Bosch 7-115 Operating instructions

Brand: Bosch

Model: 7-115

Category: Straight grinders

Type: Operating instructions

GWS 6-115_GWS 7-115 09.12.03, 15:061

Atenção! Leia antes de usar.

¡Atención! Lea antes de usar.

Attention! Read before using.

GWS 6-115

GWS 7-115

Manual de instruções

Manual de instrucciones

Operating instructions

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Figura ilustrativa

GWS 6-115_GWS 7-115 09.12.03, 15:062

* Apenas para máquinas com eixo de trabalho com roscade 5/8"

*

Solamente para aparatos con husilo 5/8"

Only for tools with spindle thread 5/8"

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Technical data

Machine components

1 Spindle lock

2 On/ Off switch

3 Auxiliary handle

4 Grinder spinde

5 Protective Guard (GWS 6-115)

5.1 Screw (GWS 6-115)

6 Protective Guard (GWS 7-115)

6.1 Clamping lever (GWS 7-115)

7 Mounting ange

8 Roughing/cutting disc**

9 Clamping nut

10 quick clamping nut**

11 Pinm sponner

12 Hand protector**

13 Rubber sanding plate**

14 Sanding disc**

15 Round nut*

16 Auxiliary handle with vibration absorption**

**Not all of the accessories ilustrated or described are in-

cluded as standard delivery.

Intended use

The machine is intended for cutting, roughing and brushing

metal and stone materials without using water. For cutting

stone, a cutting guide is required.

Noise/vibration information

Measured values determined according to EN 50 144.

Typically the A-weighted noise levels of the product are: sound

pressure level: 88 dB (A); sound power level: 101 dB (A).

Wear hearing protection!

The typical weighted acceleration is 5.0 m/s

When using the auxiliary handle with vibration absorption,

the hand/arm vibration of the power tool used is typically

less than 2.5 m/s

For your safety

Working safely with this machine is possible only when

the operating and safety information are read completely

and the instructions contained therein are

strictly followed. In addition, the general

safety notes on page 17 must be observed.

Before using for the rst time, ask for a prac-

tical demonstration.

• Wear protective glasses and hearing protection.

• Wear protective gloves and sturdy shoes.

• When necessary, also wear an apron.

• The dust that is produced while working can be detri-

mental to health, inammable or explosive. Suitable safe-

ty measures are required.

Examples: Some dusts are regarded as carcinogenic. Use

suitable dust/ chip extraction and wear a dust respirator.

• Dust from light alloys can burn or explode. Always keep

the work place clean, as blends of materials are particu-

larly dangerous.

• If the mains cable is damaged or cut through while work-

ing, do not touch the cable but immediately pull the mains

plug. Never use the machine with a damaged cable.

• Connect machines that are used in the open via a re-

sidual current device (RCD) with an actuating current of

30 mA maximum. Use only extension cables that are ap-

proved for outdoor use.

• When working with the machine, always hold it rmly with

both hands and provide for a secure stance.

• Always direct the cable to the rear away from the machine.

• Always switch the machine off and wait until it has come

to a standstill before placing it down.

• Insert the mains plug only when the machine is switched

off.

• For mains failure or when the main plug is pulled, unlock

the On/Off switch immediately and turn it to the off posi-

tion. This prevents uncontrolled restarting.

• The machine must be used only for dry cutting/ grinding.

• For all work with the machine, the auxiliary handle 3 must

be mounted.

• Hold the power tool only by the insulated gripping sur-

faces, when performing an operation where the cut-

ting tool may run into hidden wiring or its own cord.

Amoladora GWS 6-115 GWS 7-115

Order number 0 601 282 ... 0 601 800 ...

Power [W] 670 750

Amperage [A]

127 V 5,6 6,2

220 V 3,2 3,6

No-load speed [min

–1

] 11000 11000

Grinding disk ø máx. [mm] 115 (4 1/2”) 115 (4 1/2”)

Grinding spindle threads* M 14M 14

Weight approx. (without accessories) [kg] 1,4 1,7

Protection class

/ II / II

GWS 6-115_GWS 7-115 09.12.03, 15:0713

* For Central America countries spindle thread ∅ 5/8”

Contact with a “live” wire will make exposed metal parts

of the tool “live” and shock the operator.

• Do not drill, cut or saw into blind areas where elec-

tric, gas or water lines may exist. Use suitable detec-

tors to determine if these lines are hidden in the work

area or call the local utility company for assistance.

Contact with electric lines may cause re or electric

shock. Damaging a gas line can result in an explosion.

Penetrating a water pipe will cause property damage or

may cause an electric shock.

• For work with roughing or cutting discs, the protective

guard must be mounted. For work with the rubber sand-

ing plate 13 or disc brush/ap disc, mounting the hand

protector 12 (accessory) is recommended.

• Use a vacuum cleaner for drawing off the dust when

working with stone. The vacuum cleaner must be ap-

proved for masonry dust. When cutting stone, use the

cutting guide.

• Do not work with materials containing asbestos.

• Use only grinding tools with a permissible speed at least

as high as the noload speed of the machine.

• Check grinding tools before use. The grinding tool must

be properly mounted and turn freely. Perform a test run

for at least 30 seconds with-out load. Do not use dam-

aged, out-of-round or vibrating grinding tools.

• Protect the grinding tool from impact, shock and grease.

• Apply the machine to the workpiece only when switched

on.

• Keep hands away from rotating grinding tools.

• Pay attention to the direction of rotation. Al-ways hold the

machine so that sparks and grinding dust y away from

the body.

• When grinding metal, ying sparks are produced. Take

care that no persons are endangered. Due to danger of

re, no combustible materials should be located in the vi-

cinity (spark ight zone).

• Be careful when cutting grooves, e. g. in load-carrying

walls: See information on structures.

• Blocking the cutting disc leads to jerking reac-tion forces

on the machine. In this case switch off the machine im-

mediately.

• Pay attention to the dimensions of the grinding disc. The

mounting hole diameter must t the mounting ange 7

without play. Do not use reducer pieces or adapters.

• Never use cutting discs for rough grinding. Do not exert

any lateral pressure on the cutting discs.

• Observe the manufacturer’s instructions for mounting

and using grinding tools.

• Caution! The grinding tool runs on after the machine is

switched off.

• Do not clamp the machine in a vice.

• Never allow children to use the machine.

• Bosch is only able to ensure perfect operation of the ma-

chine if the original accessories intended for it are used.

Information structures

Slots in load carrying walls are subject to the Standard DIN

1053, Part 1 or country-specic regulations.

These regulations are to be observed under all circumstanc-

es. Before beginning work, consult the responsible structur-

al engineer, architects or the construction supervisor.

Mounting the protective devices

• Before any work on the machine itself, pull the mains

plug.

Protective Guard

• For work with roughing or cutting discs, the protec-

tive guard must be mounted.

Open the clamping lever or the screw.

Place the protective guard with cod-

ed cams into the respectively coded

grooves on the spindle collar of the ma-

chine head and turn anti-clockwise to

the required position (working position).

To fasten the protective guard, close the

clamping lever or the screw.

The closed side of the protective guard

must always point to the operator.

Warning! For the model GWS 6-115 the protective guard

is xed with a screw. In this case a screwdriver should be

used to loosen or to tight the screw.

Note: Coded notches on the protective guard ensure that

only a protective guard that ts the machine type can be

mounted. Disassemble in the reverse sequence.

Auxiliary Handle

• For all work with the machine, the auxiliary handle 3

must be mounted.

Screw the auxiliary handle 3 on the right or left of the ma-

chine head depending on the working method.

Auxiliary handle with vibration absorption 16 (accessory)

The vibration-dampening auxiliary

handle reduces the vibrations, mak-

ing operation more comfortable and

secure.

Do not make any alterations to the auxiliary

handle.

Do not continue to use an auxiliary handle if it is damaged.

Hand Protector (Accessory)

For work with the rubber sanding plate 13 or disc brush/ ap

disc, mounting the hand protector 12 (accessory) is recom-

mended. The hand protector 12 is fastened with the auxil-

iary handle 3.

Mounting the grinding tools (accessories)

• Before any work on the machine itself, pull the mains

plug.

Use only grinding tools with a permissible speed

at least as high as the no-load speed of the ma-

chine.

Roughing and cutting discs become very hot while

working; do not touch until they have cooled.

• Clean the grinder spindle and all parts to be mounted.

For clamping and loosening the grinding tools, lock the

grinder spindle 4 with the spindle locking button 1.

GWS 6-115_GWS 7-115 09.12.03, 15:0714

Actuate the spindle locking button 1 only when the

grinder spindle is at a standstill!

Roughing/Cutting Disk

• Pay attention to the dimensions of the grinding disc. The

mounting hole diameter must t the mounting ange 7

without play. Do not use reducer pieces or adapters.

When using a diamond cutting disk, take care that the direc-

tion of rotation arrow on the diamond cutting disk and the di-

rection of rotation of the machine (direction of rotation arrow

on the machine head) agree.

For mounting, see the illustration page.

Screw on the clamping nut 9 and tighten with the two-pin

spanner (see Section “Quick Clamping Nut”).

After mounting the grinding tool and before

switching on, check that the grinding tool is cor-

rectly mounted and that it can turn freely.

Flap disc

Depending on the application, remove the blade guard 5

and mount the hand guard 12.

Place the special retainer ange 7 and the ap disc on the

grinder spindle 5. Screw on the clamping nut 9 and tighten

with the two-pin spanner.

Rubber Sanding Plate 13

Depending on the application, remove the blade guard 6

and mount the hand guard 12.

For mounting, see the illustration page.

Screw on the round nut 15 and tighten with the two-pin

spanner 11.

Cup Brush 16/Disc brush

Depending on the application, remove the blade guard 5

and mount the hand guard 12.

The grinding tool must be able to be screwed onto the grind-

ing spindle 4 until it rests rmly against the grinder spindle

ange at the end of the grinder spindle threads. Tighten with

an open-ended spanner.

Approved grinding tools

All grinding tools described in these operating instructions

can be used (roughing and cutting discs of synthetic resin-

bonded, bre-reinforced material).

The permissible speed [rpm] or the circumferential speed

[m/s] of the grinding tools used must be at least in accor-

dance with the values given in the table.

Therefore, always observe the permissible rotational/

circumferential speed on the label of the grinding tool.

máx. [mm] [mm]

D b d

[min

–1

] [m/s]

115 6 22,2 11 000 80

115 – – 11 000 80

Quick clamping nut (accessory)

Instead of the clamping nut 9, the quick clamping nut 10

(accessory) can be used. Grinding tools can be mounted

without using tools.

The quick clamping nut 10

may be used only for roughing

and cutting discs.

Use only a awless, undam-

aged quick clamping nut 10.

When screwing on, take care

that the side with printing does

not point to the grinding disc.

The arrow must point to the in-

dex mark 17.

Lock the grinder spindle with the

spindle locking button 1. Tighten

the quick clamping nut by force-

fully turning the grinding disc in

the clockwise direction.

A properly tightened undam-

aged, quick clamping nut can

be loosened by hand turning the

knurled ring in the counter-clock-

wise direction.

Never loosen a tight quick clamping nut with pliers but

use a two-pin spanner. Insert the two-hole spanner as

shown in the illustration.

Initial operation

Observe correct mains voltage: The voltage of the power

source must agree with the voltage specied on the name-

plate of the machine. Equipment marked with 230 V can al-

so be connected to 220 V.

To start the machine, press the On/Off switch 2 forward.

To lock the On/Off switch 2, press it down in the front position.

To switch off the unit, release the On/Off switch 2 or press

the rear tip of it down.

Operating instructions

• Clamp the workpiece if it does not remainstationary

due to its own weight.

• Do not strain the machine so heavily that itcomes to

a standstill.

• Roughing and cutting discs become veryhot while

working; do not touch until theyhave cooled.

Rough Grinding

With an approach angle of 30° to 40°, the best

roughing results can be achieved. Move the ma-

chine back and forth with moderate pressure. In

this manner, the work piece will not become too hot, does

not discolour and no ridges are formed.

Never use a cutting disc for roughing.

Flap disc

With the ap disc (accessory), curved surfaces and proles

(contour sanding) can be worked.

Flap discs have a considerably higher service life than

sanding sheets, lower noise level and lower sanding tem-

peratures.

GWS 6-115_GWS 7-115 09.12.03, 15:0715

Cutting

When cutting, do not press, tilt or oscillate. Work

with moderate advancing that is adapted to the

material being worked.

Do not brake coasting cutting

disks with side pressure.

Important is the direction in

which cutting is performed.

The machine must always work

opposite to the direction of rota-

tion. Therefore, never move the

machine in the other direction!

Otherwise, the danger exists of

it being pushed uncontrolled

out of the cut.

Maintenance and cleaning

• Before any work on the machine itself, pull the mains

plug.

For safe and proper working, always keep the ma-

chine and the ventilation slots clean.

In extreme working conditions, conductive dust can

accumulate in the interior of the machine when work-

ing with metal. The protective insulation of the ma-

chine can be degraded. The use of a stationary ex-

traction system is recommended in such cases as

well as frequently blowing out the ventilation slots

and installing a residual current device (RCD).

If the machine should fail despite the care taken in manu-

facturing and testing procedures, repair should be carried

out by an after-sales service centre for Bosch power tools.

Guarantee

We guarantee Bosch applicances in accordance with

tatutory/country specic regulations (proof of purchase by

invoice or delivery note).

Damage attributable to normal wear and tear, overload or

improper handling wil be ecluded from the guarantee.

In case of complaint please send the machine, undisman-

tled, to your dealer or the Bosch Service Center for eletric

power tools.

Warning!

Freight and insurance costs ar charged to client, even for

warranty claims.

Environmental protection

Recycle raw materials instead of disposing

as waste.

The machine, accessories and packaging should

be sorted for environmental-friendly recycling.

The plastic components are labelled for categorized recycling.

GWS 6-115_GWS 7-115 09.12.03, 15:0716

Subject to change without notice

GWS 6-115_GWS 7-115 09.12.03, 15:0717

General power tool safety instructions

WARNING! Read all safety warnings and all instruc-

tions. Failure to follow the warnings and instructions may

result in electric shock, fire and/or serious injury.

Save all warnings and instructions for future reference.

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

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

SAVE THESE INSTRUCTIONS

1. Work area safety

a) Keep work area clean and well lit. Cluttered and poorly lit

areas can result in accidents.

b) Do not operate power tools in the presence of flammable

liquids, gases or dust. Power tools create sparks which may

ignite the dust or fumes.

c) Keep children and bystanders away while operating a

power tool. Distractions can cause you to lose control.

2. Electrical safety

a) 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. Unmodified plugs and

matching outlets will reduce risk of electric shock.

b) Avoid body contact with earthed or grounded surfac-

es such as pipes, radiators and refrigerators. There is an

increased risk of electric shock if your body is earthed or

grounded.

c) Do not expose power tools to rain or wet conditions. Water

entering a power tool will increase the risk of electric shock.

d) Do not misuse 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 entan-

gled cords increase the risk of electric shock.

e) When operating a power tool outdoors, use an extension

cord suitable for outdoor use. Use of a cord suitable for out-

door use reduces the risk of electric shock.

f) If it is not possible to avoid the use of the power tool in

humid or wet areas, use a residual current device (RCD)

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

shock.

g) In case of change need or substitution of the electric ca-

ble, it should be made by an authorized and qualified tech-

nical service. A damaged cable increases the risk of electric

shock.

3. Personal safety

a) Stay alert, watch what you are doing and use common sense

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

if you are tired or under the influence of drugs, alcohol or

medication. A moment of inattention while operating power

tools may result in serious personal injury.

b) Use safety equipment. Always wear eye protection. Safety

equipment such as dust mask, non-skid safety shoes, hard

hat, or hearing protection used for appropriate conditions will

reduce personal injuries.

c) Avoid accidental starting. Ensure the switch is in the off-

position before plugging in. Carrying power tools with your

finger on the switch or plugging in power tools that are switch-

es on invite accidents.

d) Remove any adjusting key or wrench before switching on

the power tool. A wrench or a key left attached to a rotating

part of the power tool may result in personal injury.

e) Do not overreach. Keep proper footing and balance at all

times. This enables better control of the power tool in unex-

pected situations.

f) Dress properly. Do not wear loose clothing or jewellery.

Keep your hair, clothing and gloves away from moving

parts. Loose clothes, jewellery or long hair can be caught in

moving parts.

g) If devices are provided for the connection of dust extrac-

tion and collection facilities, ensure these are connected

and properly used. Use of these devices can reduce dust re-

lated hazards.

h) Use ear protectors. Exposure to noise can cause hearing

loss.

i) Use auxiliary handles supplied with the tool. Loss of con-

trol can cause personal injury.

4. Power tool use and care

a) 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.

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

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

switch is dangerous and must be repaired.

c) Disconnect the plug from the power source and/or the

battery pack from the power tool before making any ad-

justments, changing accessories, or storing power tools.

Such preventive safety measures reduce the risk of starting

the power tool accidentally.

d) Store idle power tools out of the reach of children and do

not allow persons unfamiliar with the power tool or these

instructions to operate the power tool. Power tools can

cause injuries in the hands of untrained users.

e) Maintain power tools. Check for misalignment or binding

of moving parts, breakage of parts and any other condition

that may affect the power tools operation. If damaged, have

the power tool repaired before use. Accidents are caused by

poorly maintained power tools.

f) Keep cutting tools sharp and clean. Properly maintained cut-

ting tools with sharp cutting edges are less likely to bind and

are easier to control.

g) Use the power tool, accessories and tool bits etc. in accor-

dance with these instructions and in the manner intended

for the particular type of power tool, taking into account

the working conditions and the work to be performed. Use

of the power tool for operations different from those intended

could result in injuries.

5. Service

a) Have your power tool serviced by a qualified repair per-

son using only identical replacement parts. This will ensure

that the safety of the power tool is maintained.

b) The substitution of the brushes of the power tool should

be accomplished by an authorized and qualified technical

service. Brushes out of specification can cause damages to

the motor of the power tool.

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Bosch 7-115 Operating instructions

Brand: Bosch

Model: 7-115

Category: Straight grinders

Type: Operating instructions

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