Bosch GWS 7-125 Professional: English

English: Bosch GWS 7-125 Professional

OBJ_BUCH-1188-003.book Page 11 Tuesday, August 13, 2013 2:49 PM

English | 11

Nur für EU-Länder:

Personal safety

Gemäß der Europäischen Richtlinie

Stay alert, watch what you are doing and use common

2012/19/EU über Elektro- und Elektronik-

sense when operating a power tool. Do not use a power

Altgeräte und ihrer Umsetzung in nationales

tool while you are tired or under the influence of drugs,

Recht müssen nicht mehr gebrauchsfähige

alcohol or medication. A moment of inattention while op-

Elektrowerkzeuge getrennt gesammelt und

erating power tools may result in serious personal injury.

einer umweltgerechten Wiederverwertung

Use personal protective equipment. Always wear eye

zugeführt werden.

protection. Protective equipment such as dust mask,

Änderungen vorbehalten.

non-skid safety shoes, hard hat, or hearing protection

used for appropriate conditions will reduce personal inju-

ries.

Prevent unintentional starting. Ensure the switch is in

English

the off-position before connecting to power source

and/or battery pack, picking up or carrying the tool.

Carrying power tools with your finger on the switch or en-

General Power Tool Safety Warnings

ergising power tools that have the switch on invites acci-

Read all safety warnings and all in-

dents.

WARNING

structions. Failure to follow the warnings

Remove any adjusting key or wrench before turning

and instructions may result in electric shock, fire and/or seri-

the power tool on. A wrench or a key left attached to a ro-

ous injury.

tating part of the power tool may result in personal injury.

Save all warnings and instructions for future reference.

Do not overreach. Keep proper footing and balance at

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

all times. This enables better control of the power tool in

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

unexpected situations.

power tool.

Dress properly. Do not wear loose clothing or jewel-

lery. Keep your hair, clothing and gloves away from

Work area safety

moving parts. Loose clothes, jewellery or long hair can be

Keep work area clean and well lit. Cluttered or dark areas

caught in moving parts.

invite accidents.

If devices are provided for the connection of dust ex-

Do not operate power tools in explosive atmospheres,

traction and collection facilities, ensure these are con-

such as in the presence of flammable liquids, gases or

nected and properly used. Use of dust collection can re-

dust. Power tools create sparks which may ignite the dust

duce dust-related hazards.

or fumes.

Power tool use and care

Keep children and bystanders away while operating a

power tool. Distractions can cause you to lose control.

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

for your application. The correct power tool will do the

Electrical safety

job better and safer at the rate for which it was designed.

Power tool plugs must match the outlet. Never modify

Do not use the power tool if the switch does not turn it

the plug in any way. Do not use any adapter plugs with

on and off. Any power tool that cannot be controlled with

earthed (grounded) power tools. Unmodified plugs and

the switch is dangerous and must be repaired.

matching outlets will reduce risk of electric shock.

Disconnect the plug from the power source and/or the

Avoid body contact with earthed or grounded surfaces,

battery pack from the power tool before making any

such as pipes, radiators, ranges and refrigerators.

adjustments, changing accessories, or storing power

There is an increased risk of electric shock if your body is

tools. Such preventive safety measures reduce the risk of

earthed or grounded.

starting the power tool accidentally.

Do not expose power tools to rain or wet conditions.

Store idle power tools out of the reach of children and

Water entering a power tool will increase the risk of electric

do not allow persons unfamiliar with the power tool or

shock.

these instructions to operate the power tool. Power

Do not abuse the cord. Never use the cord for carrying,

tools are dangerous in the hands of untrained users.

pulling or unplugging the power tool. Keep cord away

Maintain power tools. Check for misalignment or bind-

from heat, oil, sharp edges and moving parts. Damaged

ing of moving parts, breakage of parts and any other

or entangled cords increase the risk of electric shock.

condition that may affect the power tool’s operation. If

When operating a power tool outdoors, use an exten-

damaged, have the power tool repaired before use.

sion cord suitable for outdoor use. Use of a cord suitable

Many accidents are caused by poorly maintained power

for outdoor use reduces the risk of electric shock.

tools.

If operating a power tool in a damp location is unavoid-

Keep cutting tools sharp and clean. Properly maintained

able, use a residual current device (RCD) protected

cutting tools with sharp cutting edges are less likely to bind

supply. Use of an RCD reduces the risk of electric shock.

and are easier to control.

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12 | English

Use the power tool, accessories and tool bits etc. in ac-

Wear personal protective equipment. Depending on

cordance with these instructions, taking into account

application, use face shield, safety goggles or safety

the working conditions and the work to be performed.

glasses. As appropriate, wear dust mask, hearing pro-

Use of the power tool for operations different from those

tectors, gloves and shop apron capable of stopping

intended could result in a hazardous situation.

small abrasive or workpiece fragments. The eye protec-

To save energy, only switch the power tool on when using

tion must be capable of stopping flying debris generated

it.

by various operations. The dust mask or respirator must be

capable of filtrating particles generated by your operation.

Service

Prolonged exposure to high intensity noise may cause

Have your power tool serviced by a qualified repair per-

hearing loss.

son using only identical replacement parts. This will en-

Keep bystanders a safe distance away from work area.

sure that the safety of the power tool is maintained.

Anyone entering the work area must wear personal

protective equipment. Fragments of workpiece or of a

broken accessory may fly away and cause injury beyond

Safety Warnings for Angle Grinder

immediate area of operation.

Safety Warnings common for Grinding, Sanding,

Hold the power tool by insulated gripping surfaces on-

ly, when performing an operation where the cutting ac-

Wire Brushing or Abrasive Cutting Off Operations

cessory may contact hidden wiring or its own cord. Cut-

This power tool is intended to function as a grinder,

ting accessory contacting a “live” wire may make exposed

sander, wire brush or cut-off tool. Read all safety warn-

metal parts of the power tool “live” and could give the op-

ings, instructions, illustrations and specifications pro-

erator an electric shock.

vided with this power tool. Failure to follow all instruc-

Position the cord clear of the spinning accessory. If you

tions listed below may result in electric shock, fire and/or

lose control, the cord may be cut or snagged and your hand

serious injury.

or arm may be pulled into the spinning wheel.

Operations such as polishing are not recommended to

Never lay the power tool down until the accessory has

be performed with this power tool. Operations for which

come to a complete stop. The spinning wheel may grab

the power tool was not designed may create a hazard and

the surface and pull the power tool out of your control.

cause personal injury.

Do not run the power tool while carrying it at your side.

Do not use accessories which are not specifically de-

Accidental contact with the spinning accessory could snag

signed and recommended by the tool manufacturer.

your clothing, pulling the accessory into your body.

Just because the accessory can be attached to your power

tool, it does not assure safe operation.

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

fan will draw the dust inside the housing and excessive ac-

The rated speed of the accessory must be at least equal

cumulation of powdered metal may cause electrical haz-

to the maximum speed marked on the power tool. Ac-

ards.

cessories running faster than their rated speed can break

and fly apart.

Do not operate the power tool near flammable materi-

als. Sparks could ignite these materials.

The outside diameter and the thickness of your acces-

sory must be within the capacity rating of your power

Do not use accessories that require liquid coolants. Us-

tool. Incorrectly sized accessories cannot be adequately

ing water or other liquid coolants may result in electrocu-

guarded or controlled.

tion or shock.

Threaded mounting of accessories must match the

Kickback and related warnings

grinder spindle thread. For accessories mounted by

Kickback is a sudden reaction to a pinched or snagged ro-

flanges, the arbour hole of the accessory must fit the

tating wheel, backing pad, brush or any other accessory.

locating diameter of the flange. Accessories that do not

Pinching or snagging causes rapid stalling of the rotating

match the mounting hardware of the power tool will run out

accessory which in turn causes the uncontrolled power

of balance, vibrate excessively and may cause loss of con-

tool to be forced in the direction opposite of the accesso-

trol.

ry’s rotation at the point of the binding.

Do not use a damaged accessory. Before each use in-

For example, if an abrasive wheel is snagged or pinched by

spect the accessory such as abrasive wheels for chips

the workpiece, the edge of the wheel that is entering into

and cracks, backing pad for cracks, tear or excess

the pinch point can dig into the surface of the material

wear, wire brush for loose or cracked wires. If power

causing the wheel to climb out or kick out. The wheel may

tool or accessory is dropped, inspect for damage or in-

either jump toward or away from the operator, depending

stall an undamaged accessory. After inspecting and in-

on direction of the wheel’s movement at the point of pinch-

stalling an accessory, position yourself and bystanders

ing. Abrasive wheels may also break under these condi-

away from the plane of the rotating accessory and run

tions.

the power tool at maximum no-load speed for one min-

Kickback is the result of power tool misuse and/or incor-

ute. Damaged accessories will normally break apart during

rect operating procedures or conditions and can be avoid-

this test time.

ed by taking proper precautions as given below.

1 609 92A 0EE | (13.8.13) Bosch Power Tools

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English | 13

Maintain a firm grip on the power tool and position your

Do not position your body in line with and behind the

body and arm to allow you to resist kickback forces. Al-

rotating wheel. When the wheel, at the point of operation,

ways use auxiliary handle, if provided, for maximum

is moving away from your body, the possible kickback may

control over kickback or torque reaction during

propel the spinning wheel and the power tool directly at

start-up. The operator can control torque reactions or

you.

kickback forces, if proper precautions are taken.

When wheel is binding or when interrupting a cut for

Never place your hand near the rotating accessory. Ac-

any reason, switch off the power tool and hold the pow-

cessory may kickback over your hand.

er tool motionless until the wheel comes to a complete

Do not position your body in the area where power tool

stop. Never attempt to remove the cut-off wheel from

will move if kickback occurs. Kickback will propel the

the cut while the wheel is in motion otherwise kickback

tool in direction opposite to the wheel’s movement at the

may occur. Investigate and take corrective action to elimi-

point of snagging.

nate the cause of wheel binding.

Use special care when working corners, sharp edges,

Do not restart the cutting operation in the workpiece.

etc. Avoid bouncing and snagging the accessory. Cor-

Let the wheel reach full speed and carefully re-enter

ners, sharp edges or bouncing have a tendency to snag the

the cut. The wheel may bind, walk up or kickback if the

rotating accessory and cause loss of control or kickback.

power tool is restarted in the workpiece.

Do not attach a saw chain woodcarving blade or

Support panels or any oversized workpiece to minimize

toothed saw blade. Such blades create frequent kickback

the risk of wheel pinching and kickback. Large work-

and loss of control.

pieces tend to sag under their own weight. Supports must

be placed under the workpiece near the line of cut and near

Safety warnings specific for Grinding and Abra-

the edge of the workpiece on both sides of the wheel.

sive Cutting-Off operations

Use extra caution when making a “pocket cut” into ex-

Use only wheel types that are recommended for your

isting walls or other blind areas. The protruding wheel

power tool and the specific guard designed for the se-

may cut gas or water pipes, electrical wiring or objects that

lected wheel. Wheels for which the power tool was not de-

can cause kickback.

signed cannot be adequately guarded and are unsafe.

Safety warnings specific for sanding operations

The grinding surface of the centre depressed wheels

Do not use excessively oversized sanding disc paper.

must be mounted below the plane of the guard lip. An

Follow manufacturers recommendations, when select-

improperly mounted wheel that projects through the plane

ing sanding paper. Larger sanding paper extending be-

of the guard lip cannot be adequately protected.

yond the sanding pad presents a laceration hazard and

The guard must be securely attached to the power tool

may cause snagging, tearing of the disc, or kickback.

and positioned for maximum safety, so the least

amount of wheel is exposed towards the operator. The

Safety warnings specific for wire brushing

guard helps to protect operator from broken wheel frag-

operations

ments, accidental contact with wheel and sparks that

Be aware that wire bristles are thrown by the brush

could ignite clothing.

even during ordinary operation. Do not overstress the

Wheels must be used only for recommended applica-

wires by applying excessive load to the brush. The wire

tions. For example: do not grind with the side of the

bristles can easily penetrate light clothing and/or skin.

cut-off wheel. Abrasive cut-off wheels are intended for

If the use of a guard is recommended for wire brushing,

peripheral grinding; side forces applied to these wheels

do not allow any interference of the wire wheel or

may cause them to shatter.

brush with the guard. Wire wheel or brush may expand in

Always use undamaged wheel flanges that are of cor-

diameter due to work load and centrifugal forces.

rect size and shape for your selected wheel. Proper

wheel flanges support the wheel thus reducing the possi-

bility of wheel breakage. Flanges for cut-off wheels may be

Additional Safety and Working In-

different from grinding wheel flanges.

structions

Do not use worn down reinforced wheels from larger

Observe correct mains voltage! The voltage of the pow-

power tools. Wheels intended for larger power tools are

er source must agree with the voltage specified on the

not suitable for the higher speed of a smaller tool and may

nameplate of the machine. Power tools marked with

burst.

230 V can also be operated with 220 V.

Additional safety warnings specific for abrasive

Use suitable detectors to determine if utility lines are

cutting off operations

hidden in the work area or call the local utility company

Do not “jam” the cut-off wheel or apply excessive pres-

for assistance. Contact with electric lines can lead to fire

sure. Do not attempt to make an excessive depth of cut.

and electric shock. Damaging a gas line can lead to explo-

Overstressing the wheel increases the loading and suscep-

sion. Penetrating a water line causes property damage or

tibility to twisting or binding of the wheel in the cut and the

may cause an electric shock.

possibility of kickback or wheel breakage.

Bosch Power Tools 1 609 92A 0EE | (13.8.13)

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14 | English

Release the On/Off switch and set it to the off position

Provide for sufficient dust extraction when cutting

when the power supply is interrupted, e. g., in case of a

stone. Wear a dust respirator.

power failure or when the mains plug is pulled. This pre-

Products sold in GB only: Your product is fitted with an

vents uncontrolled restarting.

BS 1363/A approved electric plug with internal fuse (ASTA

Dusts from materials such as lead-containing coatings,

approved to BS 1362).

some wood types, minerals and metal can be harmful to

If the plug is not suitable for your socket outlets, it should be

one’s health and cause allergic reactions, lead to res-

cut off and an appropriate plug fitted in its place by an author-

piratory infections and/or cancer. Materials containing

ised customer service agent. The replacement plug should

asbestos may only be worked by specialists.

have the same fuse rating as the original plug.

As far as possible, use a dust extraction system suita-

The severed plug must be disposed of to avoid a possible

ble for the material.

shock hazard and should never be inserted into a mains sock-

Provide for good ventilation of the working place.

et elsewhere.

It is recommended to wear a P2 filter-class respirator.

Products sold in AUS and NZ only: Use a residual current de-

Observe the relevant regulations in your country for the

vice (RCD) with a rated residual current of 30 mA or less.

materials to be worked.

Prevent dust accumulation at the workplace. Dusts can

Symbols

easily ignite.

The following symbols are important for reading and under-

Secure the workpiece. A workpiece clamped with clamp-

standing the operating instructions. Please take note of the

ing devices or in a vice is held more secure than by hand.

symbols and their meaning. The correct interpretation of the

After breakage of the grinding disc during operation or

symbols will help you to use the machine in a better and safer

damage to the holding fixtures on the protection

manner.

guard/power tool, the machine must promptly be sent to

an after-sales service agent for maintenance for address-

Symbol Meaning

es, see section “After-sales Service and Application Ser-

Article number

vice”.

Adjust protection guard in such a manner that sparking

toward the operator is prevented.

Do not touch grinding and cutting discs before they

Read all safety warnings and all instruc-

have cooled down. The discs can become very hot while

tions

working.

Actuate the spindle lock button only when the grinder

spindle is at a standstill. Otherwise, the machine may be-

Before any work on the machine itself,

come damaged.

pull the mains plug from the socket out-

After mounting the grinding tool and before switching

let

on, check that the grinding tool is correctly mounted

Wear protective gloves

and that it can turn freely. Make sure that the grinding

tool does not graze against the protection guard or oth-

er parts.

When operating the machine with power from mobile gen-

Always wear ear protection

erators, loss of performance or untypical behavior can oc-

cur upon switching on.

By applying too high application force, the machine can

Wear safety glasses/goggles

be subject to overload. Overload can lead to overheat-

ing and damage of the power tool. After heavily strain-

ing the power tool, continue to run it at no-load for sev-

eral minutes in order to cool it down.

Movement direction

Do not use the power tool with a cut-off stand.

Never use a cutting disc for roughing.

The quick-clamping nut may be used only for grinding

Apply strength for the workstep.

or cutting discs. Use only a flawless, undamaged quick-

clamping nut.

For operations with the rubber sanding plate or with

Low speed

the cup brush/wheel brush/flap disc, always mount the

hand guard .

For cutting with bonded abrasives, always use a pro-

tection guard for cutting.

1 609 92A 0EE | (13.8.13) Bosch Power Tools

English | 15

Symbol Meaning

Delivery Scope

High speed

Angle grinder, protection guard, auxiliary handle.

Special protection guards, application tools and other acces-

sories shown or described are not part of the standard deliv-

Switching On

ery scope.

A complete overview of accessories can be found in our ac-

Switching Off

cessories program.

On/Off switch lock-on

Intended Use

The machine is intended for roughing metal, stone and ceram-

Releasing the lock-on function of the

ic materials and for drilling tiles.

On/Off switch

For cutting with bonded abrasives, a special cutting guard

Prohibited action

(accessory) must be used.

When cutting in stone, provide for sufficient dust extraction.

Together with the hand guard (accessory), the machine can

Permitted action

be used for brushing and grinding/sanding with elastic sand-

ing plates.

The machine is suitable only for working without water.

Next step of action

Technical Data

P

1

Rated power input

The technical data of the machine are listed in the table on

P

2

Output power

page 242.

n Rated speed

The values given are valid for a nominal voltage [U] of 230 V.

n

v

Speed control adjustment

For different voltages and models for specific countries,

l = Grinder spindle length

these values can vary.

d

1

= Grinder spindle diameter

Declaration of Conformity

D = Max. grinding disc diameter

We declare under our sole responsibility that the product de-

d

2

= Inner disc diameter

scribed under “Technical Data” is in conformity with the fol-

lowing standards or standardization documents: EN 60745

Speed preselection

according to the provisions of the directives 2011/65/EU,

2004/108/EC, 2006/42/EC.

Technical file (2006/42/EC) at:

Additional information

Robert Bosch GmbH, PT/ETM9,

D-70745 Leinfelden-Echterdingen

Surface grinding

Grinding/sanding with sanding sheet

Weight according to EPTA-Procedure

01/2003 with vibration-damping auxil-

iary handle

Weight according to EPTA-Procedure

Robert Bosch GmbH, Power Tools Division

01/2003 with standard-auxiliary handle

D-70745 Leinfelden-Echterdingen

14.08.2013

/II Symbol for protection class II (com-

pletely insulated)

Noise/Vibration Information

L

wA

Sound power level

The measured values of the machine are listed in the table on

L

pA

Sound pressure level

page 242.

KUncertainty

Noise and vibrational values (vector sum of three directions)

a

Vibration total value

determined according to EN 60745.

h

The vibration emission level given in this information sheet

has been measured in accordance with a standardised test

given in EN 60745 and may be used to compare one tool with

another. It may be used for a preliminary assessment of expo-

sure.

Bosch Power Tools 1 609 92A 0EE | (13.8.13)

d

1

l

d

2

D

1

2

OBJ_BUCH-1188-003.book Page 15 Tuesday, August 13, 2013 2:49 PM

Henk Becker

Helmut Heinzelmann

Executive Vice President

Head of Product Certification

Engineering

PT/ETM9

16 | English

The declared vibration emission level represents the main ap-

when it is running but not actually doing the job. This may sig-

plications of the tool. However if the tool is used for different

nificantly reduce the exposure level over the total working pe-

applications, with different accessories or poorly maintained,

riod.

the vibration emission may differ. This may significantly in-

Identify additional safety measures to protect the operator

crease the exposure level over the total working period.

from the effects of vibration such as: maintain the tool and the

An estimation of the level of exposure to vibration should also

accessories, keep hands warm, organise work patterns.

take into account the times when the tool is switched off or

Mounting and Operation

The following table indicates the action objectives for mounting and operation of the power tool. The instructions for each action

objective are shown aside. Depending on the type of application, various instruction combinations are required. Observe the

safety instructions.

Action

Figure

Please observe Page

Grinding, preparation 1 243 244

Cutting, preparation 2 245 246

Cutting stone, brick and tiles,

3 247 248

preparation (recommendation)

Removing paint, preparation 4 249

Removing rust, preparation 5 250

Drilling tiles, preparation 6 251

Mounting the quick-clamping nut 7 251 252

Dismounting the quick-clamping

8252

nut

1 609 92A 0EE | (13.8.13) Bosch Power Tools

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OBJ_BUCH-1188-003.book Page 17 Tuesday, August 13, 2013 2:49 PM

English | 17

Action

Figure

Please observe Page

Switching On and Off 9 252

Adjusting the speed preselection 10 253

Working effectively with the angle

11 254

grinder

Grey-marked area: Handle

12 254

(insulated gripping surface)

Selecting the admissible grinding

13 255

tool

Selecting Accessories 256 257

Maintenance and Cleaning

Great Britain

Robert Bosch Ltd. (B.S.C.)

For safe and proper working, always keep the machine

P.O. Box 98

and ventilation slots clean.

Broadwater Park

In extreme conditions, always use dust extraction as far

North Orbital Road

as possible. Blow out ventilation slots frequently and in-

Denham

stall a residual current device (RCD). When working met-

Uxbridge

als, conductive dust can settle in the interior of the power

UB 9 5HJ

tool. The total insulation of the power tool can be impaired.

Tel. Service: (0844) 7360109

Please store and handle the accessory(-ies) carefully.

Fax: (0844) 7360146

If the replacement of the supply cord is necessary, this has to

E-Mail: boschservicecentre@bosch.com

be done by Bosch or an authorized Bosch service agent in or-

Ireland

der to avoid a safety hazard.

Origo Ltd.

Unit 23 Magna Drive

After-sales Service and Application

Magna Business Park

City West

Service

Dublin 24

In all correspondence and spare parts order, please always in-

Tel. Service: (01) 4666700

clude the 10-digit article number given on the type plate of

Fax: (01) 4666888

the machine.

Our after-sales service responds to your questions concern-

ing maintenance and repair of your product as well as spare

parts. Exploded views and information on spare parts can al-

so be found under:

www.bosch-pt.com

Bosch’s application service team will gladly answer questions

concerning our products and their accessories.

Bosch Power Tools 1 609 92A 0EE | (13.8.13)