Makita GA7020 ユーザーマニュアル

ブランド: Makita

モデル: GA7020

カテゴリー: パワーツール

タイプ: ユーザーマニュアル

GA7020

GA7020S

GA7020Y

GA9020

GA9020S

EN Angle Grinder INSTRUCTION MANUAL 5

ZHCN 角向磨光机使用说明书 13

ID Gerinda Sudut PETUNJUK PENGGUNAAN 22

MS Pengisar Sudut MANUAL ARAHAN 32

VI Máy Mài Góc Cầm Tay Hoạt

Động Bằng Động Cơ Điện TÀI LIỆU HƯỚNG DẪN 42

TH   51

Fig.1

Fig.2

Fig.3

Fig.4

Fig.5

Fig.6

Fig.7

Fig.8

Fig.14

Fig.9

Fig.10

Fig.11

Fig.12

Fig.13

Fig.15

Fig.16

Fig.17

5ENGLISH

ENGLISH (Original instructions)

SPECIFICATIONS

Model GA7020/GA7020Y GA7020S GA9020 GA9020S

Depressed center wheel

diameter

180 mm 230 mm

Max. wheel thickness 6.5 mm 6.5 mm 6.5 mm 6.5 mm

Spindle thread M14 M14

Rated speed (n) /

No load speed (n0)

8,500 min-1 6,600 min-1

Overall length 473 mm 473 mm

Net weight 5.5 kg 5.7 kg 5.8 kg 5.9 kg

Safety class /II

• Due to our continuing program of research and development, the specications herein are subject to change with-

out notice.

• Specications may dier from country to country.

• Weight according to EPTA-Procedure 01/2003

Symbols

The following show the symbols used for the equip-

ment. Be sure that you understand their meaning before

use.

Read instruction manual.

DOUBLE INSULATION

Wear safety glasses.

Only for EU countries

Do not dispose of electric equipment

together with household waste material!

In observance of European Directive

2012/19/EU on waste electric and elec-

tronic equipment and its implementation

in accordance with national law, electric

equipment that have reached the end of

their life must be collected separately and

returned to an environmentally compatible

recycling facility.

Intended use

The tool is intended for grinding, sanding and cutting of

metal and stone materials without the use of water.

Power supply

The tool should be connected only to a power supply of

the same voltage as indicated on the nameplate, and

can only be operated on single-phase AC supply. They

are double-insulated and can, therefore, also be used

from sockets without earth wire.

General Power Tool Safety Warnings

WARNING Read all safety warnings and all

instructions. Failure to follow the warnings and instruc-

tions may result in electric shock, re and/or serious

injury.

Save all warnings and instruc-

tions for future reference.

The term “power tool” in the warnings refers to your

mains-operated (corded) power tool or battery-operated

(cordless) power tool.

Work area safety

1. Keep work area clean and well lit. Cluttered or

dark areas invite accidents.

2. Do not operate power tools in explosive atmo-

spheres, such as in the presence of ammable

liquids, gases or dust. Power tools create sparks

which may ignite the dust or fumes.

3. Keep children and bystanders away while

operating a power tool. Distractions can cause

you to lose control.

Electrical safety

4. Power tool plugs must match the outlet. Never

modify the plug in any way. Do not use any

adapter plugs with earthed (grounded) power

tools. Unmodied plugs and matching outlets will

reduce risk of electric shock.

5. Avoid body contact with earthed or grounded

surfaces such as pipes, radiators, ranges and

refrigerators. There is an increased risk of elec-

tric shock if your body is earthed or grounded.

6. Do not expose power tools to rain or wet con-

ditions. Water entering a power tool will increase

the risk of electric shock.

7. Do not abuse the cord. Never use the cord for

carrying, pulling or unplugging the power tool.

Keep cord away from heat, oil, sharp edges

or moving parts. Damaged or entangled cords

increase the risk of electric shock.

8. When operating a power tool outdoors, use an

extension cord suitable for outdoor use. Use of

a cord suitable for outdoor use reduces the risk of

electric shock.

6ENGLISH

9. If operating a power tool in a damp location

is unavoidable, use a residual current device

(RCD) protected supply. Use of an RCD reduces

the risk of electric shock.

10. Use of power supply via a RCD with a rated

residual current of 30 mA or less is always

recommended.

Personal safety

11. Stay alert, watch what you are doing and use

common sense when operating a power tool.

Do not use a power tool while you are tired or

under the inuence of drugs, alcohol or med-

ication. A moment of inattention while operating

power tools may result in serious personal injury.

12. Use personal protective equipment. Always

wear eye protection. Protective equipment such

as dust mask, non-skid safety shoes, hard hat, or

hearing protection used for appropriate conditions

will reduce personal injuries.

13. Prevent unintentional starting. Ensure the

switch is in the o-position before connecting

to power source and/or battery pack, picking

up or carrying the tool. Carrying power tools with

your nger on the switch or energising power tools

that have the switch on invites accidents.

14. Remove any adjusting key or wrench before

turning the power tool on. A wrench or a key left

attached to a rotating part of the power tool may

result in personal injury.

15. Do not overreach. Keep proper footing and

balance at all times. This enables better control

of the power tool in unexpected situations.

16. Dress properly. Do not wear loose clothing or

jewellery. Keep your hair, clothing, and gloves

away from moving parts. Loose clothes, jewel-

lery or long hair can be caught in moving parts.

17. If devices are provided for the connection of

dust extraction and collection facilities, ensure

these are connected and properly used. Use of

dust collection can reduce dust-related hazards.

Power tool use and care

18. Do not force the power tool. Use the correct

power tool for your application. The correct

power tool will do the job better and safer at the

rate for which it was designed.

19. Do not use the power tool if the switch does

not turn it on and o. Any power tool that cannot

be controlled with the switch is dangerous and

must be repaired.

20. Disconnect the plug from the power source

and/or the battery pack from the power tool

before making any adjustments, changing

accessories, or storing power tools. Such pre-

ventive safety measures reduce the risk of starting

the power tool accidentally.

21. Store idle power tools out of the reach of chil-

dren and do not allow persons unfamiliar with

the power tool or these instructions to operate

the power tool. Power tools are dangerous in the

hands of untrained users.

22. Maintain power tools. Check for misalignment

or binding of moving parts, breakage of parts

and any other condition that may aect the

power tool’s operation. If damaged, have the

power tool repaired before use. Many accidents

are caused by poorly maintained power tools.

23. Keep cutting tools sharp and clean. Properly

maintained cutting tools with sharp cutting edges

are less likely to bind and are easier to control.

24. Use the power tool, accessories and tool bits

etc. in accordance with these instructions, tak-

ing into account the working conditions and

the work to be performed. Use of the power tool

for operations dierent from those intended could

result in a hazardous situation.

Service

25. Have your power tool serviced by a qualied

repair person using only identical replacement

parts. This will ensure that the safety of the power

tool is maintained.

26. Follow instruction for lubricating and chang-

ing accessories.

27. Keep handles dry, clean and free from oil and

grease.

GRINDER SAFETY WARNINGS

Safety Warnings Common for Grinding, Sanding,

Wire Brushing, or Abrasive Cutting-O Operations:

1. This power tool is intended to function as a

grinder, sander, wire brush or cut-o tool.

Read all safety warnings, instructions, illus-

trations and specications provided with this

power tool. Failure to follow all instructions listed

below may result in electric shock, re and/or

serious injury.

2. Operations such as polishing are not rec-

ommended to be performed with this power

tool. Operations for which the power tool was not

designed may create a hazard and cause per-

sonal injury.

3. Do not use accessories which are not speci-

cally designed and recommended by the tool

manufacturer. Just because the accessory can

be attached to your power tool, it does not assure

safe operation.

4. The rated speed of the accessory must be at

least equal to the maximum speed marked on

the power tool. Accessories running faster than

their rated speed can break and y apart.

5. The outside diameter and the thickness of your

accessory must be within the capacity rating

of your power tool. Incorrectly sized accessories

cannot be adequately guarded or controlled.

6. Threaded mounting of accessories must

match the grinder spindle thread. For acces-

sories mounted by anges, the arbour hole of

the accessory must t the locating diameter

of the ange. Accessories that do not match the

mounting hardware of the power tool will run out of

balance, vibrate excessively and may cause loss

of control.

7ENGLISH

7. Do not use a damaged accessory. Before each

use inspect the accessory such as abrasive

wheels for chips and cracks, backing pad for

cracks, tear or excess wear, wire brush for

loose or cracked wires. If power tool or acces-

sory is dropped, inspect for damage or install

an undamaged accessory. After inspecting and

installing an accessory, position yourself and

bystanders away from the plane of the rotating

accessory and run the power tool at maximum

no-load speed for one minute. Damaged acces-

sories will normally break apart during this test

time.

8. Wear personal protective equipment.

Depending on application, use face shield,

safety goggles or safety glasses. As appro-

priate, wear dust mask, hearing protectors,

gloves and workshop apron capable of stop-

ping small abrasive or workpiece fragments.

The eye protection must be capable of stopping

ying debris generated by various operations.

The dust mask or respirator must be capable of

ltrating particles generated by your operation.

Prolonged exposure to high intensity noise may

cause hearing loss.

9. Keep bystanders a safe distance away from

work area. Anyone entering the work area

must wear personal protective equipment.

Fragments of workpiece or of a broken accessory

may y away and cause injury beyond immediate

area of operation.

10. Hold the power tool by insulated gripping

surfaces only, when performing an operation

where the cutting accessory may contact hid-

den wiring or its own cord. Cutting accessory

contacting a “live” wire may make exposed metal

parts of the power tool “live” and could give the

operator an electric shock.

11. Position the cord clear of the spinning acces-

sory. If you lose control, the cord may be cut or

snagged and your hand or arm may be pulled into

the spinning accessory.

12. Never lay the power tool down until the acces-

sory has come to a complete stop. The spinning

accessory may grab the surface and pull the

power tool out of your control.

13. Do not run the power tool while carrying it at

your side. Accidental contact with the spinning

accessory could snag your clothing, pulling the

accessory into your body.

14. Regularly clean the power tool’s air vents. The

motor’s fan will draw the dust inside the housing

and excessive accumulation of powdered metal

may cause electrical hazards.

15. Do not operate the power tool near ammable

materials. Sparks could ignite these materials.

16. Do not use accessories that require liquid

coolants. Using water or other liquid coolants

may result in electrocution or shock.

Kickback and Related Warnings

Kickback is a sudden reaction to a pinched or snagged

rotating wheel, backing pad, brush or any other acces-

sory. Pinching or snagging causes rapid stalling of the

rotating accessory which in turn causes the uncon-

trolled power tool to be forced in the direction opposite

of the accessory’s rotation at the point of the binding.

For example, if an abrasive wheel is snagged or

pinched by the workpiece, the edge of the wheel that is

entering into the pinch point can dig into the surface of

the material causing the wheel to climb out or kick out.

The wheel may either jump toward or away from the

operator, depending on direction of the wheel’s move-

ment at the point of pinching. Abrasive wheels may also

break under these conditions.

Kickback is the result of power tool misuse and/or

incorrect operating procedures or conditions and can be

avoided by taking proper precautions as given below.

a) Maintain a rm grip on the power tool and

position your body and arm to allow you to

resist kickback forces. Always use auxiliary

handle, if provided, for maximum control over

kickback or torque reaction during start-up.

The operator can control torque reactions or kick-

back forces, if proper precautions are taken.

b) Never place your hand near the rotating

accessory. Accessory may kickback over your

hand.

c) Do not position your body in the area where

power tool will move if kickback occurs.

Kickback will propel the tool in direction opposite

to the wheel’s movement at the point of snagging.

d) Use special care when working corners,

sharp edges etc. Avoid bouncing and snagging

the accessory. Corners, sharp edges or bouncing

have a tendency to snag the rotating accessory

and cause loss of control or kickback.

e) Do not attach a saw chain woodcarving

blade or toothed saw blade. Such blades create

frequent kickback and loss of control.

Safety Warnings Specic for Grinding and Abrasive

Cutting-O Operations:

a) Use only wheel types that are recommended

for your power tool and the specic guard

designed for the selected wheel. Wheels for

which the power tool was not designed cannot be

adequately guarded and are unsafe.

b) The grinding surface of centre depressed

wheels must be mounted below the plane of

the guard lip. An improperly mounted wheel that

projects through the plane of the guard lip cannot

be adequately protected.

c) The guard must be securely attached to the

power tool and positioned for maximum safety,

so the least amount of wheel is exposed

towards the operator. The guard helps to protect

the operator from broken wheel fragments, acci-

dental contact with wheel and sparks that could

ignite clothing.

d) Wheels must be used only for recommended

applications. For example: do not grind with

the side of cut-o wheel. Abrasive cut-o wheels

are intended for peripheral grinding, side forces

applied to these wheels may cause them to

shatter.

8ENGLISH

e) Always use undamaged wheel anges that

are of correct size and shape for your selected

wheel. Proper wheel anges support the wheel

thus reducing the possibility of wheel breakage.

Flanges for cut-o wheels may be dierent from

grinding wheel anges.

f) Do not use worn down wheels from larger

power tools. Wheel intended for larger power tool

is not suitable for the higher speed of a smaller

tool and may burst.

Additional Safety Warnings Specic for Abrasive

Cutting-O Operations:

a) Do not “jam” the cut-o wheel or apply

excessive pressure. Do not attempt to make an

excessive depth of cut. Overstressing the wheel

increases the loading and susceptibility to twisting

or binding of the wheel in the cut and the possibil-

ity of kickback or wheel breakage.

b) Do not position your body in line with and

behind the rotating wheel. When the wheel, at

the point of operation, is moving away from your

body, the possible kickback may propel the spin-

ning wheel and the power tool directly at you.

c) When wheel is binding or when interrupting

a cut for any reason, switch o the power

tool and hold the power tool motionless until

the wheel comes to a complete stop. Never

attempt to remove the cut-o wheel from the

cut while the wheel is in motion otherwise

kickback may occur. Investigate and take correc-

tive action to eliminate the cause of wheel binding.

d) Do not restart the cutting operation in the

workpiece. Let the wheel reach full speed and

carefully re-enter the cut. The wheel may bind,

walk up or kickback if the power tool is restarted in

the workpiece.

e) Support panels or any oversized workpiece

to minimize the risk of wheel pinching and

kickback. Large workpieces tend to sag under

their own weight. Supports must be placed under

the workpiece near the line of cut and near the

edge of the workpiece on both sides of the wheel.

f) Use extra caution when making a “pocket

cut” into existing walls or other blind areas.

The protruding wheel may cut gas or water

pipes, electrical wiring or objects that can cause

kickback.

Safety Warnings Specic for Sanding Operations:

a) Do not use excessively oversized sanding

disc paper. Follow manufacturers recommen-

dations, when selecting sanding paper. Larger

sanding paper extending beyond the sanding

pad presents a laceration hazard and may cause

snagging, tearing of the disc or kickback.

Safety Warnings Specic for Wire Brushing

Operations:

a) Be aware that wire bristles are thrown by

the brush even during ordinary operation. Do

not overstress the wires by applying excessive

load to the brush. The wire bristles can easily

penetrate light clothing and/or skin.

b) If the use of a guard is recommended for

wire brushing, do not allow interference of the

wire wheel or brush with the guard. Wire wheel

or brush may expand in diameter due to work load

and centrifugal forces.

Additional Safety Warnings:

17. When using depressed centre grinding wheels,

be sure to use only berglass-reinforced

wheels.

18. NEVER USE Stone Cup type wheels with this

grinder. This grinder is not designed for these

types of wheels and the use of such a product

may result in serious personal injury.

19. Be careful not to damage the spindle, the

ange (especially the installing surface) or the

lock nut. Damage to these parts could result in

wheel breakage.

20. Make sure the wheel is not contacting the

workpiece before the switch is turned on.

21. Before using the tool on an actual workpiece,

let it run for a while. Watch for vibration or

wobbling that could indicate poor installation

or a poorly balanced wheel.

22. Use the specied surface of the wheel to per-

form the grinding.

23. Do not leave the tool running. Operate the tool

only when hand-held.

24. Do not touch the workpiece immediately after

operation; it may be extremely hot and could

burn your skin.

25. Observe the instructions of the manufacturer

for correct mounting and use of wheels.

Handle and store wheels with care.

26. Do not use separate reducing bushings or

adaptors to adapt large hole abrasive wheels.

27. Use only anges specied for this tool.

28. For tools intended to be tted with threaded

hole wheel, ensure that the thread in the wheel

is long enough to accept the spindle length.

29. Check that the workpiece is properly

supported.

30. Pay attention that the wheel continues to

rotate after the tool is switched o.

31. If working place is extremely hot and humid,

or badly polluted by conductive dust, use a

short-circuit breaker (30 mA) to assure opera-

tor safety.

32. Do not use the tool on any materials contain-

ing asbestos.

33. When use cut-o wheel, always work with

the dust collecting wheel guard required by

domestic regulation.

34. Cutting discs must not be subjected to any

lateral pressure.

SAVE THESE INSTRUCTIONS.

WARNING: DO NOT let comfort or famil-

iarity with product (gained from repeated

use) replace strict adherence to safety

rules for the subject product. MISUSE or

failure to follow the safety rules stated in

this instruction manual may cause serious

personal injury.

9ENGLISH

FUNCTIONAL

DESCRIPTION

CAUTION:

• Always be sure that the tool is switched o and

unplugged before adjusting or checking function

on the tool.

Shaft lock

► Fig.1: 1. Shaft lock

CAUTION:

• Never actuate the shaft lock when the spindle is

moving. The tool may be damaged.

Press the shaft lock to prevent spindle rotation when

installing or removing accessories.

Switch action

CAUTION:

• Before plugging in the tool, always check to see

that the switch trigger actuates properly and

returns to the “OFF” position when released.

• Switch can be locked in “ON” position for ease

of operator comfort during extended use. Apply

caution when locking tool in “ON” position and

maintain rm grasp on tool.

► Fig.2: 1. Switch trigger 2. Lock lever

For tool with the lock-on switch

Not available in Europe

To start the tool, simply pull the switch trigger (in the B

direction). Release the switch trigger to stop. For con-

tinuous operation, pull the switch trigger (in the B direc-

tion) and then push in the lock lever (in the A direction).

To stop the tool from the locked position, pull the switch

trigger fully (in the B direction), then release it.

For tool with the lock-o switch

To prevent the switch trigger from accidentally pulled, a

lock lever is provided.

To start the tool, push in the lock lever (in the A direc-

tion) and then pull the switch trigger (in the B direction).

Release the switch trigger to stop.

For tool with the lock on and lock-o

switch

Not available in Europe

To prevent the switch trigger from accidentally pulled, a

lock lever is provided.

To start the tool, push in the lock lever (in the A direc-

tion) and then pull the switch trigger (in the B direction).

Release the switch trigger to stop.

For continuous operation, push in the lock lever (in the A

direction), pull the switch trigger (in the B direction) and

then push the lock lever (in the A direction) further in.

To stop the tool from the locked position, pull the switch

trigger fully (in the B direction), then release it.

NOTE: Models GA7020S, GA9020S, GA7020SF and

GA9020SF begin to run slowly when they are turned

on. This soft start feature assures smoother operation

and less operator fatigue.

ASSEMBLY

CAUTION:

• Always be sure that the tool is switched o and

unplugged before carrying out any work on the

tool.

Installing side grip (handle)

► Fig.3

CAUTION:

• Always be sure that the side grip is installed

securely before operation.

Screw the side grip securely on the position of the tool

as shown in the gure.

Installing or removing wheel guard

(For depressed center wheel , multi

disc , wire wheel brush / abrasive

cut-o wheel , diamond wheel)

WARNING:

• When using a depressed center grinding wheel/

Multi-disc, ex wheel or wire wheel brush, the

wheel guard must be tted on the tool so that

the closed side of the guard always points

toward the operator.

• When using an abrasive cut-o / diamond

wheel, be sure to use only the special wheel

guard designed for use with cut-o wheels. (In

some European countries, when using a dia-

mond wheel, the ordinary guard can be used.

Follow the regulations in your country.)

For tool with locking screw type

wheel guard

► Fig.4: 1. Wheel guard 2. Screw 3. Bearing box

Mount the wheel guard with the protrusion on the wheel

guard band aligned with the notch on the bearing box.

Then rotate the wheel guard to such an angle that it

can protect the operator according to work. Be sure to

tighten the screw securely.

To remove wheel guard, follow the installation proce-

dure in reverse.

10 ENGLISH

For tool with clamp lever type wheel

guard

► Fig.5: 1. Wheel guard 2. Bearing box 3. Nut

4. Lever

► Fig.6: 1. Nut 2. Lever

Loosen the lever on the wheel guard. Mount the wheel

guard with the protrusion on the wheel guard band

aligned with the notch on the bearing box. Then rotate

the wheel guard around to the position shown in the

gure. Tighten the lever to fasten the wheel guard. If the

lever is too tight or too loose to fasten the wheel guard,

loosen or tighten the nut by spanner to adjust the tight-

ening of the wheel guard band.

To remove wheel guard, follow the installation proce-

dure in reverse.

Installing or removing depressed

center grinding wheel/Multi-disc

(accessory)

► Fig.7: 1. Lock nut 2. Depressed center wheel

3. Super ange 4. Inner ange

Mount the inner ange onto the spindle. Fit the wheel/

disc on the inner ange and screw the lock nut onto the

spindle.

To tighten the lock nut, press the shaft lock rmly so

that the spindle cannot revolve, then use the lock nut

wrench and securely tighten clockwise.

► Fig.8: 1. Lock nut wrench 2. Shaft lock

To remove the wheel, follow the installation procedure

in reverse.

Super ange

Models GA7020F,GA7020SF,GA9020F and GA9020SF

are standard-equipped with a super ange. Only 1/3 of

eorts needed to undo lock nut, compared with conven-

tional type.

Installing or removing abrasive disc

(optional accessory)

NOTE:

• Use sander accessories specied in this man-

ual. These must be purchased separately.

► Fig.9: 1. Lock nut 2. Abrasive disc 3. Rubber pad

Mount the rubber pad onto the spindle. Fit the disc on

the rubber pad and screw the lock nut onto the spindle.

To tighten the lock nut, press the shaft lock rmly so

that the spindle cannot revolve, then use the lock nut

wrench and securely tighten clockwise.

To remove the disc, follow the installation procedure in

reverse.

OPERATION

WARNING:

• It should never be necessary to force the tool.

The weight of the tool applies adequate pres-

sure. Forcing and excessive pressure could

cause dangerous wheel breakage.

• ALWAYS replace wheel if tool is dropped while

grinding.

• NEVER bang or hit grinding disc or wheel onto

work.

• Avoid bouncing and snagging the wheel, espe-

cially when working corners, sharp edges etc.

This can cause loss of control and kickback.

• NEVER use tool with wood cutting blades and

other sawblades. Such blades when used on a

grinder frequently kick and cause loss of control

leading to personal injury.

CAUTION:

• Never switch on the tool when it is in contact

with the workpiece, it may cause an injury to

operator.

• Always wear safety goggles or a face shield

during operation.

• After operation, always switch o the tool and

wait until the wheel has come to a complete stop

before putting the tool down.

Grinding and sanding operation

ALWAYS hold the tool rmly with one hand on rear

handle and the other on the side handle. Turn the tool

on and then apply the wheel or disc to the workpiece.

In general, keep the edge of the wheel or disc at an

angle of about 15 degrees to the workpiece surface.

During the break-in period with a new wheel, do not

work the grinder in the B direction or it will cut into

the workpiece. Once the edge of the wheel has been

rounded o by use, the wheel may be worked in both A

and B direction.

► Fig.10

Operation with wire cup brush

(optional accessory)

CAUTION:

• Check operation of brush by running tool with no

load, insuring that no one is in front of or in line

with brush.

• Do not use brush that is damaged, or which is

out of balance. Use of damaged brush could

increase potential for injury from contact with

broken brush wires.

► Fig.11: 1. Wire cup brush

Unplug tool and place it upside down allowing easy

access to spindle. Remove any accessories on spindle.

Mount wire cup brush onto spindle and tighten with

supplied wrench. When using brush, avoid applying too

much pressure which causes over bending of wires,

leading to premature breakage.

11 ENGLISH

Operation with wire wheel brush

(optional accessory)

CAUTION:

• Check operation of wire wheel brush by running

tool with no load, insuring that no one is in front

of or in line with the wire wheel brush.

• Do not use wire wheel brush that is damaged,

or which is out of balance. Use of damaged wire

wheel brush could increase potential for injury

from contact with broken wires.

• ALWAYS use guard with wire wheel brushes,

assuring diameter of wheel ts inside guard.

Wheel can shatter during use and guard helps

to reduce chances of personal injury.

► Fig.12: 1. Wire wheel brush

Unplug tool and place it upside down allowing easy

access to spindle. Remove any accessories on spindle.

Thread wire wheel brush onto spindle and tighten with

the wrenches.

When using wire wheel brush, avoid applying too much

pressure which causes over bending of wires, leading

to premature breakage.

Operation with abrasive cut-o /

diamond wheel (optional accessory)

WARNING:

• When using an abrasive cut-o / diamond

wheel, be sure to use only the special wheel

guard designed for use with cut-o wheels. (In

some European countries, when using a dia-

mond wheel, the ordinary guard can be used.

Follow the regulations in your country.)

• NEVER use cut-o wheel for side grinding.

• Do not “jam” the wheel or apply excessive

pressure. Do not attempt to make an excessive

depth of cut. Overstressing the wheel increases

the loading and susceptibility to twisting or

binding of the wheel in the cut and the possibility

of kickback, wheel breakage and overheating of

the motor may occur.

• Do not start the cutting operation in the work-

piece. Let the wheel reach full speed and care-

fully enter into the cut moving the tool forward

over the workpiece surface. The wheel may

bind, walk up or kickback if the power tool is

started in the workpiece.

• During cutting operations, never change the

angle of the wheel. Placing side pressure on

the cut-o wheel (as in grinding) will cause the

wheel to crack and break, causing serious per-

sonal injury.

• A diamond wheel shall be operated perpendicu-

lar to the material being cut.

Mount the inner ange onto the spindle. Fit the wheel/

disc on the inner ange and screw the lock nut onto the

spindle.

► Fig.13: 1. Lock nut 2. Abrasive cut-o wheel/dia-

mond wheel 3. Inner ange 4. Wheel guard

for abrasive cut-o wheel/diamond wheel

For Australia and New Zealand

Installing or removing abrasive cut-

o wheel / diamond wheel (optional

accessory)

► Fig.14: 1. Lock nut 2. Outer ange 78 3. Abrasive

cut-o wheel/diamond wheel 4. Inner ange

78 5. Wheel guard for abrasive cut-o

wheel/diamond wheel

MAINTENANCE

CAUTION:

• Always be sure that the tool is switched o and

unplugged before attempting to perform inspec-

tion or maintenance.

• Never use gasoline, benzine, thinner, alcohol

or the like. Discoloration, deformation or cracks

may result.

The tool and its air vents have to be kept clean.

Regularly clean the tool's air vents or whenever the

vents start to become obstructed.

► Fig.15: 1. Exhaust vent 2. Inhalation vent

Replacing carbon brushes

► Fig.16: 1. Commutator 2. Insulating tip 3. Carbon

brush

When the resin insulating tip inside the carbon brush

is exposed to contact the commutator, it will automati-

cally shut o the motor. When this occurs, both carbon

brushes should be replaced. Keep the carbon brushes

clean and free to slip in the holders. Both carbon

brushes should be replaced at the same time. Use only

identical carbon brushes.

Use a screwdriver to remove the brush holder caps.

Take out the worn carbon brushes, insert the new ones

and secure the brush holder caps.

► Fig.17: 1. Brush holder cap 2. Screwdriver

To maintain product SAFETY and RELIABILITY, repairs,

any other maintenance or adjustment should be per-

formed by Makita Authorized Service Centers, always

using Makita replacement parts.

OPTIONAL

ACCESSORIES

CAUTION:

• These accessories or attachments are recom-

mended for use with your Makita tool specied

in this manual. The use of any other accessories

or attachments might present a risk of injury to

persons. Only use accessory or attachment for

its stated purpose.

If you need any assistance for more details regard-

ing these accessories, ask your local Makita Service

Center.

12 ENGLISH

Do not use Super flange and Ezynut together.

Use Inner flange 78 and Outer flange 78 together. (Australia and New Zealand only)

In some European countries, when using a diamond wheel, the ordinary guard can be used instead

of the special guard covering the both side of the wheel. Follow the regulations in your country.

Side grip

Wheel guard for Depressed center grinding wheel/Multi-disc / Wire wheel brush

Inner flange / Super flange

Depressed center grinding wheel/Multi-disc

Lock nut / Ezynut*1

Abrasive cut off wheel / Diamond wheel

Outer flange 78 (Australia and New Zealand only)*3

Rubber pad

Abrasive disc

Wire wheel brush

Wire cup brush

Lock nut wrench

Sanding lock nut

Inner flange 78 (Australia and New Zealand only)*3

Wheel guard for Abrasive cut off wheel / Diamond wheel *2

Dust cover attachment

NOTE:

• Some items in the list may be included in the

tool package as standard accessories. They

may dier from country to country.

中文简体

中文简体 (原本)

规格

型号 GA7020/

GA7020Y

GA7020S GA9020 GA9020S

钹形砂轮直径 180 mm 230 mm

最大砂轮厚度 6.5 mm 6.5 mm 6.5 mm 6.5 mm

主轴螺纹 M14 M14

额定速度（n）／

空载速度（n0）

8,500 r/min 6,600 r/min

总长度 473 mm 473 mm

净重 5.5 kg 5.7 kg 5.8 kg 5.9 kg

安全等级 /II

• 由于研发计划将持续进行，生产者保留变更规格不另行通知之权利。

• 规格可能因销往国家之不同而异。

• 重量符合EPTA-Procedure 01/2003

符号

以下显示本工具使用的符号。在使用工具之

前请务必理解其含义。

阅读使用说明书。

II类工具

佩带安全眼镜。

仅限于欧盟国家

请勿将电气设备与家庭普通

废弃物一同丢弃！

请务必遵守欧洲关于废弃电

子电气设备的2012/19/EU指

令，根据法律法规执行。达

到使用寿命的电气设备必须

分类回收至符合环境保护规

定的再循环机构。

用途

本工具用于在无水的情况下进行金属和石块

材料的磨削、砂磨和切割。

电源

本工具只可连接电压与铭牌所示电压相同的

电源，且仅可使用单相交流电源。本工具双

重绝缘，因此也可用于不带接地线的插座。

电动工具通用安全警告

警告！阅读所有警告和所有说明。不遵

照以下警告和说明会导致电击、着火和／或

严重伤害。

保存所有警告和说明书以备

查阅。

在所有下列的警告中术语“电动工具”指市

电驱动（有线）电动工具或电池驱动（无

线）电动工具。

工作场地的安全

1. 保持工作场地清洁和明亮。混乱和黑暗

的场地会引发事故。

2. 不要在易爆环境，如有易燃液体、气体

或粉尘的环境下操作电动工具。电动工

具产生的火花会点燃粉尘或气体。

3. 让儿童和旁观者离开后操作电动工具。

注意力不集中会使操作者失去对工具的

控制。

电气安全

4. 电动工具插头必须与插座相配。绝不能

以任何方式改装插头。需接地的电动工

具不能使用任何转换插头。未经改装的

插头和相配的插座将减少电击危险。

5. 避免人体接触接地表面，如管道、散热

片和冰箱。如果你身体接地会增加电击

危险。

中文简体

6. 不得将电动工具暴露在雨中或潮湿环境

中。水进入电动工具将增加电击危险。

7. 不得滥用电线。绝不能用电线搬运、拉

动电动工具或拔出其插头。使电线远离

热源、油、锐边或运动部件。受损或缠

绕的软线会增加电击危险。

8. 当在户外使用电动工具时，使用适合户

外使用的外接软线。适合户外使用的软

线将减少电击危险。

9. 如果在潮湿环境下操作电动工具是不可

避免的，应使用剩余电流动作保护器

（RCD）。使用RCD可减小电击危险。

10. 始终建议通过额定剩余电流为30mA或

以下的RCD来使用电源。

人身安全

11. 保持警觉，当操作电动工具时关注所从

事的操作并保持清醒。当你感到疲倦，

或在有药物、酒精或治疗反应时，不要

操作电动工具。在操作电动工具时瞬间

的疏忽会导致严重人身伤害。

12. 使用个人防护装置。始终佩戴护目镜。

安全装置，诸如适当条件下使用防尘面

具、防滑安全鞋、安全帽、听力防护等

装置能减少人身伤害。

13. 防止意外起动。确保开关在连接电源和/

或电池盒、拿起或搬运工具时处于关断位

置。手指放在已接通电源的开关上或开关

处于接通时插入插头可能会导致危险。

14. 在电动工具接通之前，拿掉所有调节钥

匙或扳手。遗留在电动工具旋转零件上

的扳手或钥匙会导致人身伤害。

15. 手不要伸展得太长。时刻注意立足点和

身体平衡。这样在意外情况下能很好地

控制电动工具。

16. 着装适当。不要穿宽松衣服或佩戴饰品。

让衣服、手套和头发远离运动部件。宽

松衣服、佩饰或长发可能会卷入运动部

件中。

17. 如果提供了与排屑、集尘设备连接用的装

置，要确保他们连接完好且使用得当。使

用这些装置可减少尘屑引起的危险。

电动工具使用和注意事项

18. 不要滥用电动工具，根据用途使用适当

的电动工具。选用适当设计的电动工具

会使你工作更有效、更安全。

19. 如果开关不能接通或关断工具电源，则

不能使用该电动工具。不能用开关来控

制的电动工具是危险的且必须进行修理。

20. 在进行任何调节、更换附件或贮存电动

工具之前，必须从电源上拔掉插头和／

或使电池盒与工具脱开。这种防护性措

施将减少工具意外起动的危险。

21. 将闲置不用的电动工具贮存在儿童所及范

围之外，并且不要让不熟悉电动工具或对

这些说明不了解的人操作电动工具。电动

工具在未经培训的用户手中是危险的。

22. 保养电动工具。检查运动件是否调整到

位或卡住，检查零件破损情况和影响电

动工具运行的其他状况。如有损坏，电

动工具应在使用前修理好。许多事故由

维护不良的电动工具引发。

23. 保持切削刀具锋利和清洁。保养良好的

有锋利切削刃的刀具不易卡住而且容易

控制。

24. 按照使用说明书，考虑作业条件和进行

的作业来使用电动工具、附件和工具的

刀头等。将电动工具用于那些与其用途

不符的操作可能会导致危险。

维修

25. 将你的电动工具送交专业维修人员，使

用同样的备件进行修理。这样将确保所

维修的电动工具的安全性。

26. 上润滑油及更换附件时请遵循本说明书

指示。

27. 手柄务必保持干燥、清洁、无油（脂）。

磨光机安全警告

通用于磨削、砂磨、用钢丝刷清理或砂轮切

割操作的安全警告：

1. 本电动工具用作磨光机、砂光机、钢丝

刷或切断机。请通读本电动工具附带的

所有安全警告、说明、插图和规格。若

不遵循下列说明，则可能导致触电、起

火和／或严重的人身伤害。

2. 最好不要将本工具用于抛光等操作。进

行非本工具设计用途的操作可能会有危

险并导致人身伤害。

3. 请勿使用非专用的或未得到工具制造商

推荐的附件。这样的附件虽然可安装到

电动工具上，但无法确保操作安全。

4. 附件的额定速度必须至少等同于电动工

具上标示的最大速度。当运转速度大于

额定速度时，附件可能会破裂并飞出。

5. 附件的外径和厚度必须在工具的额定能

力之内。尺寸不正确的附件将无法安全

操控。

中文简体

6. 螺纹安装的配件必须符合磨光机的主轴

螺纹。对于使用法兰安装的配件，附件

的轴孔必须符合法兰的定位直径。与本

电动工具的安装硬件不匹配的附件将失

去平衡，振动过度并可能导致失控。

7. 请勿使用损坏的附件。在每次使用之

前，请检查附件，如砂轮有无碎片和裂

缝，垫片有无裂缝、破损或过度磨损，

钢丝刷有无松动或断裂的钢丝。如果工

具或附件掉落，请检查有无损坏或重新

安装一个未损坏的附件。检查和安装了

附件之后，请使旁观者以及您自己远离

旋转的附件，并以最大空载速度运行工

具一分钟。损坏的附件通常会在此测试

期间破裂。

8. 请穿戴个人劳防用品。根据应用情况，

请使用面罩、安全护目镜或安全眼镜。

根据情况佩带可防止较小的砂磨碎片或

工件碎片的防尘面罩、耳罩、手套和车

间用的围裙。护目镜必须具备可以防止

多种操作所产生的飞溅的碎片伤害到您

的能力。防尘面罩或呼吸器必须具备可

过滤操作中产生的微粒的能力。长时间

的高强度噪音可能会损伤您的听力。

9. 使旁观者远离工作区域，保持一定的安

全距离。所有进入工作区域的人员必须

穿戴个人劳防用品。工件的碎片或破损

的附件可能会飞溅到操作区域以外并导

致人身伤害。

10. 当进行作业时切割附件可能会接触到隐

藏的电线或自身的电线，请仅握住工具

的绝缘抓握表面。切割附件接触到“带

电”的电线时，电动工具上曝露的金

属部分可能也会“带电”，并使操作者

触电。

11. 勿使工具导线靠近旋转附件。否则线头

可能会被切割到或卡住，从而可能使您

的手或手臂被拖入旋转附件中。

12. 在附件完全停止之前切勿将工具放下。

旋转附件可能会碰撞地面或工作台面而

导致工具失控。

13. 您身边携带电动工具时请勿运行工具。

防止因不小心接触到旋转附件而导致衣

物被卷入，甚至伤及身体。

14. 请定期清洁工具的通风口。电机的风扇

会将灰尘带入外壳，过多的金属粉末累

积会导致电气危害。

15. 请勿在可燃物附近运行电动工具。火花

可能会点燃这些物品。

16. 请勿使用需要冷却液的附件。使用水或

其他冷却液可能会导致触电或死亡。

反弹和相关警告

反弹是正在旋转的砂轮、垫片、钢丝刷或其

他配件卡滞或卡滞时突然产生的反作用力。

卡滞会导致旋转配件的快速停止，从而导致

在卡滞点处对失控的工具产生与配件旋转方

向相反的作用力。

例如，如果工件使得砂轮卡滞，则进入卡滞

点的砂轮边缘将进入工件材料的表面，导致

砂轮跳出或弹出。根据砂轮在卡滞点的运动

方向，砂轮可能会跳向或远离操作者。在这

种情况下，砂轮也可能会破裂。

电动工具误操作和／或不正确的操作步骤或

操作条件将导致反弹，遵守以下所述的注意

事项即可避免。

a) 请牢固持握电动工具的把手，调整身

体和手臂位置以防止反弹力。如果提供

了辅助手柄，请务必使用，以在启动时

最大程度地控制反弹或转矩反作用力。

如果正确遵守注意事项，操作者可控制

转矩反作用力或反弹力。

b) 切勿将手靠近旋转的附件。附件可能

会反弹到您手上。

c) 请勿置身于发生反弹时电动工具可能

移动的区域内。反弹会在卡滞点处以与

砂轮运动方向相反的力作用于砂轮。

d) 当处理边角、锐利的边缘等处时请特

别小心。避免使附件跳跃和卡滞。边角、

锐利的边缘或附件发生跳跃可能会使旋转

的附件被钩住并导致工具失控或反弹。

e) 请勿安装锯链木雕锯片或齿状锯片。

这些锯片会发生频繁的反弹并导致工具

失控。

专用于磨削和砂轮切割操作的安全警告：

a) 请仅使用被推荐用于您的电动工具的

砂轮以及专用于所选砂轮的砂轮罩。非

专用于本电动工具的砂轮无法得到足够

的防护并无法保证安全。

b) 钹形砂轮的砂磨表面必须安装在砂轮

罩边缘的平面之下。突出于砂轮罩边缘

平面的安装不当的砂轮将不能得到充分

的保护。

c) 砂轮罩必须牢固安装到电动工具上并

放置在最为安全的位置，使得砂轮外露

的部分尽可能地少。砂轮罩可防止操作

者被砂轮碎片划伤或意外接触到砂轮和

可能会点燃衣物的火星。

d) 仅可将砂轮用于推荐的应用情况。例

如：请勿用切割砂轮的侧面进行磨削。

切割砂轮用于进行外围磨削，对这些砂

轮应用侧力可能会导致其破碎。

中文简体

e) 请务必使用未损坏的砂轮法兰，尺寸

和外形应符合您所选的砂轮。正确的砂

轮法兰可减少砂轮破裂的危险。切割砂

轮的法兰可能与磨削砂轮法兰有所不同。

f) 请勿使用从更大的电动工具上拆下来

的已磨损的砂轮。用于大型电动工具的

砂轮不适合小型工具的高速操作，可能

会爆裂。

专用于砂轮切割操作的附加安全警告：

a) 请勿“挤压”切割砂轮或对其过度施

压。请勿试图切割过深。对砂轮过度施

压会使负荷增加，使砂轮在切割时易于

扭曲或卡滞，也使发生反弹或砂轮破裂

的可能性增大。

b) 请勿与旋转的砂轮成一直线站立或站

在其后面。如果操作时砂轮的移动方向

为远离您，如果此时发生反弹，则可能

会迫使旋转的砂轮直接指向您。

c) 当砂轮卡滞或因任何原因中断切割操

作时，请关闭电动工具并将工具保持不

动，直至砂轮完全停止。当砂轮还在运

动中时，切勿试图将切割砂轮从工件中

取出，否则可能会造成反弹。研究并采

取正确的措施以避免砂轮卡滞

d) 请勿在工件中重新启动切割操作。

请等到砂轮到达全速后再小心地重新进

行切割。如果电动工具在工件中重新启

动，则砂轮可能会卡滞、移动或反弹。

e) 请支撑面板或其他大型工件以最大限

度地降低砂轮卡滞和反弹的可能。大型

工件会因自身的重量而下陷。必须在工

件下面靠近切割线和砂轮两侧工件边缘

放置支撑件。

f) 当在墙壁或其他盲区进行“袖珍切割”

时请尤其小心。凸出的砂轮可能会切割

到气管或水管、电线或其他物体，从而

导致反弹。

专用于砂磨操作的安全警告：

a) 请勿使用尺寸过大的砂纸。选择砂纸

时请遵照制造商的推荐。大于砂盘的砂

纸会有破裂的危险并可能导致砂轮片的

卡滞、破裂或反弹。

专用于钢丝刷操作的安全警告：

a) 即使在正常操作时也请小心钢丝刷的

钢毛飞出。请勿使钢丝刷过载导致钢丝

过压。钢毛很容易穿透轻薄的衣服和／

或皮肤。

b) 如果建议为钢丝刷配备护罩，请勿使

其影响到钢丝轮或在带有护罩的情况下

使用钢丝刷。根据工作负荷和离心力作

用，钢丝轮或钢丝刷在直径上可能会有

所伸展。

附加安全警告：

17. 当使用钹形砂轮时，请务必且仅可使用

玻璃钢砂轮。

18. 使用本磨光机时切勿使用机碗形砂轮。

此类砂轮不适用于本磨光机，强行使用

可能会导致严重的人身伤害。

19. 请小心勿损坏主轴、法兰（尤其是安装

表面）或锁紧螺母。这些部件损坏可能

会导致砂轮破裂。

20. 打开开关前，请确认砂轮未与工件接触。

21. 在实际的工件上使用工具之前，请先让

工具空转片刻。请注意，振动或摇摆可

能表示安装不当或砂轮不平衡。

22. 请使用砂轮的指定表面来执行磨削。

23. 运行中的工具不可离手放置。只可在手

握工具的情况下操作工具。

24. 操作之后，请勿立刻触摸工件，因为其

可能会非常烫，导致烫伤皮肤。

25. 请遵照制造商的说明进行正确安装和使

用砂轮。请小心处理和存放砂轮。

26. 请勿使用分离式卸套或适配器来适配大

孔砂轮。

27. 请仅使用本工具指定的法兰。

28. 对于要安装螺纹孔砂轮的工具，请确保砂

轮中的螺纹足够长，可配合主轴的长度。

29. 检查并确认工件被正确支撑。

30. 请注意，关闭工具之后，砂轮还会继续

旋转。

31. 如果工作场所非常热并且潮湿，或者被

导电灰尘严重污染，请使用短路断路器

（30 mA）以保障操作者的人身安全。

32. 请勿在任何含有石棉的材料上使用本

工具。

33. 当使用切割砂轮时，请务必同时使用国

内法规规定的集尘砂轮罩。

34. 切割盘不得受到任何侧向的压力。

请保留此说明书。

警告：请勿为图方便或因对产品足

够熟悉（由于重复使用而获得的经验）

而不严格遵循相关产品安全规则。使用

不当或不遵循使用说明书中的安全规则

会导致严重的人身伤害。

中文简体

功能描述

小心：

• 在调节或检查工具功能之前，请务必关

闭工具电源开关并拔下电源插头。

轴锁

► 图片1: 1. 轴锁

小心：

• 切勿在主轴进行转动时启用轴锁。否则

可能会损坏工具。

安装或拆卸附件时，按下轴锁，防止主轴

旋转。

开关操作

小心：

• 插上工具电源插头之前，请务必确认

开关扳机能够正常工作，松开时能回

到“OFF”（关闭）位置。

• 长时间使用时，可将开关锁定

在“ON”（开启）位置，使操作更加

舒适。将工具锁定在“ON”（开启）

位置时，请小心并务必抓牢工具。

► 图片2: 1. 开关扳机 2. 锁定杆

对于带自锁开关的工具

不适用于欧洲地区

要启动工具时，只需扣动开关扳机（沿B方

向）即可。松开开关扳机，工具即停止。连

续操作时，扣动开关扳机（B方向）并按下

锁定杆（A方向）。要从锁定位置停止工具

时，可将开关扳机扣到底（B方向），然后

松开开关扳机。

对于带锁止开关的工具

为避免使用者不小心扣动开关扳机，本工具

配置了锁定杆。

要启动工具时，按下锁定杆（A方向），然

后扣动开关扳机（B方向）即可。松开开关

扳机，工具即停止。

对于带自锁和锁止开关的工具

不适用于欧洲地区

为避免使用者不小心扣动开关扳机，本工具

配置了锁定杆。

要启动工具时，按下锁定杆（A方向），然

后扣动开关扳机（B方向）即可。松开开关

扳机，工具即停止。

连续操作时，按下锁定杆（A方向），然后

扣动开关扳机（B方向），再进一步按下锁

定杆（A方向）。

要从锁定位置停止工具时，可将开关扳机扣

到底（B方向），然后松开。

注： GA7020S、GA9020S、GA7020SF和

GA9020SF型号在启动后会开始慢速运行。

软启动功能可确保设备操作更加流畅，同时

减少操作员疲劳感。

装配

小心：

• 对工具进行任何装配操作前请务必确认

机器已关闭且已拔下电源插头。

安装侧把手（手柄）

► 图片3

小心：

• 在进行操作之前，请务必将侧把手牢固

地安装在工具上。

在如图所示的工具位置上拧紧侧把手。

中文简体

安装或拆卸砂轮罩（用于钹形砂轮、

多用砂轮片、钢丝轮刷/切割砂轮、金

刚石砂轮）

警告：

• 当使用钹形砂轮/多用砂轮片、弹性砂轮

片或钢丝轮刷时，必须将砂轮罩安装到

工具上，确保砂轮罩的封闭侧始终朝向

操作者所在位置。

• 使用切割砂轮／金刚石砂轮时，请务必

仅使用专用于切割砂轮的砂轮罩。（一

些欧洲国家允许在使用金刚石砂轮时使

用普通砂轮罩。请遵循您所在国家/地

区的法规。）

对于带锁定螺丝型砂轮罩的工具

► 图片4: 1. 砂轮罩 2. 螺丝 3. 轴承箱

安装砂轮罩时，将砂轮罩环上的凸缘片对准

轴承箱上的槽口。然后根据作业情况，旋转

砂轮罩至可以保护操作者的角度。确保已将

螺丝拧紧。

拆下砂轮罩时，按与安装步骤相反的顺序

进行。

对于带夹杆型砂轮罩的工具

► 图片5: 1. 砂轮罩 2. 轴承箱 3. 螺母

4. 夹杆

► 图片6: 1. 螺母 2. 夹杆

拧松砂轮罩上的夹杆。安装砂轮罩时，将砂

轮罩环上的凸缘片对准轴承箱上的槽口。然

后将砂轮罩旋转到如图所示的位置。拧紧砂

轮罩上的夹杆，以固定砂轮罩。如果该杆过

紧或过松，无法固定砂轮罩时，请用扳手拧

松或拧紧螺母来调节砂轮罩环的松紧度。

拆下砂轮罩时，按与安装步骤相反的顺序

进行。

安装或拆下钹形砂轮／多用砂轮片

（附件）

► 图片7: 1. 锁紧螺母 2. 钹形砂轮 3. 表面

法兰 4. 内法兰

将内法兰安装到主轴上。将砂轮／砂轮片安装

在内法兰上，并将锁紧螺母与主轴拧紧固定。

拧紧锁紧螺母时，需用力按住轴锁以防主轴

转动，然后用锁紧螺母扳手按顺时针拧紧。

► 图片8: 1. 锁紧螺母扳手 2. 轴锁

拆下砂轮时，按与安装步骤相反的顺序进行。

表面法兰

GA7020F、GA7020SF、GA9020F和

GA9020SF型号有标配一个表面法兰。与传

统型法兰相比，表面法兰的锁紧螺母仅需花

1/3的力气即可松开。

安装或拆卸砂轮片（选购附件）

注：

• 请使用本手册中指定的砂光机配件。这

些配件需要另行购买。

► 图片9: 1. 锁紧螺母 2. 砂轮片 3. 橡胶垫

在主轴上安装橡胶垫。将砂轮片安装在橡胶

垫上并将锁紧螺母紧固在主轴上。拧紧锁紧

螺母时，需用力按住轴锁以防主轴转动，然

后用锁紧螺母扳手按顺时针拧紧。

要拆下砂轮片时，请按与安装时相反的步骤

进行。

操作

警告：

• 操作工具时切勿过度用力。工具的重量

可施加足够的压力。施加过度的压力会

导致砂轮破碎的危险。

• 如果在磨削时工具跌落，一定要更换

砂轮。

• 切勿用磨盘或砂轮敲击工件。

• 在进行角部或锐边等部分的加工作业时

应避免发生砂轮弹跳和受阻现象，以防

砂轮失控而反弹。

• 本工具严禁使用锯木锯片和其他锯片。

在磨光机上使用时，这些锯片经常会反

冲，并使工具失去控制导致人身伤害。

小心：

• 切勿在工具与工件接触的情况下接通

工具电源，这样会导致操作者受伤。

• 操作时请务必佩带护目镜或口罩。

• 操作完毕后，请务必关闭工具，等到

砂轮完全停止转动后再把工具放下。

中文简体

磨削和砂磨操作

请务必用一只手握持工具后把手，另一只手

握持侧把手，将工具握紧。打开工具开关，

然后使用砂轮或砂轮片加工工件。

通常砂轮或砂轮片的边缘应与工件表面保持

约15°的角度。

在新砂轮的磨合期，不要沿B方向操作砂轮，

否则砂轮会切入工件内。当砂轮边缘经过使

用被磨圆后，即可按A方向和B方向任意操作

砂轮。

► 图片10

杯形钢丝刷（选购附件）的操作

小心：

• 在无负载的情况下运行工具来检查钢丝

刷，确保操作时无人站立在钢丝刷前面

或与其站立在同一直线上。

• 请勿使用损坏或失衡的钢丝刷。使用损

坏的钢丝刷会增加因接触损坏的刷丝而

造成人身伤害的风险。

► 图片11: 1. 杯形钢丝刷

拔下工具电源并将其倒置以便操作主轴。拆

下主轴上的所有附件。将杯形钢丝刷安装至

主轴并用提供的扳手加以紧固。使用钢丝刷

时，避免施加过大的压力，否则会导致钢丝

过度弯折并造成过早破裂。

钢丝轮刷（选购附件）的操作

小心：

• 在工具无负载情况下运行工具来检查钢

丝轮刷，确保操作时无人站立在钢丝轮

刷前面或与其站立在同一直线上。

• 请勿使用损坏或失衡的钢丝轮刷。使用

损坏的钢丝轮刷会增加因接触损坏的刷

丝而造成人身伤害的风险。

• 务必将钢丝轮刷与砂轮罩一同使用，并

确保砂轮直径适合砂轮罩。在使用中砂

轮可能会碎裂，砂轮罩可降低造成人身

伤害的风险。

► 图片12: 1. 钢丝轮刷

拔下工具电源并将其倒置以便操作主轴。拆

下主轴上的所有附件。将钢丝轮刷紧固在主

轴上并使用扳手加以紧固。

使用钢丝轮刷时，避免施加过大的压力，这

会导致钢丝过度弯折并造成过早破裂。

切割砂轮／金刚石砂轮（选购附

件）的操作

警告：

• 使用切割砂轮／金刚石砂轮时，请务必

仅使用专用于切割砂轮的砂轮罩。（一

些欧洲国家允许在使用金刚石砂轮时使

用普通砂轮罩。请遵循您所在国家/地

区的法规。）

• 切勿使用切割砂轮进行侧面磨削。

• 请勿“挤压”砂轮或对其过度施压。请

勿试图切割过深。对砂轮过度施压会导

致负载增大，这样在切割时砂轮容易出

现扭曲或卡滞，同时发生反弹、砂轮破

损以及电机过热的可能性也会增大。

• 请勿在工件中启动切割操作。请待砂

轮达到全速后再小心将其向前移动到

工件表面上进行切割。如果电动工具

在工件中启动，则砂轮可能会卡滞、

移动或反弹。

• 在切割操作时，切勿改变砂轮的角度。

对切割砂轮施以侧压（磨削操作中）将

导致砂轮裂开和破损，从而导致严重的

人身伤害。

• 操作时，金刚石砂轮应与被切割材料相

垂直。

将内法兰安装到主轴上。将砂轮／砂轮片安

装在内法兰上，并将锁紧螺母与主轴拧紧

固定。

► 图片13: 1. 锁紧螺母 2. 切割砂轮／金刚

石砂轮 3. 内法兰 4. 切割砂轮／

金刚石砂轮用砂轮罩

中文简体

以下内容适用于澳大利亚和新西兰地区

安装或拆卸切割砂轮／金刚石砂轮

（选购附件）

► 图片14: 1. 锁紧螺母 2. 外法兰78 3. 切

割砂轮／金刚石砂轮 4. 内法兰

78 5. 切割砂轮／金刚石砂轮用

砂轮罩

保养

小心：

• 检查或保养工具之前，请务必关闭工

具电源开关并拔下插头。

• 切勿使用汽油、苯、稀释剂、酒精或

类似物品清洁工具。否则可能会导致

工具变色、变形或出现裂缝。

工具及其通风孔应保持清洁。定期清洁通风

口或在通风口开始被堵塞时进行清洁。

► 图片15: 1. 排气孔 2. 进气孔

更换碳刷

► 图片16: 1. 换向器 2. 绝缘接头 3. 碳刷

当碳刷内部的树脂绝缘接头暴露并与换向器

接触时，会自动关闭电机。发生这种情况

时，应更换两边碳刷。请保持碳刷清洁并使

其在碳刷夹内能自由滑动。两个碳刷应同时

更换。请仅使用相同的碳刷。

使用螺丝刀拆下碳刷夹盖。取出已磨损的碳

刷，插入新的碳刷，然后紧固碳刷夹盖。

► 图片17: 1. 碳刷夹盖 2. 螺丝刀

为了保证产品的安全性与可靠性，维修、

任何其他的维修保养或调节需由Makita（牧

田）授权的维修服务中心完成。务必使用

Makita（牧田）的替换部件。

选购附件

小心：

• 这些附件或装置专用于本说明书所

列的Makita（牧田）电动工具。其他

附件或装置的使用可能会有人身伤

害风险。仅可将附件或装置用于规定

目的。

如您需要了解更多关于这些选购附件的信

息，请咨询当地的Makita（牧田）维修服务

中心。

ページが読み込まれています...

Makita GA7020 ユーザーマニュアル

ブランド: Makita

モデル: GA7020

カテゴリー: パワーツール

タイプ: ユーザーマニュアル

PDFをダウンロードします

報告

Makita GA7020 ユーザーマニュアル

Makita GA7020 ユーザーマニュアル

関連論文

その他のドキュメント