
37 949-457 SPRING WASHER M8 (10 PCS.) 1
38 321-544 SET PIECE 1
39 673-489
RETAINING RING (E-TYPE) FOR D5 SHAFT
1
*40 321-547 WHEEL GUARD ASS’Y 1 INCLUD. 33-39
*40 324-267 WHEEL GUARD ASS’Y 1 INCLUD. 33-39 FOR USA, CAN
*41 937-907Z WHEEL WASHER (A) 1
*41 310-337 SUPER WASHER 1 FOR BEL
*41 937-922P WHEEL WASHER (B) FOR D5/8” HOLE 1 FOR USA, CAN
*42 316-825 D. C. WHEELS 230MM A24R (25 PCS.) 1 FOR VEN, SYR, SIN
*43 937-909Z WHEEL NUT M14X2 1
*43 937-923P WHEEL NUT 5/8”-11UNC 1 FOR USA, CAN
44 320-216 DUST SEAL 1
*
ALTERNATIVE PARTS --- 3 ---
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
PARTS
9 -- 06
G 23SCY
45 600-0VV BALL BEARING 6000VVCMPS2L 1
46 321-536 BEARING BUSHING 1
47 326-712 HOUSING ASS’Y 1 INCLUD. 46
48 326-716 BRUSH COVER 1
49 326-726 HANDLE DAMPER 1
50 305-812
TAPPING SCREW (W/FLANGE) D4X16 (BLACK) 8
*51 999-061 CARBON BRUSH 7X17X22.5 (1 PAIR) 2
*51 999-061 CARBON BRUSH 7X17X22.5 (1 PAIR) 1
FOR FRA, HOL, ITA, FRG, ESP, BEL, AUT
*51 999-089 CARBON BRUSH (AUTO STOP TYPE) (1 PAIR) 1
FOR FRA, HOL, ITA, FRG, ESP, BEL, AUT
52 322-323 BRUSH HOLDER SET 2
53 326-715 BRUSH COVER 1
54 HITACHI LABEL 1
55 NAME PLATE 1
56 326-724 O-RING 1
57 326-725 O-RING 1
*58 320-238
SWITCH (2P PILLAR TYPE) W/SAFETY LOCK
1 OFF/LOCK
*58 320-239
SWITCH (2P PILLAR TYPE) W/SAFETY LOCK
1 W/LOCK
*58 322-614
SWITCH (2P PILLAR TYPE) W/SAFETY LOCK
1 INCLUD. 62 W/LOCK FOR USA, CAN
59 326-714 HANDLE (B) 1
60 960-266 CORD CLIP 1
61 984-750 TAPPING SCREW (W/FLANGE) D4X16 2
*62 322-549 SWITCH COVER 1 FOR USA, CAN
63 326-713 HANDLE (A) 1
*64 930-804 TERMINAL M4.0 (10 PCS.) 2 FOR USA, CAN
*65 981-373 TUBE (D) 2 FOR CORD
*66 940-778 CORD ARMOR D10.7 1
*66 958-049 CORD ARMOR D8.2 1
*67 321-537 CORD 1 (CORD ARMOR D10.7)
*67 500-474Z CORD 1 (CORD ARMOR D10.7) FOR VEN
*67 500-245Z CORD 1 (CORD ARMOR D10.7) FOR SYR
*67 500-423Z CORD 1 (CORD ARMOR D8.2) FOR SIN
*67 321-538 CORD 1 (CORD ARMOR D10.7) FOR USA, CAN
*67 321-539 CORD 1 (CORD ARMOR D10.7) FOR GBR (110V)
*67 500-460Z CORD 1 (CORD ARMOR D10.7) FOR GBR (230V)
*
ALTERNATIVE PARTS
--- 4 --- 9 -- 06
OPTIONAL ACCESSORIES
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
STANDARD ACCESSORIES
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
G 23SCY
Printed in Japan
(060928N)
501 325-491 WRENCH 1
* 502 326-175 CASE 1 FOR FRA, BEL
601 316-825 D. C. WHEELS 230MM A24R (25 PCS.) 1
602 310-337 SUPER WASHER 1
603 323-993 PIPE HANDLE SET 1 INCLUD. 604
604 985-597 BOLT M14 2 FOR PIPE HANDLE
* 605 937-984Z WHEEL GUARD 1 FOR USA, CAN
ELECTRIC TOOL PARTS LIST
LIST NO. E281
DISC GRINDER
Model G 23UAY
2006 • 9 •29
(E1)
Hitachi Power Tools
501
2
4
5
6
7
8
9
10
11
12
13
14
15
16
17
21
24
25
26
27
28
29
30
31
32
33
34
35
36
37
41
601
43
18
19
44
45
46
47
48
50
51
60
54
52
59
61
62
63
64
65
66
22
23
53
50
50
55
51
52
50
49
56
57
20
58
1
38
40
39
3
*
ALTERNATIVE PARTS--- 2 ---
ITEM
NO.
CODE NO.
DESCRIPTION REMARKS
NO.
USED
PARTS
9 -- 06
G 23UAY
1 984-509
SEAL LOCK HEX. SOCKET HD. BOLT M5X14
2
2 323-209
TAPPING SCREW (W/FLANGE) D5X35 (BLACK) 4
3 306-888 PUSHING BUTTON 1
4 320-219 SPRING 1
5 326-717 GEAR COVER ASS’Y 1 INCLUD. 3, 4, 16, 18, 19
6 320-226 SPECIAL NUT M10 1
7 320-221 SEAL WASHER 1
8 320-222 FELT PACKING 1
9 630-1DD BALL BEARING 6301DDCMPS2L 1
10 994-208 RUBBER RING (B) 1
11 320-220 BEARING COVER (A) 1
12 360-777E ARMATURE 220V-230V 1
13 320-215 FAN GUIDE 1
14 984-271 HEX. HD. TAPPING SCREW D5X75 2
15 340-682E STATOR 220V-240V 1
16 937-033 FELT WASHER 1
17 322-411 SIDE HANDLE 1
18 320-218 O-RING 1
19 306-890 LOCK PIN 1
20 326-718 GEAR AND PINION SET 1
21 939-540
RETAINING RING FOR D10 SHAFT (10 PCS.)
1
22 326-722 COUPLING COVER 1
23 326-721 COUPLING DAMPER 4
24 326-720 COUPLING 1
25 949-236 MACHINE SCREW M5X10 (10 PCS.) 2
26 326-723 BEARING COVER (B) 1
27 630-2VV BALL BEARING 6302VVCMPS2L 1
28 990-852 FELT PACKING (B) 1
29 326-727 SPINDLE 1
30 320-228 SEAL PLATE 1
31 320-227 PACKING GLAND 1
32 994-192
HEX. SOCKET HD. BOLT (W/FLANGE) M5X16
4
33 311-492 LABEL 1
34 321-546 SET PIN 1
35 321-545 LEVER 1
36 306-887 BOLT M8X22 1
37 949-457 SPRING WASHER M8 (10 PCS.) 1
38 321-544 SET PIECE 1
39 673-489
RETAINING RING (E-TYPE) FOR D5 SHAFT
1
40 321-547 WHEEL GUARD ASS’Y 1 INCLUD. 33-39
41 937-907Z WHEEL WASHER (A) 1
43 937-909Z WHEEL NUT M14X2 1
44 320-216 DUST SEAL 1
45 600-0VV BALL BEARING 6000VVCMPS2L 1
46 321-536 BEARING BUSHING 1
47 326-712 HOUSING ASS’Y 1 INCLUD. 46
48 326-715 BRUSH COVER 1
49 326-726 HANDLE DAMPER 1
50 305-812
TAPPING SCREW (W/FLANGE) D4X16 (BLACK) 8
51 999-061 CARBON BRUSH 7X17X22.5 (1 PAIR) 1
51 999-089
CARBON BRUSH (AUTO STOP TYPE) (1 PAIR)
1
*
ALTERNATIVE PARTS --- 3 ---
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
PARTS
9 -- 06
G 23UAY
52 322-323 BRUSH HOLDER SET 2
53 326-716 BRUSH COVER 1
54 HITACHI LABEL 1
55 NAME PLATE 1
56 326-724 O-RING 1
57 326-725 O-RING 1
58 320-236 RESISTOR 1
*59 320-371
SWITCH (2P PILLAR TYPE) W/SAFETY LOCK
1
*59 320-235
SWITCH (2P PILLAR TYPE) W/SAFETY LOCK
1 FOR AUT, FRG, ESP
60 326-714 HANDLE (B) 1
61 960-266 CORD CLIP 1
62 984-750 TAPPING SCREW (W/FLANGE) D4X16 2
63 326-713 HANDLE (A) 1
64 981-373 TUBE (D) 2
65 940-778 CORD ARMOR D10.7 1
66 321-537 CORD 1
*
ALTERNATIVE PARTS
--- 4 --- 9 -- 06
OPTIONAL ACCESSORIES
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
STANDARD ACCESSORIES
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
G 23UAY
Printed in Japan
(060929N)
501 325-491 WRENCH 1
601 316-825 D. C. WHEELS 230MM A24R (25 PCS.) 1
602 310-337 SUPER WASHER 1
603 323-993 PIPE HANDLE SET 1 INCLUD. 604
604 985-597 BOLT M14 2 FOR PIPE HANDLE
ELECTRIC TOOL PARTS LIST
LIST NO. E280
DISC GRINDER
Model G 23SEY
2006 • 9 •28
(E1)
Hitachi Power Tools
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
21
24
25
26
27
28
29
30
31
32
33
34
35
36
37
41
42
43
18
19
44
45
46
47
48
50
51
59
54
52
58
60
61
62
63
64
65
22
23
53
50
50
55
51
52
50
49
56
57
20
501
502
503
38
40
39
1
504
*
ALTERNATIVE PARTS--- 2 ---
ITEM
NO.
CODE NO.
DESCRIPTION REMARKS
NO.
USED
PARTS
9 -- 06
G 23SEY
1 984-509
SEAL LOCK HEX. SOCKET HD. BOLT M5X14
2
2 323-209
TAPPING SCREW (W/FLANGE) D5X35 (BLACK) 4
3 306-888 PUSHING BUTTON 1
4 320-219 SPRING 1
5 326-717 GEAR COVER ASS’Y 1 INCLUD. 3, 4, 16, 18, 19
6 320-226 SPECIAL NUT M10 1
7 320-221 SEAL WASHER 1
8 320-222 FELT PACKING 1
9 630-1DD BALL BEARING 6301DDCMPS2L 1
10 994-208 RUBBER RING (B) 1
11 320-220 BEARING COVER (A) 1
*12 360-777E ARMATURE 220V-230V 1
*12 360-594F ARMATURE 240V 1
13 320-215 FAN GUIDE 1
14 984-271 HEX. HD. TAPPING SCREW D5X75 2
15 340-682E STATOR 220V-240V 1
16 937-033 FELT WASHER 1
17 322-411 SIDE HANDLE 1
18 320-218 O-RING 1
19 306-890 LOCK PIN 1
20 326-718 GEAR AND PINION SET 1
21 939-540
RETAINING RING FOR D10 SHAFT (10 PCS.)
1
22 326-722 COUPLING COVER 1
23 326-721 COUPLING DAMPER 4
24 326-720 COUPLING 1
25 949-236 MACHINE SCREW M5X10 (10 PCS.) 2
26 326-723 BEARING COVER (B) 1
27 630-2VV BALL BEARING 6302VVCMPS2L 1
28 990-852 FELT PACKING (B) 1
29 326-727 SPINDLE 1
30 320-228 SEAL PLATE 1
31 320-227 PACKING GLAND 1
32 994-192
HEX. SOCKET HD. BOLT (W/FLANGE) M5X16
4
33 311-492 LABEL 1
34 321-546 SET PIN 1
35 321-545 LEVER 1
36 306-887 BOLT M8X22 1
37 949-457 SPRING WASHER M8 (10 PCS.) 1
38 321-544 SET PIECE 1
39 673-489
RETAINING RING (E-TYPE) FOR D5 SHAFT
1
40 321-547 WHEEL GUARD ASS’Y 1 INCLUD. 33-39
*41 937-907Z WHEEL WASHER (A) 1
*41 937-908Z WHEEL WASHER (B) 1 FOR AUS, NZL
*42 316-825 D. C. WHEELS 230MM A24R (25 PCS.) 1 FOR AUS, NZL, SAF
43 937-909Z WHEEL NUT M14X2 1
44 320-216 DUST SEAL 1
45 600-0VV BALL BEARING 6000VVCMPS2L 1
46 321-536 BEARING BUSHING 1
47 326-712 HOUSING ASS’Y 1 INCLUD. 46
48 326-715 BRUSH COVER 1
49 326-726 HANDLE DAMPER 1
*
ALTERNATIVE PARTS --- 3 ---
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
PARTS
9 -- 06
G 23SEY
50 305-812 TAPPING SCREW (W/FLANGE) D4X16 (BLACK) 8
*51 999-061 CARBON BRUSH 7X17X22.5 (1 PAIR) 2
*51 999-061 CARBON BRUSH 7X17X22.5 (1 PAIR) 1 EXCEPT FOR AUS, FIN, NOR, SWE, DEN
*51 999-089
CARBON BRUSH (AUTO STOP TYPE) (1 PAIR)
1EXCEPT FOR AUS, FIN, NOR, SWE, DEN
52 322-323 BRUSH HOLDER SET 2
53 326-716 BRUSH COVER 1
54 HITACHI LABEL 1
55 NAME PLATE 1
56 326-724 O-RING 1
57 326-725 O-RING 1
*58 320-238
SWITCH (2P PILLAR TYPE) W/SAFETY LOCK
1
*58 320-239
SWITCH (2P PILLAR TYPE) W/SAFETY LOCK
1 FOR AUT, FRG, ESP, SAF
59 326-714 HANDLE (B) 1
60 960-266 CORD CLIP 1
61 984-750 TAPPING SCREW (W/FLANGE) D4X16 2
62 326-713 HANDLE (A) 1
63 981-373 TUBE (D) 2 FOR CORD
*64 940-778 CORD ARMOR D10.7 1
*64 958-049 CORD ARMOR D8.2 1
*65 321-537 CORD 1 (CORD ARMOR D10.7)
*65 500-408Z CORD 1 (CORD ARMOR D8.2) FOR AUS, NZL
*
ALTERNATIVE PARTS
--- 4 --- 9 -- 06
OPTIONAL ACCESSORIES
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
STANDARD ACCESSORIES
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
G 23SEY
Printed in Japan
(060928N)
501 325-491 WRENCH 1
* 502 937-907Z WHEEL WASHER (A) 1 FOR AUS, NZL
* 503 937-917Z WHEEL NUT (B) 1 FOR AUS, NZL
* 504 326-175 CASE 1 FOR FRA
* 504 323-713 CASE 1 FOR AUS
601 316-825 D. C. WHEELS 230MM A24R (25 PCS.) 1
602 310-337 SUPER WASHER 1
603 323-993 PIPE HANDLE SET 1 INCLUD. 604
604 985-597 BOLT M14 2 FOR PIPE HANDLE
ELECTRIC TOOL PARTS LIST
LIST NO. E282
DISC GRINDER
Model G 23UBY
2006 • 9 •29
(E1)
Hitachi Power Tools
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
21
24
25
26
27
28
29
30
31
32
33
34
35
36
37
41
42
43
18
19
44
45
46
47
48
50
51
60
54
52
59
61
62
63
64
65
66
22
23
53
50
50
55
51
52
50
49
56
57
20
58
1
38
40
39
501
502
503
2
*
ALTERNATIVE PARTS--- 2 ---
ITEM
NO.
CODE NO.
DESCRIPTION REMARKS
NO.
USED
PARTS
9 -- 06
G 23UBY
1 984-509
SEAL LOCK HEX. SOCKET HD. BOLT M5X14
2
2 323-209
TAPPING SCREW (W/FLANGE) D5X35 (BLACK) 4
3 306-888 PUSHING BUTTON 1
4 320-219 SPRING 1
5 326-717 GEAR COVER ASS’Y 1 INCLUD. 3, 4, 16, 18, 19
6 320-226 SPECIAL NUT M10 1
7 320-221 SEAL WASHER 1
8 320-222 FELT PACKING 1
9 630-1DD BALL BEARING 6301DDCMPS2L 1
10 994-208 RUBBER RING (B) 1
11 320-220 BEARING COVER (A) 1
*12 360-594U ARMATURE ASS’Y 110V-120V 1 INCLUD. 8, 9, 44, 45
*12 360-777E ARMATURE 220V-230V 1
*12 360-594F ARMATURE 240V 1
13 320-215 FAN GUIDE 1
14 984-271 HEX. HD. TAPPING SCREW D5X75 2
*15 340-682C STATOR 110V-120V 1
*15 340-682E STATOR 220V-240V 1
16 937-033 FELT WASHER 1
17 322-411 SIDE HANDLE 1
18 320-218 O-RING 1
19 306-890 LOCK PIN 1
20 326-718 GEAR AND PINION SET 1
21 939-540
RETAINING RING FOR D10 SHAFT (10 PCS.)
1
22 326-722 COUPLING COVER 1
23 326-721 COUPLING DAMPER 4
24 326-720 COUPLING 1
25 949-236 MACHINE SCREW M5X10 (10 PCS.) 2
26 326-723 BEARING COVER (B) 1
27 620-2VV BALL BEARING 6202VVCMPS2L 1
28 990-852 FELT PACKING (B) 1
29 326-727 SPINDLE 1
30 320-228 SEAL PLATE 1
31 320-227 PACKING GLAND 1
32 994-192
HEX. SOCKET HD. BOLT (W/FLANGE) M5X16
4
33 311-492 LABEL 1
34 321-546 SET PIN 1
35 321-545 LEVER 1
36 306-887 BOLT M8X22 1
37 949-457 SPRING WASHER M8 (10 PCS.) 1
38 321-544 SET PIECE 1
39 673-489
RETAINING RING (E-TYPE) FOR D5 SHAFT
1
40 321-547 WHEEL GUARD ASS’Y 1 INCLUD. 33-39
*41 937-907Z WHEEL WASHER (A) 1
*41 937-908Z WHEEL WASHER (B) 1 FOR AUS
*42 316-825 D. C. WHEELS 230MM A24R (25 PCS.) 1 FOR AUS
43 937-909Z WHEEL NUT M14X2 1
44 320-216 DUST SEAL 1
45 600-0VV BALL BEARING 6000VVCMPS2L 1
46 321-536 BEARING BUSHING 1
47 326-712 HOUSING ASS’Y 1 INCLUD. 46
*
ALTERNATIVE PARTS --- 3 ---
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
PARTS
9 -- 06
G 23UBY
48 326-715 BRUSH COVER 1
49 326-726 HANDLE DAMPER 1
50 305-812
TAPPING SCREW (W/FLANGE) D4X16 (BLACK) 8
*51 999-061 CARBON BRUSH 7X17X22.5 (1 PAIR) 2
*51 999-061 CARBON BRUSH 7X17X22.5 (1 PAIR) 1 FOR AUT, FRG, ESP, FRA, HOL, ITA
*51 999-089
CARBON BRUSH (AUTO STOP TYPE) (1 PAIR)
1 FOR AUT, FRG, ESP, FRA, HOL, ITA
52 322-323 BRUSH HOLDER SET 2
53 326-716 BRUSH COVER 1
54 HITACHI LABEL 1
55 NAME PLATE 1
56 326-724 O-RING 1
57 326-725 O-RING 1
58 320-236 RESISTOR 1
*59 320-371
SWITCH (2P PILLAR TYPE) W/SAFETY LOCK
1
*59 320-235
SWITCH (2P PILLAR TYPE) W/SAFETY LOCK
1 FOR AUT, FRG, ESP
60 326-714 HANDLE (B) 1
61 960-266 CORD CLIP 1
62 984-750 TAPPING SCREW (W/FLANGE) D4X16 2
63 326-713 HANDLE (A) 1
64 981-373 TUBE (D) 2 FOR CORD
*65 940-778 CORD ARMOR D10.7 1
*65 958-049 CORD ARMOR D8.2 1
*66 321-537 CORD 1 (CORD ARMOR D10.7)
*66 321-539 CORD 1 (CORD ARMOR D10.7) FOR GBR (110V)
*66 500-460Z CORD 1 (CORD ARMOR D10.7) FOR GBR (230V)
*66 500-408Z CORD 1 (CORD ARMOR D8.2) FOR AUS
*
ALTERNATIVE PARTS
--- 4 --- 9 -- 06
OPTIONAL ACCESSORIES
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
STANDARD ACCESSORIES
ITEM
NO.
CODE NO.
DESCRIPTION
REMARKS
NO.
USED
G 23UBY
Printed in Japan
(060929N)
501 325-491 WRENCH 1
* 502 937-917Z WHEEL NUT (B) 1 FOR AUS
* 503 937-907Z WHEEL WASHER (A) 1 FOR AUS
601 316-825 D. C. WHEELS 230MM A24R (25 PCS.) 1
602 310-337 SUPER WASHER 1
603 323-993 PIPE HANDLE SET 1 INCLUD. 604
604 985-597 BOLT M14 2 FOR PIPE HANDLE
Loading...