Bosch GWS10-45, GWS10-45P, GWS10-45PD, GWS13-50, GWS13-50P Owner's Manual

...

IMPORTANT: IMPORTANT : IMPORTANTE:

Read Before Using Lire avant usage Leer antes de usar

Operating/Safety Instructions Consignes d’utilisation/de sécurité

Instrucciones de funcionamiento y seguridad

For English Version Version française Versión en español See page 2 Voir page 26 Ver la página 50

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WS10-45 GWS10-45P GWS10-45PD GWS13-50 GWS13-50P GWS13-50PD GWS13-50VS GWS13-50VSP GWS13-60 GWS13-60PD

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Work area safety

Keep work area clean and well lit. Cluttered

or dark areas invite accidents.

Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Power

tools create sparks which may ignite the dust or fumes.

Keep children and bystanders away while operating a power tool. Distractions can

cause you to lose control.

Electrical safety

Power tool plugs must match the outlet. Never modify the plug in any way. Do not us e any adapt er plugs wi th earthed (grounded) power tools. Unmodified plugs

and matching outlets will reduce risk of electric shock.

Avoid body contact with earthed or grounded surfaces such as pipes, radiators, ranges and refrigerators. There is an increased risk

of electric shock if your body is earthed or grounded.

Do not expose power tools to rain or wet conditions. Water entering a power tool will

increase the risk of electric shock.

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.

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.

If operating a power tool in a damp location is unavoidable, use a Ground Fault Circuit Interrupter (GFCI) protected supply. Use of

an GFCI reduces the risk of electric shock.

Personal safety

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 influence of drugs, alcohol or medication. A moment of inattention

while operating power tools may result in serious personal injury.

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.

Prevent unintentional starting. Ensure the switch is in 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 energizing power tools that have the switch on invites accidents.

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.

Do not overreach. Keep proper footing and balance at all times. This enables better

co n trol of the powe r too l in unex p ected situations.

Dress properly. Do not wear loose clothing or jewelry. Keep your hair, clothing and gloves away from moving parts. Loose

clothes, jewelry or long hair can be caught in moving parts.

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

Do not force the power tool. Us e 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.

Do not use the power tool if the switch does not turn it on and off. Any power tool that

ca n n o t be control l e d with the switc h is dangerous and must be repaired.

Disconnect the plug from the power source

Read all safety warnings and all instructions. 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 all of the warnings refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.

WARNING

General Power Tool Safety Warnings

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and/or the battery pack from the power tool b

efore making any adjustments, changing

accessories, or storing power tools. Such

preventive safety measures reduce the risk of starting the power tool accidentally.

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 are

dangerous in the hands of untrained users.

Maintain power tools. Check for misalignment or binding of moving parts, breakage of parts and any other condition that may affect the power tool’s operation. If damaged, have the power tool repaired before use.

Ma n y a c c i dents are caused by poo r l y maintained power tools.

Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely to bind and are easier to control.

Use the power tool, accessories and tool bits etc. in accordance with these instructions, 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 a hazardous situation.

Battery tool use and care

Recharge only with the charger specified by the manufacturer. A cha rger that i s

suitable for one type of battery pack may create a risk of fire when used with another battery pack.

Use power tools only with specifically designated battery packs. Use of any other

battery packs may create a risk of injury and fire.

When battery pack is not in use, keep it away from other metal objects like paper clips, coins, keys, nails, screws, or other small m e t a l objects that c a n make a connection from one terminal to another.

Shorting the battery terminals together may cause burns or a fire.

Under abusive conditions, liquid may be ejected from the battery, avoid contact. If contact accidentally occurs, flush with water. If liquid contacts eyes, additionally seek medical help. Liquid ejected from the

battery may cause irritation or burns.

Service

Have your power tool serviced by a qualified re pair person using o nly identical replacement parts. This will ensure that the

safety of the power tool is maintained.

Safety Warnings Common for

Grinding, Sanding, Wire Brushing,

and Abrasive Cutting-Off

Operations:

his power tool is intended to function as a grinder, sander, wire brush or cut-off tool. Read all safety warnings, instructions, illustrations and specifications provided with this power tool. Failure to follow all

instructions listed below may result in electric shock, fire and/or serious injury.

Operations such as polishing is not recommended to be performed with this power tool. Operations for which the power

tool was not designed may create a hazard and cause personal injury.

Do not use accessories which are not specifically designed and recommended by the tool manufacturer. Just because the

accessory can be attached to your power tool, it does not assure safe operation.

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 fly apart.

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.

Threaded mounting of accessories must match the GRINDER spindle thread. For accessories mounted by FLANGES, the arbour hole of the accessory must fit the locating diameter of the FLANGE.

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.

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 accessory 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 accessories will normally break apart during this test time.

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Wear personal protective equipment. D

epending on application, use face shield, safety goggles or safety glasses. As appropriate, wear dust mask, hearing protectors, gloves and workshop apron capable of stopping small abrasive or workpiece fragments. The eye protection

must be capable of stopping flying debris generated by various operations. The dust mask or respirator must be capable of filtrating pa rtic les gen erate d b y yo ur opera tion . Prolonged exposure to high intensity noise may cause hearing loss.

Keep bystanders a safe distance away from work area. Anyone entering the work area must wear personal protective equipment.

Fr agme nts of wor kpie ce or of a bro ken accessory may fly away and cause injury beyond immediate area of operation.

Hold the power tool by insulated gripping surfaces only, when performing an operation where the cutting accessory may contact hidden 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.

Position the cord clear of the spinning accessory. If you lose control, the cord may be

cut or snagged and your hand or arm may be pulled into the spinning accessory.

Never lay the power tool down until the accessory has come to a complete stop.

The spinning accessory may grab the surface and pull the power tool out of your control.

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.

Regularly clean the power tool’s air vents.

The motor’s fan will draw the dust inside the ho usin g and exce ssiv e acc umul atio n of powdered metal may cause electrical hazards.

Do not operate the power tool near flammable materials. Sparks could ignite

these materials.

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 accessory. Pinching or snagging causes rapid stalling of the rotating accessory which in turn causes the uncontrolled power

tool to be forced in the direction opposite of the a

ccessory’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 kickout. The wheel may either jump toward or away from the operator, de pend ing on d i rect ion of t he w heel’ s movement at the point of pinching. Abrasive wheels may also break under these conditions.

Kickback is the result of power tool misuse and/ or in cor rect ope rating p rocedures or conditions and can be avoided by taking proper precautions as given below.

Maintain a firm 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

re acti ons or ki ckba ck forc es, if pr oper precautions are taken.

Never place your hand near the rotating accessory. Accessory may kickback over your

hand.

Do not position your body in the area where power tool will move if kickback occurs.

Kickb ack wi ll propel the t ool in direc tion opposite to the wheel’s movement at the point of snagging.

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.

Do not attach a saw chain woodcarving blade or toothed saw blade. Such blades

create frequent kickback and loss of control.

Safety Warnings Specific for

Grinding and Abrasive

Cutting-Off Operations:

Use only wheel types that are recommended for your power tool and the specific guard designed for the selected wheel. Wh eels fo r which the

po wer too l was not des igne d can not be adequately guarded and are unsafe.

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.

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The guard must be securely attached to the p

ower tool and positioned for maximum safety, so the least amount of wheel is exposed towards the operator. The guard

helps to protect operator from broken wheel fragments and accidental contact with wheel.

Wheels must be used only for recommended applications. For example: do not grind with the side of cut-off wheel.

Abras ive cut-o ff wheels are int ende d for peripheral grinding, side forces applied to these wheels may cause them to shatter.

Always use undamaged wheel flanges that are of correct size and shape for your selected wheel. Proper wheel flanges support

the wheel thus reducing the possibility of wheel breakage. Flanges for cut-off wheels may be different from grinding wheel flanges.

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 Specific

for Abrasive Cutting-Off Operations:

Do not “jam” the cut-off 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 or wheel breakage.

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 spinning wheel and the power tool directly at you.

When wheel is binding or when interrupting a cut for any reason, switch off the power tool and hold the power tool motionless until the wheel comes to a complete stop. Never attempt to remove the cut-off wheel from the cut while the wheel is in motion otherwise kickback may occur. Investigate

and take corrective action to eliminate the cause of wheel binding.

Do not restart the cutting operation in the workpiece. Let the wheel reach full speed and carefully reenter the cut. The wheel may

bind, walk up or kickback if the power tool is restarted in the workpiece.

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 n

ear the edge of the workpiece on both sides of

the wheel.

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.

Do not use type 1 abrasive wheels designed for straight grinding.

Do not attempt to cut large stock or sheets of metal as this machine is not designed to be a dedicated cut-off machine.

Safety Warnings Specific for

Sanding Operations:

Do not use excessively oversized sanding disc paper. Follow manufacturer’s recommendations, 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 Specific for Wire

Brushing Operations:

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. Th e wi re

bristles can easily penetrate light clothing and/or skin.

If the use of a guard is recommended for wire brushing, do no t allow any 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.

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Additional Safety Warnings

Do not use AC only rated tools with a DC power supply. While the tool may appear to

work, the electrical components of the AC rated tool are likely to fail and create a hazard to the operator.

Keep handles dry, clean and free from oil and grease. Slippery hands cannot safely

control the power tool.

Use clamps or other practical way to secure and support the workpiece to a stable platform. Holding the work by hand or against

your body is unstable and may lead to loss of control.

Develop a periodic maintenance schedule for your tool. When cleaning a tool be careful not to disassemble any portion of the tool since internal wires may be misplaced or pinched or safety guard return springs may be improperly mounted.

Certain cleaning agents such as gasoline, carbon tetrachloride, am mon ia, etc. may damage plastic parts.

Do not use vacuum or other dust collection system when cutting metal. Sparks from

metal cutting can cause fire in the collector.

Some dust created by power

sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are:

• Lead from lead-based paints,

• Crystalline silica from bricks and cement and

other masonry products, and

• Arsenic an d chromium from chemically-

treated lumber.

Yo u r risk f r o m these expo s u r es var i e s , depending on how often you do this type of work. To reduce your expos ure to th ese chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter out microscopic particles.

WARNING

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Symbols

IMPORTANT: Some of the following symbols may be used on your tool. Please study them

and learn their meaning. Proper interpretation of these symbols will allow you to operate the tool better and safer.

Symbol Designation / Explanation

V Volts (voltage)

A Amperes (current)

Hz Hertz (frequency, cycles per second)

W Watt (power)

kg Kilograms (weight)

min Minutes (time)

s Seconds (time)

Diameter (size of drill bits, grinding wheels, etc.)

No load speed (rotational speed at no load)

n Rated speed (maximum attainable speed)

.../min

Revolutions or reciprocation per minute (revolutions, strokes, surface speed, orbits etc. per minute)

0 Off position (zero speed, zero torque...)

1, 2, 3, ...

I, II, III,

Selector settings (speed, torque or position settings. Higher number means greater speed)

Infinitely variable selector with off (speed is increasing from 0 setting)

Arrow (action in the direction of arrow)

Alternating current (type or a characteristic of current)

Direct current (type or a characteristic of current)

Alternating or direct current (type or a characteristic of current)

Class II construction (designates double insulated construction tools)

Earthing terminal (grounding terminal)

Warning symbol (alerts user to warning messages)

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Symbols (continued)

IMPORTANT: Some of the following symbols may be used on your tool. Please study them

and learn their meaning. Proper interpretation of these symbols will allow you to operate the tool better and safer.

Symbol Designation / Explanation

Designates Li-ion battery recycling program

Designates Ni-Cad battery recycling program

Alerts user to read manual

Alerts user to wear eye protection

This symbol designates that this tool is listed by Underwriters Laboratories.

This symbol designates that this component is recognized by Underwriters Laboratories.

This symbol designates that this tool is listed by Underwriters Laboratories, to United States and Canadian Standards.

This symbol designates that this tool is listed by the Canadian Standards Association.

This symbol designates that this tool is listed by the Canadian Standards Association, to United States and Canadian Standards.

This symbol designates that this tool is listed by the Intertek Testing Services, to United States and Canadian Standards.

This symbol designates that this tool complies to NOM Mexican Standards.

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GUARD

RELEASE / ADJUSTMENT

BUTTON

SPINDLE LOCK

GRINDING

WHEEL

PADDLE SWITCH

"LOCK-OFF" SWITCH

RELEASE LEVER

VIBRATION

CONTROL

SIDE HANDLE

TYPE 41/1A

CUTTING GUARD

(Optional Accessory)

TYPE 27

GRINDING

GUARD

VENTILATION

OPENINGS

HAND SHIELD

(Optional Accessory)

FIG. 1

Angle Grinders with Paddle Switch

LOCK-ON

SWITCH

(select models)

Model Number

GWS10-45P &

GWS10-45PD

GWS13-50P &

GWS13-50PD

GWS13-50VSP GWS13-60PD

Amps 10 13 13 13 Volts AC 120 120 120 120 Rated Speed (RPM), /min 11500 11500 2800 - 11500 9300 Spindle Thread 5/8"-11 5/8"-11 5/8"-11 5/8"-11 Max. grinding wheel ⌀ 4-1/2" (115mm) 5" (125mm) 5" (125mm) 6" (150mm) Grinding wheel thickness

1/4" (6 mm) 1/4" (6 mm) 1/4" (6 mm) 1/4" (6 mm) Max. cutting wheel ⌀ 4-1/2" (115mm) 5" (125mm) 5" (125mm) 6" (150mm) Max. sanding disc ⌀ 4-1/2" (115mm) 5" (125mm) 5" (125mm) 6" (150mm) Max. flap disc ⌀ 4-1/2" (115mm) 5" (125mm) 5" (125mm) 6" (150mm) Max. wire wheel ⌀ 4" (102mm) 4" (102mm) 4" (102mm) 4" (102mm) Max. wire cup wheel ⌀ 3" (76mm) 3" (76mm) 3" (76mm) 3" (76mm) Variable speed - - ● Electronic clutch - ● ● ● Constant response circuitry - ● ● ● Restart protection - ● ● ● Overload protection - ● ● ● Soft start - ● ● ●

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GUARD

RELEASE / ADJUSTMENT

BUTTON

SPINDLE

LOCK

GRINDING

WHEEL

VIBRATION

CONTROL

SIDE HANDLE

TYPE 41/1A

CUTTING GUARD

(Optional Accessory)

TYPE 27

GRINDING GUARD

VENTILATION

OPENINGS

HAND SHIELD

(Optional Accessory)

FIG. 2

Angle Grinders with Slide Switch

SLIDE SWITCH

Model Number GWS10-45 GWS13-50 GWS13-50VS GWS13-60

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Accessory speed rating must be equal to or greater than the tool’s speed rating. Do not exceed the recommended wheel diameter.

Do not use Type 11 abrasive (cup) wheels with this tool. This tool is not designed for use with type 11 (cup) abrasive grinding wheels.

WARNING

X = Tool is provided with attachments to perform this application. O = Tool can use optional attachments to perform this application. N = Tool is not capable of this application.

Application

Model Number

GWS10-45

GWS13-50

GWS13-50VS

GWS13-60

GWS10-45P

GWS10-45PD

GWS13-50P

GWS13-50PD

GWS13-50VSP

GWS13-60PD

Metal Grinding (Type 27) X X X X X X X X Metal Grinding (Type 11) N

N N N N N N N Metal Grinding (Type 1) N N N N N N N N Metal Cutting (Type 41/1A) O

O O O O O O O Concrete Surfacing O O O O O O O O Concrete/Masonry Cutting O

O O O O O O O Sanding O O O O O O O O Wire Brushing (Wheel) X

X X X X X X X Wire Brushing (Cup) O O O O O O O O

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Lock Nut & Backing Flange

Your tool is equipped with a threaded spindle for mounting non-threaded hub accessories. Always use the supplied backing flange with a lock nut. Inner flange is keyed to output sh aft (Fig. 3 ). A lways ens ure tha t ar bor diam e t e r matches a c c e s s o r y diameter. Accessories that run eccentrically may burst.

Installing Side Handle

Th e sid e han d l e is us e d to c o n t r o l and balance the tool. Securely thread handle into either side of gear housing, depending on pe rson a l pr efer ence, com fort , ope rati on being performed. The handle should always be installed onto the guard protected side of the tool (Fig. 4). Use the side handle for safe control and ease of operation.

Hand Shield

The hand shield is to be used with backing pads, sand ing discs and wire brus hes to ke e p finge r s and h a n d away fro m work su rfac e, s harp edg es, b urrs and deb ris. Wh en us ing t he h a nd sh ield acc essor y, insert side handle through hole in shield and then thread into housing (Fig. 4). Ensure that hand shield is positioned between hand and backing pad, sanding disc or wire brush.

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Functional Descriptions

Electronic Clutch:

The electronics in the powe r tool detects situations where the wheel or accessory may be at risk to bind. The electronics prevents further rotation of the drive spindle by switching th e power too l of f (it does no t prevent kickback). To resume operation, turn on/off switch to the off position, then restart tool.

Constant Response Circuitry:

Helps maintain near constant RPMs between no-load and load conditions.

Soft Start:

Helps reduce stress on the motor that occurs from a high torque start. Helps bring accessory smoothly up to speed.

Automatic Restart Protection:

Helps prevent accidental startups after power ha s bee n inte r rupte d , e.g. the too l was unplugged with the switch locked in the on

position. To resume operation, turn on/off switch to the off position, then restart the tool. See the chart under Fig. 1 and Fig. 2 to find out which grinders are equipped with the Automatic Restart Protection.

Overload Protection:

Helps protect tool from excessive heat that may damage motor. If tool stops or slows during operation, allow motor to cool for 30 seconds by running no-load. If the overload protection stops the tool repeatedly, excessive force is causing the tool to overload. Stop excessive force and readjust work piece to reduce force applied.

Variable Speed:

Allows the grinders RPM to be adjusted for greater versatility to match needs of specific applications.

Assembly Instructions

FIG. 4

BACKING

FLANGE

LOCK NUT

FIG. 3

SPINDLE

(GUARD NOT SHOWN FOR CLARITY)

KEYED

TO SHAFT

HAND SHIELD

(Optional Accessory)

SIDE

HANDLE

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Installing Wheel Guards

(

Type 27 and Type 41/1A Wheel Guards)

A Type 27 guard must be used with all grinding

heels, bonded body sanding flap discs,

wire brushes and wheels. The tool may be

used without a guard only when sanding with conventional sanding discs.

To attach guard (Fig. 5):

1. Unplug tool from power source.

2. Position appropriate guard on spindle neck so arrows on guard and spindle neck align.

3. Rotate wheel guard clockwise 90º until guard clicks in place.

4. Adjust guard by depressing guard release bu t ton and r otate to desir e d po s ition . Al ways po siti o n w heel gu ard betw een operator and work piece and direct sparks away from operator, Fig. 6.

5. Allow guard release button to click in place.

To remove wheel guard:

1. Depress guard release button and rotate guard until arrows on guard and spindle neck align.

2. Remove guard from spindle neck.

WHEEL GUARD

SPINDLE

NECK

FIG. 5

PER

ATIN

WARNING

FIG. 6

GUARD

RELEASE

BUTTON

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Abrasive Type 27 Grinding Wheel &

Sanding Flap Disk Assembly

Your tool is equipped with a threaded spindle for mounting non-threaded hub accessories. Always use the supplied backing flange with a lock nut. Always ensure that arbor diameter matches accessory diameter.

To install grinding wheel or flap disk (Fig. 7):

1. Unplug tool from power source.

2. Install and adjust type 27 grinding guard to the proper position for grinding as shown in figure 5.

3. Place the backing flange on the spindle. Turn flange until it locks with the base of the spindle.

4. Place the grinding wheel onto the spindle and align the arbor hole of the grinding wheel with the shoulder of the backing flange.

5. Thread the lock nut onto the spindle with the lock nut relief facing the accessory.

6. Ti ghten lock nut with suppli ed lock nut wrench while holding spindle lock.

TO REMOVE: Reverse procedure.

When using spin-on wheels:

Follow steps 1 & 2, then thread wheel directly onto spindle withou t usin g the supplied flanges.

TO REMOVE: Reverse procedure.

All parts of a spin-on wheel must be within lip of grinding guard (Fig. 8). If spin-on wheel is past lip of guard, do not use that wheel as it does not fit on this grinder.

Do not use accessories that run eccentrically. The

tool will vibrate excessively and may cause loss of control and the accessory may burst.

WARNING

LOCK NUT

TYPE 27

GRINDING

WHEEL

BACKING

FLANGE

SPINDLE

-14-

SPINDLE

TYPE 27

WHEEL GUARD

FIG. 7

BACKING

FLANGE

TYPE 27 SPIN-ON

GRINDING WHEEL

TYPE 27

GRINDING

WHEEL

LOCK NUT

FIG. 8

SPIN-ON

WHEEL

LIP OF

GUARD

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Abrasive Type 41/1A and 27 Cutting

Wheel Assembly

Always use Type 41/1A cutting guard for cutting

perations. Other guards or attachments may

not protect operator in the event of a wheel burst.

A type 27 wheel guard may

not be use d for all tool operations. Do not discard guard when not in use. Always reinstall wheel guard when

converting back to grinding operations.

To install cutting wheel (Fig. 9):

1.Unplug tool from power source.

2.Install and adjust Type 41/1A cutting guard

to the proper position for cutting as shown in figure 5.

3.Place the backing flange on the spindle.

Turn flange until it locks with the base of the spindle.

4.Place the cutting wheel onto the spindle

and alig n t he arbor h ole of the cutti ng wheel with the shoulder of t he backing flange.

5.Thread the lock nut onto the spindle with

the lock nut relief facing the accessory.

6.Ti ghten lock nut with supp lied lock nut

wrench while holding spindle lock.

TO REMOVE: Reverse procedure.

-15-

TYPE 41/1A

WHEEL GUARD

SPINDLE

BACKING

FLANGE

TYPE 41/1A

CUTTING

WHEEL

FIG. 9

LOCK NUT

TYPE 27A

CUTTING

WHEEL

LOCK NUT

TYPE 27A

CUTTING

WHEEL

BACKING

FLANGE

SPINDLE

WARNING

2610041357 09-15 GWS10 GWS13.qxp_GWS series 9/18/15 12:56 PM Page 15

-16-

Concrete Dust Extraction

Attachment for Surfacing Grinding

Assembly

A type 27 grinding wheel

guard may not be used for all tool operations. Do not discard guard when not in use. Always reinstall whee l

gu ard when c onver ting bac k to gri ndin g operations.

Dust Extrac t i o n

Attachment is not a guard, do not use with bonded abrasive wheels.

Dust extraction attachment may not protect operator in the event of a wheel burst.

To instal l concre te dust extrac tion attachment (Fig. 10):

1.Unplug tool from power source.

2.Position appropriate attachment on spindle

neck with dust port pointing away from tool body.

3.Rot a te a ttach ment clockwi se 9 0 º un til

guard clicks in place.

4.Adjust attachment by depressing guard

release button and rota t e to desired position.

5.Allo w guar d rel e a se b u t ton t o cli c k in place.

6.Place the backing flange on the spindle.

7.Pl ace the diamond cup wheel onto the

spindle and align with the flange.

8.Thread the lock nut onto the spindle with

the lock nut relief facing the accessory.

9.Ti ghten lock nut with supp lied lock nut

wrench while holding spindle lock.

When using spin on wheels, follow steps 1 5, then thread wheel directly onto spindle without using the supplied flanges.

TO REMOVE: Reverse procedure.

SPINDLE

CONCRETE DUST EXTRACTION

ATTACHMENT

WHEEL GUARD

SPINDLE

NECK

FIG. 10

WARNING

2610041357 09-15 GWS10 GWS13.qxp_GWS series 9/18/15 12:56 PM Page 16

Wire Cup Brush Assembly

A type 27 wheel guard may

not b e us e d for all tool operations. Do not discard guard when not in use. Always reinstall wheel guard

when converting back to grinding operations.

The hand shield is to be used with backing pads, sanding discs and wire brushes to keep fingers and hand away from work surface, sharp edges, burs and debris. When using the hand shield accessory, insert side handle through hole in shield and then thread into housing (Fig 4). Ensure that hand shield is positioned between hand and backing pad, sanding disc or wire brush.

Do not use a knotted wire cup brush with this tool. This tool does not have a guard for

knotted wire cup brushes.

To install wire cup brush (Fig. 12):

1. Unplug tool from power source.

2. Attach hand shield.

3. Thread wire cup brush onto spindle until secure. Be sure to seat cup brush against shoulder before turning tool “ON”.

TO REMOVE: Reverse procedure.

Sanding Assembly

A type 27 wheel guard may

not be use d for all tool operations. Do not discard guard when not in use. Always reinstall wheel guard when

converting back to grinding operations.

To install backing pad and sanding disc (Fig. 11):

1. Unplug tool from power source.

2. Attach hand shield.

3. Place the rubber back ing pad onto the

spindle shaft.

4. Cen t er the sandi ng d isc on top of t he

backing pad.

5. Insert the lock nut through the disc and

thread onto spindle.

6. Tighten l ock nut with supplied lock nut wrench while holding spindle lock.

TO REMOVE: Reverse procedure.

SANDING

DISC

BACKING

PAD

LOCK NUT

SPINDLE

FIG. 11

SPINDLE

FIG. 12

WIRE CUP

BRUSH

-17-

WARNING

HAND

SHIELD

HAND

SHIELD

2610041357 09-15 GWS10 GWS13.qxp_GWS series 9/18/15 12:56 PM Page 17

Masonry Cutting Guard

Assembly

A type 27 grinding wheel

guard may not be used for all tool operations. Do not discard guard when not in use. Always reinstall whee l

ua rd w hen convert ing back t o gr indin g

operations.

To improve ergonomics of your grinder when cutting masonry, gearbox must be rotated relative to the position of the switch as the tool was assembled at the factory.

Rotate gearbox (Fig. 13):

1. Unplug tool from power source.

2. Comple t e l y unscrew the fou r screws

between the gear housing and motor body.

3. Rotate g e a r housing t o t h e proper

orientation without removing motor from the housing.

a. For the slide switch models, rotate gear

housing 180 degrees in the direction indicated in Fig 14a, so the switch is 90 degrees from the spindle.

b. For the paddle switch models, rotate

gear housing 90 degrees in the direction indicated in Fig 14b, so the switch is facing the work piece.

4. Screw in and tighten the four screws you

removed.

5. The screw holding the quick release lever

is longer than the other screws, this long screw must stay with the quick release lever when re-attaching gear housing for the qu i ck re l e a se bu t t o n t o o p e r a t e properly.

6. Attach proper dust collection guard with

foot and accessory.

Installing Masonry Type 1 Cutting Guard:

1. Use tool adjusted as show in figures 13

and 14a or 14b.

2. Unplug tool from power source.

3. Unscrew and remove side handle.

4. Sl ide dust extraction gu ard on sp ind le

neck.

5. Rotate attachment until stability bracket

and hole for side handled are aligned.

-18-

FIG. 13

SLIDE

SWITCH

PADDLE SWITCH

UNDER

TOOL

FIG. 14b

WARNING

180

DEGREES

180

DEGREES

FIG. 14a

SPRING

GUARD

RELEASE

LEVER

(x3)

2610041357 09-15 GWS10 GWS13.qxp_GWS series 9/18/15 12:56 PM Page 18

-19-

6. Screw in side handle to secure stability

brack et b etween the tool housin g and handle.

7. Adjust guard to desired depth of cut.

TO REMOVE: Reverse procedure.

Installing dry diamond wheel (Fig. 15):

1. Place the backing flange on the spindle.

Turn flange until it locks with the base of the spindle.

2. Pl ace th e d ry diamo nd wheel onto the

spindle and align the arbor hole of the grinding wheel with the shoulder of the backing flange.

3. Tighten lock nut with supplied lock nut

wrench while holding spindle lock.

TO REMOVE: Reverse procedure.

FIG. 15

SPINDLE

LOCK

NUT

BACKING

FLANGE

DRY

DIAMOND

WHEEL

LOCK NUT

BACKING

FLANGE

SPINDLE

DRY

DIAMOND

WHEEL

Wire Wheel Assembly

To install wire wheel (Fig. 16):

1. Unplug tool from power source.

2. Install and adjust type 27 grinding guard to

the proper position as shown in figure 5.

3. Thread wire w h e e l onto s p i n d l e until

secure.

NOTE: Be sure to seat wire wheel against shoulder before turning tool “ON”.

TO REMOVE: Reverse procedure.

SPINDLE

TYPE 27

WHEEL GUARD

WIRE WHEEL

FIG. 16

2610041357 09-15 GWS10 GWS13.qxp_GWS series 9/18/15 12:56 PM Page 19

If the “Lock-ON” button is

continuously b e i ng depressed, the trigger cannot be released.

ever leave the trigger

locked "ON" . Before plugging the tool in, check that the trigger lock is "OFF". Accidental start-ups could

cause injury.

Be aware of the location

and setting of the switch "Lock-ON" button. If the switch is locked

"ON" during the use, be ready for emergency situations to switch it "OFF".

Do not use t h e switch

"Lock-ON" feature in situations where kickback is likely, such as when working into a corner. When the

wheel binds, the to o l wi l l ki c k - b ack in opposite direction of wheel rotation and the rele ase of the trigger "L ock -ON" may be difficult.

Paddle Switch (Fig. 17)

The paddle switch has a lock-off feature to help prevent accidental startups. TO TURN TOOL “ON”, push lock-off switch backward to un lock the pad dle switch, the n sq ueez e pa d d l e swi t c h . TO TU R N TOOL “OFF”, re leas e pr essu re on pa ddle switch . Th e switch is spring loaded and will return to the “OFF” position automatically.

If your to o l ha s the LOCK - O N fe a t u r e in c o r p o r a t e d into t h e paddle s w i t c h for extended operation, there will be a red button on the bottom of the tool directly behind the paddle switch. TO LOCK SWITCH “ON” after pa ddle swi tch has be en activa ted, pus h “LOCK-ON” but ton while simult aneo usly releasing pressure from the paddle switch. TO TURN TOOL “OFF”, sq u e e z e a n d release paddle switch.

Slide Switch (Fig. 18)

TO TURN TOOL ON, press the back of the switch and slide forward towards the gear housing an d in t o the ON po s i t i o n . TO “LOCK-ON”, when the switch is slid into the “ON” position, roll the switch forward. TO TURN TOOL “OFF”, press the rear portion of the switch. The switch is spring loaded and will return to th e “ O F F ” p o s i t i o n automatically.

WARNING

Operating Instructions

FIG

FIG.

-20-

WARNING

LOCK-ON

SWITCH

2610041357 09-15 GWS10 GWS13.qxp_GWS series 9/18/15 12:56 PM Page 20

Metal Cutting

A Type 1 wheel guard may

not be included with this tool but is required when using a cutting wheel. Cutting with a type 27 wheel guard

ma y not provi d e the opera t or suff i cient protection in the event of a wheel burst.

With this grinder it i s possible to perfo rm cutting of limited small stock such as metal tubes, piping or rebar. When cutting, work with moderate feed, adapted to the material being cut. When cutting profiles and square bar, it is best to start at the smallest cross section.

Always follow precautions for kickback.

1. Allow the tool to reach full speed before

touching the tool to the work surface.

2. The tool should always be used in such way

that the sparks are directed away from user.

3. App l y minim u m press u re to the wo r k

surface, allowing the tool to operate at high speed. Cutting rate is greatest when the tool operates at high speed.

4. Do not exert side pressure onto the cutting

disc. Do not tilt or oscillate the tool as wheel may burst, (Fig. 20).

5. Remove the tool from the work surface

before turning the tool off. Allow the tool to stop rotating before laying it down.

-21-

WARNING

FIG.

Metal Grinding

Grinding wheels should be carefully selected in order to use the grinder most efficiently. Wh e e l s vary i n type o f abr a s i v e , bond, hardness, grit size and structure. The correct wheel to use is determined by the job. Use disc grindi ng w heel s for f ast grinding of structural steel, heav y weld beads, steel casting, sta inless steel and other ferrous metals.

1. Allow the tool to reach full speed before

touching the tool to the work surface.

2. Apply mi n i m u m pressure t o the w o r k

surface, allowing the tool to operate at high speed. Grinding rate is greatest when the tool operates at high speed.

3. Maintain a 10° to 15° angle between the

tool and work surface, (Fig. 19).

4. Continuously move the tool at a moderate speed to avoid creating gouges in the work surface.

5. Remove the tool from work surface before tu rnin g to o l of f. A llow the to ol to st o p rotating before laying it down.

Tip: When grinding with a new wheel be certain to grind while pulling tool backwards un til the whe el b ecome s ro unde d on its edge. New wheels have sharp edges which tend to “bite” or cut into the work piece when pushed forward.

FIG

2610041357 09-15 GWS10 GWS13.qxp_GWS series 9/18/15 12:56 PM Page 21

-22-

Masonry / Concrete Cutting

With this grinder it i s possible to perfo rm cutting of concrete and masonry materials. Wh en cutt ing, wo rk with mo derat e f eed, adapted to the material being cut.

Always follow precautions for kickback.

Operate the tool with a dust extraction system and personal dust protection, e.g. respirator, dust mask, etc. The vacuum used for this application must be approved for the extraction of masonry and concrete dust. Bosch sells suitable vacuum cleaners.

Never pull the tool backward since blade will climb out of

the material and KICKBACK will occur.

1. Allow the tool to reach full speed before touching the tool to the work surface.

2. If plunge cutting:

a. Tilt tool forward with wheel lined up with

the cut line an d hold the tool by the grinder body and the auxiliary handle (Fig. 21).

b. Gradually lower the rear of tool using the

front end of the foot as the hinge point.

c. When the foot rests flat on the surface

being cut, proceed cutting in forward direction to end of cut.

3. Always maintain contact between the guard foot and work piece.

4. Slide the tool forward at a moderate speed adapted to the material being cut. Always cut towards the dust e xtr action p ort to ma x imize dust ex tract i on and reduce likelihood of kickback (Fig. 22).

5. App l y minim u m press u re to the wo r k surface, allowing the tool to operate at high speed. Cutting rate is greatest when the tool operates at high speed.

6. When the cut is completed, remove tool from work piece before turning off. Allow wheel to stop rotating before setting tool down.

Tip: When performing deep cuts, it is best to cut in several shallow passes. Each pass should be only to the segment depth of the wheel. Masonry dust is abrasive and may wear and weaken the segment bond.

When cutting especially hard material, e. g., concrete with high pebble content, the dry diamond wheel can overheat and become damaged. This is clearly indicated by circular sparking of the rotating dry diamond wheel. In this case, interrupt the cutting process and allow the dry diamond wheel to cool by running the tool for a s hort perio d o f t ime at th e maximum speed with no-load.

Noticeable decreasing work progress and circ ular sparking are indicati ons of a d ry diamond wheel that has become dull. Briefly cutting into abrasive materials (e. g. brick) can resharpen the wheel.

FIG. 22

FIG

WARNING

2610041357 09-15 GWS10 GWS13.qxp_GWS series 9/18/15 12:56 PM Page 22

Sanding

Sanding discs range in grit from 16 (very course) to 180 (very fine). They also vary in size and spacing of grit.

OPEN COAT (type H) is used for soft materials and on paint and varnish, CLOSED COAT (type K) is used for metal, hardwood, stone, marble and other materials. To obtain best results, select sanding discs carefully. Many jobs require the use of several grit sizes and at times both open coat and closed coat discs are required to complete the job. See chart for application examples.

1. Allow the tool to reach full speed before touching the tool to the work surface.

2. App l y minim u m pressu r e to the wo r k surface, allowing the tool to operate at high speed. Sanding rate is greatest when the tool operates at high speed.

3. Maintain a 10° to 15° angle between the tool and work surface, (Fig. 23).

4. Continuously move the tool at a moderate speed to avoid creating gouges in the work surface.

5. Remove the tool from work surface before turning tool off. Allow the tool to stop rotating before laying it down.

Tips: Guide the disc with crisscross strokes. Do not use a circular motion as this makes swirl marks.

-23-

Operation: Refinishing painted wood or metal surfaces.

REMARKS GRIT

To remove paint and to smooth surface irregularities.

Coarse

16-24-30

To smooth the rough sanding.

Medium

36-50-80

To remove scratches left by previous discs.

Fine

100-120

To smooth surfaces for painting, polishing or waxing.

Very Fine

150-180

Concrete Surfacing

Diam ond c up wh eels sho uld b e car efully selected in order to use the grinder most efficiently. Wheels vary in type of material they are designed to remove and how aggressively they will remove material. The correct wheel to use is determined by the job.

1. Allow the tool to reach full speed before touching the tool to the work surface.

2. Hold the tool with two hands and keep diamond wheel flat on the work surface.

3. Apply minimum pressure, allowing the tool t

o operate at high speed. Removal rate is greatest when the tool operates at high speed.

4. Continuously move the tool at a moderate speed to avoid creating gouges in the work surface.

5. Remove the tool from work surface before turning tool off. Allow the tool to stop rotating before laying it down.

Tip: For optimal dust collection, all sides of the surfacing dust collection guard must stay in contact with the surface and the surfacing guard must be connected to a vacuum. A dull diamond wheel can be sharpened by briefly surf acing an a bra sive material (eg. sand stone).

FIG. 23

2610041357 09-15 GWS10 GWS13.qxp_GWS series 9/18/15 12:56 PM Page 23

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Bosch GWS10-45, GWS10-45P, GWS10-45PD, GWS13-50, GWS13-50P Owner's Manual

Specifications and Main Features

Frequently Asked Questions

User Manual