Makita 9300 User manual

Bench Grinder
125 mm (5") MODEL 9300
INSTRUCTION MANUAL
SPEC IF I CAT I 0 N S
Wheel size 1 Hz 1 No load speed 1 Overall length I Net weight
* Manufacturer reserves the right to change specifications without notice.
Note: Specifications may differ from country to country.

For Your Own Safety Read Instruction
I
Manual Before Operating
BENCH GRINDER
GENERAL SAFETY PRECAUTIONS
(For All Tools)
1. KNOW YOUR POWERTOOL. Readthe owner's manual carefully. Learnthe
tools applications and limitations, as well as the specific potentialhazards
peculiar to
it.
2. KEEP GUARDS IN PLACE and in working order.
3. REMOVE ADJUSTING KEYS AND WRENCHES. Form habit of checking to
seethat keysandadjusting wrenches are removedfrom toolbefore turning
it on.
4. KEEP WORK AREA CLEAN. Clutteredareas and benches invite accidents.
5. DON'T USEINDANGEROUSENVIRONMENT.Don't usepowertools in damp
or wet locations, or expose them to rain. Keep work area well lighted.
6. KEEP CHILDRENAWAY. Allvisitors should bekept safe distance from work
area.
7. MAKE WORKSHOP KID PROOF with padlocks, master switches, or by
removing starter keys.
8. DON'T FORCETOOL. It willdothejob betterandsafer attheratefor which
it was designed.
9. USE RIGHT TOOL. Don't force tool or attachment to do a job for which it
was not designed.
10. WEAR PROPER APPAREL. Wear no loose clothing, gloves, neckties, rings,
bracelets, or other jewelry which may get caught
in moving parts. Nonslip
footwear isrecommended. Wear protectivehaircoveringtocontain longhair.
11. ALWAYS USE SAFETY GLASSES. Also use face or dust mask if cutting
operation isdusty. Everyday eyeglassesonly have impact resistant lenses,
they are NOT safety glasses.
12. SECUREWORK. Useclamps or avise toholdwork when practical. It's safer
than using your hand and
it frees both hands to operate tool.
13. DON'T OVERREACH. Keep proper footing and balance at all times.
14. MAINTAIN TOOLS WITH CARE. Keep tools sharp and clean for best and
safest performance. Follow instructionsfor lubricating and changing acces-
sories.
15. DISCONNECTTOOLS before servicing; when changing accessoriessuchas
blades, bits, cutters, and the like.
16. REDUCE THE RISK OF UNINTENTIONALSTARTING. Make sure switch is
in off position before plugging
in.
2

17. USE RECOMMENDED ACCESSORIES. Consult the owner's manual for
recommendedaccessories.The useof improperaccessoriesmay causerisk
of injury to persons.
18. NEVER STAND ON TOOL. Serious injury could occur if the toolistipped or
if the cutting tool is accidentally contacted.
19. CHECK DAMAGEDPARTS. Before further use of the tool, a guard or other
part that is damaged should be carefully checked to determine that
it will
operate properly and perform itsintendedfunction
- check for alignment
of moving parts, bindingof movingparts, breakageof parts, mounting, and
any other conditions that may affect its operation. A guard or other part
that is damaged should be properly repaired or replaced.
20. DIRECTION OF FEED. Feed work intoa bladeor cutter against the direction
of rotation of the blade or cutter only.
21. NEVER LEAVE TOOL RUNNING UNATTENDED. TURN POWER OFF. Don't
leave tool until
it comes to a complete stop.
22. PROPER GROUNDING. Thistoolshould be grounded while in usetoprotect
the operator from electric shock.
23. EXTENSIONCORDS: Useonly three-wire extensioncords which have three-
prong grounding-type plugs and three-pole receptacles which accept the
tool's plug. Replace
or repair damaged or worn cord immediately.
VOLTAGE WARNING: Before connectingthe tooltoa power source (receptacle,
outlet, etc.) be sure the voltage supplied is the same as that specified on the
nameplateof the tool. A power source
with voltage greater than that specified
for the tool can result
in SERIOUS INJURY tothe user - as well as damage to
the tool. If
in doubt, DO NOT PLUG INTHE TOOL. Using a power source with
voltage less than the nameplate rating is harmful to the motor.
3

GROUNDING INSTRUCTIONS
ALL GROUNDED, CORD-CONNECTEDTOOLS: In the event of a malfunctionor
breakdown, grounding provides a path
of least resistance for electric current to
reduce the risk of electric shock. This toolisequipped withanelectric cordhav-
ingan equipment-groundingconductor and a grounding plug. The plug must be
plugged intoa matchingoutletthat isproperlyinstalledandgrounded
in accord-
ance
with all local codes and ordinances.
Do not modifythe plugprovided - if it will notfittheoutlet, havetheproperoutlet
installed by a qualified electrician.
Improper connection of the equipment-groundingconductor can result
in a risk
of electric shock. The conductor
with insulation having an outer surface that is
green
with or without yellow stripes is the equipment-grounding conductor. If
repair or replacement of the electric cord or plug is necessary, do not connect
the equipment-groundingconductor to a live terminal.
Check
with aqualifiedelectrician or serviceman if thegrounding instructions are
not completely understood, or
if in doubt as to whether the tool is properly
grounded.
Grounded, cord-connected tools intended for use on a supply circuit having a
nominal ratingless than
150 volts: This toolisintended for use ona circuit that
hasanoutletthat
looks liketheone illustrated in Figure A. Thetoolhas a ground-
ingplugthat looksliketheplugillustrated
in Figure A. A Temporaryadapter, which
looks likethe adapter illustrated
in Figure B and C, may be usedtoconnect this
plug to a 2-pole receptacle as shown
in Figure 6 if a properly grounded outlet
is not available. The temporary adapter should be used only
until a properly
groundedoutlet can be installed by aqualified electrician. The green-coloredrigid
ear, lug, etc. extending from the adapter must be connected to a permanent
ground such as a properly grounded outlet box.
FIG. A
9 1
GroundingPin
GROUNDING METHODS
FIG.
6
-
- Cover of Grounded -
Outlet Box
FIG. C
Adapter
9 Grounding
Means
4

ADDITIONAL SAFETY RULES FOR BENCH GRINDER
1. Be sure that the guards are in place to protect the operator against flying
debris and injury
in case the wheel breaks.
2. Check the wheel for cracks and chipped edges before mounting and/or
running
it. Stand away from the front of the wheel and run for more than
one minutetotest
it. Replace if you noteanythingabnormal. Thentest new
wheel for more than
3 minutes.
3. Use only the face of a straight wheel and the side of a cup wheel when
grinding. Avoid suddenfeeds of work intowheel tominimizethe possibility
of cracks or breakage.
4. Donotstrike or drop the wheel. Useonly the shaft, flanges, nutsandother
installing parts specified by Makita. Handlethem carefully and remove any
foreign matter adhering to them.
5. Always wear safety goggles when grinding. Also wear aface mask if there
is much dust.
6. Stand aside andlet wheel come up tofull speed after switching on, before
you start to use the grinder.
7. Stop work and switchoff immediately whenever the wheel stops or emits
a strange noise during operation.
8. Metal grinding creates sparks. Keep the area around the grinder free of
anything ignitable: oil, gas, glue, bond, paint, etc.
9. Replace cracked, chipped or damaged wheels immediately. Installcarefully
in accordance with the instruction manual.
IO. Useonly wheels of specifieddimensionsindicatedonthe benchgrinder label.
The inside and outside of the grinding wheel (flange contacting portions)
should have a label, or the wheel should not be used. Use only a grinding
wheel with a maximum safe speed over the maximum wheel speed stated
onthe bench grinder. Use only a wheel with the hole size that fits the tool
shaft. *Arbor size
12.7 mm (1/2”).
Do notattempt toenlarge the hole size or use bushings to compensate for
a loose
fit. Never use the grinder with a loose grinding wheel.
11. Be sure the wheel you intend to mount as a replacement has no cracks,
chippedareas or defects. Mount wheel onarodor pencilthrough arbor hole
andtap side lightly with a wooden handle or piece of wood.
If it rings clear
when tapped at several places when the wheel is rotated, the wheel can
be used.
12. Ifnutisloose, runningthe wheel can be extremely dangerous. Onthe other
hand, a wheel that is tightened too much can be damaged and thus be a
danger. Usethe standard equippedwrenches and secure
in accordancewith
the instruction manual procedure.
13. Donot letyour fingers or clothingbecome caught ina revolving wheel. Also,
do not leave a bench grinder running unattended.
5

14. Adjust tool rests so they are within 1 mm (1132") - 3 mm (118") of the
grindingwheel. Heightof toolrestsshouldbe
so that arelevelwiththe middle
(center) of the wheels.
15. Always keep the clearance between the face of a straight wheel and the
adjust plate less than
1.6 mm (1116"). With a cup wheel, the adjust cover
should bewithin
1 mm(1132") - 3 mm(118") fromthewheel surface. This
willpreventbodilyharmshouldthe wheel fly apart andor somethingbecome
caught inside.
16. For safe use, keepthe standard-equippedeyeshields in positionat alltimes.
17. Before switching on the grinder, turn the grinding wheel by hand to make
18. Be very carefulhowyouattachor remove work from the toolrests andalso
19. Unplug the tool and hold by means of the base when carrying.
20. Replace cracked wheel immediately.
21. Always use guards and eye shields.
22. Do not overtighten wheel nut.
23. Use only flanges furnished with the grinder.
24. Adjust distance between wheel and work rest to maintain 118 inch or less
25. Frequently clean grinding dust from beneath grinder.
SAVE THESE INSTRUCTIONS.
sure
it is not contacting the work or tool rest.
where you set the work.
separation as the diameter of the wheel decreases
with use.
6

NAMES OF PARTS
Thumb screw C
Shaft lock
Grinding wheel
I
BEFORE USE
1. The eyeshields are packedtogether with
the bench grinder. Always install the
eyeshields before operation (see explan-
atory figure).
2. Fit eyeshields in between wheel cover
and adjust plate (fitting small screws
into installation holes on eyeshields).
Secure tightly with
P. H. screws.
'\\ Eyeshleld
- .- Aajust __ plate
7

HOW TO USE
Keep the space between the adjust plate
and grinding wheel under 1.6mm (1/16").
Screw in securely the
(+) P. H. screws as
soon
as you have adjusted the adjust plate.
(+) P. H. Screw
Under
1 6 m
Installing and removing the grinding wheel
1. Use a (+) screwdriver to remove the (+I
P. H. screws from the side cover.
Toggle switch \
I I
8

Sharpening planer blade
1. Howtofitplaner blade holder set
Inthe case of fitting the planer bladeto
the slider, two thumb screws of planer
blade holder should be tightened
so that
the slider should always be contacted
closely with the bladegauge
A side, and
the edge of blade should be contacted
with
its gauge 6 side.
2. Mount the planer blade holder on the
tool rest and sharpen the blade gradual-
ly but rather quickly, moving it back
and forth across
the face of the wheel.
Thumb screw M5 x 10
Blade gauge E side
r
I 4
11
q I] Ease gauge
Blade
aauae A side \ Slider
/
canerolade holder
- Tool rest
~-
3. To adjust the fine adjustment slide, use the adjust screw. Keep the tool rest at the
same angle
as the grindingwheel duringoperation.
How to use the groove cutter gauge
assembly
Fit the groove cutter onto the gauge shaft
with one cutter edge flush with the side of
the guide
(A), fastening it by the thumb
screw. Then, with the guide held in place,
turn the cutter until the other edge comes
flush with the side of the guide
(A). Make
Groove Gauge
shaft
cutter
Thumb screw Washer
sure that both are equidistant from the
middleof the cutter.
9

Assembling circularsaw sharpening kit
1. First install fixed rod with cross point
into hole in the inclining tool rest.
Secure with thumb screw
B so that
screw end fits into indentation on the
rod.
2. Now slide rod for mounting saw blade
holder and
set nut into hole below on
cross point. Secure with thumb screw.
Note flat side of rod should be on the
bottom.
Set blade holder for circular saw into
hole for
it on sliding rod. Then set nut
screws into the blade holder hole.
Actual sharpening procedure
1. Unscrew set nut and set circular saw
blade on holder. Secure carefully to
holderwith the
set nut.
10

2. Loosenthumb screws and move blade in
closer to the grinding wheel. Make sure
blade
lies flat on top of the inclining
tool rest. Secure thumb screws.
3. Using the two adjust screws (6, C) on
the right side, work the slidingrodside-
ways until the tip of the saw blade just
contacts the side of the grinding wheel.
Secure blade with adjust screws
so that
uniform stock (teeth tips) removal will
result.
3. Rotate the saw blade inclockwise direc-
tion after switchingon the tool, cutting
blade teeth to uniform height. This
jointing step evens upthe circumference
of the blade. Switch off grinder.
11

5. Keep a clearanceofapproximately2mm
(3/32") between the wheel and the
blade teeth for turning. Secure thumb
screw.
Next, draw blade up to wheel
so that
the wheel
is well into the tooth gullet.
Use adjust screws
(B, C) for fixed set-
ting that will assure uniform gullet
depthwhen sharpening.
I Y
6. To obtain the original bevel angle or an
angle of
15 degrees, release the thumb
screw below on the inclining
tool rest.
Tilt resttodesired angle and secure with
thumb screw.
Now proceedtosharpen blade by grind-
ingevery other tooth.
After sharpening on side, readjust inclin-
ing tool rest for the same angle for the
opposite-side teeth. Turn blade over
after releasing
set nut; set blade on
blade holder and secure with
set nut.
Sharpen the other side of the blade
(i.e., every other as yet unsharpenedtooth) using
the same procedureindicatedabove.
12

ACCESSORIES
CAUTION :
These accessories or attachments are recommended for use with your Makita tool specified in this
manual. The use
of any other accessories or attachments might present a risk of injury to persons.
The accessories or attachments should
be used only in the proper and intended manner.
125 15.J x 1311/29 x 12.711/2”l WAGOK
Saw blade sharpening kit
Part No. 122174-8
741004-0
Grindingwheels
Sire (mml I Grit I Part No
0 Eyeshield
Part No. 122203-7
/
Cutter gauge set
Part No. 123002-0
Planer blade holder set
Part No. 123019-3
0 Tool rest (C)
Part No. 31 1071-5
Sleeve (13) (For a 5/8” arbor hole)
Part
No. 257517-6
Offset wrench (13-21)
Part No. 782004-1
13

125 mm (5")
BENCH GRINDER
Model 9300
Note: The switch and other part configurations
may differ from country to cointry.
14

'LkM $tD DESCRIPTION 'EM $ED DESCRIPTION
MAC
1
2
3
4
5
6
7
8
9
10
12
13
14
15
16
17
10
19
M
21
22
23
24
25
26
27
20
29
30
31
32
33
24
35
37
38
39
!E
1
1
1
1
1
3
1
1
1
2
1
1
1
1
1
1
1
1
1
3
1
1
2
1
1
2
1
1
4
1
1
1
1
1
2
1
1
P. H. Screw M4.8 IWifhWasher)
Side Cover
IRI
H. Nut Wl12-21 IRight-handscrew)
Outer
Flange 50
Inner Flange 50
P. H. Screw M5r10 IWithWarherl
Wheel
Cover IRI
stator
Adlust
Plats (AI
P.
H. Screw M6x16 (WithWasher1
P," 4.5
ROTOR ASSEMBLY
IAsambledItems 13,
14. 16, 17 & 491
PI" 4 5
Pin 4.5
Spindle Lock Bush
Ball Bearing 6202LLB
Compression
Spring 7
Pin 6
Retaining Ring R-12
P. H. Screw M6x25 lWithWarherl
H. 0011 M6x12
Bracket
P. H. Screw M5x30 lWi1h Washed
T. Screw M6x12
Stop Plate
P. H. Screw M4r8 IWithWasher)
Rod
Screw M10
Rivet 0-5
Name Plate
Sllde Plate
Makita
bbel
MOW tiOUslng
Mocor Housing Cover
P. H. Screw M4x18 (WnhWarherl
Strain Relief
Cord Guard
MnC
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
60
69
70
71
72
73
74
75
70
-
UE
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
2
1
1
1
1
1
2
1
2
1
1
1
1
1
1
1
1
1
2
1
1
1
-
CORD ASSEMBLY
IAsrmbledCord. Plug
& Cord Gusrdl
P. H Screw M4x0 IWnh Washer)
Side Cover ILI
H. Nut W112-21 (Left-hand Screw)
Outer Flange 50
Inner Flange 50
P. H. Screw M5x10 (WithWasher)
Wheel
Cowr (Ll
Collar
Ball Bearing 6202LLB
1-1 S. Screw M5x6
Switch
H Bolt M8xm (WithWarherl
F. Washer 0
T. Screw M5x15
P.
H. Screw M6x16 (WithWasher)
Adprt
Plate IAl
Inclined
Tool Rest
Tool Holder
T. Screw M6xZO
Spring Pin 6-24
P ti. Screw M4x0 (WithWashed
Under
Cowr
P. H Screw M4x8 [WithWashed
Capacitor
Capacitor Clamp
Separator
Switch
Cover
Rubber Cap
H. Nu1 M12
Wave Washer
26
P. H. Screw M4x8 (WifhWashed
EYE
SHIELD ASSEMBLY
P. H. Screw M4x8 (WithWashed
H. Nut M12
EYE SHIELD ASSEMBLY
Toothed Washer
12
Note The switch and other part specifications may differ from muntry to Country
15

MAKITA LIMITED ONE YEAR WARRANTY
Warranty Policy
Every Makita tool is thoroughly inspected and tested before leaving the factory. It is warranted to
be free of defects from workmanship and materials for the period of ONE YEAR from the date of
original purchase. Should any trouble develop during this one-year period, return the COMPLETE
tool, freight prepaid, to one of Makita’s Factory or Authorized ServiceCenters. If inspection shows
the trouble is caused by defective workmanship or material, Makita will repair (or at our option,
replace) without charge.
This Warranty does not apply where:
repairs have been made or attempted by others:
repairs are required because of normal wear and tear:
The tool has been abused, misused or improperly maintained;
alterationshave been made to the tool.
IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY INDIRECT, INCIDENTAL OR CON-
SEQUENTIAL DAMAGES FROM THE SALE OR USE OFTHE PRODUCT. THIS DISCLAIMER
APPLIESBOTH DURING AND AFTER THE TERM OF THISWARRANTY.
MAKITA DISCLAIMS LIABILITY FOR ANY IMPLIED WARRANTIES, INCLUDING IMPLIED
WARRANTIES OF “MERCHANTABILITY” AND “FITNESS FOR A SPECIFIC PURPOSE,”
AFTER THE ONE-YEAR TERM OFTHISWARRANTY.
This Warranty gives you specific legal rights, and you may also have other rights which vary from
state to state. Some states do not allow the exclusion or limitation of incidental or consequential
damages,
so the above limitation or exclusion may not apply to you. Some states do not allow
limitation
on how long an implied warranty lasts, so the above limitation may not apply toyou.
M akita Corporation
3-11 -8, Sumiyoshi-cho,
Anjo, Aichi
446 Japan
883078A068 PRINTED
IN JAPAN
1991 - 8 - N