Bosch GWX13-50, GWX13-50VSP User Manual
IMPORTANT
Read Before Using
IMPORTANT
Lire avant usage
IMPORTANTE
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Operating / Safety Instructions
Consignes d’utilisation / de sécurité
Instrucciones de funcionamiento y seguridad
GWX13-50
GWX13-50VSP
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Versión en español
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1600A019ZE 05-19 GWX13.indd 1 5/28/19 3:15 PM
page headingContents
Safety Symbols ............................................ 3
General Power Tool Safety Warnings ...........3
Work Area Safety .......................................3
Electrical Safety ......................................... 3
Personal Safety ..........................................3
Power Tool Use and Care ........................... 4
Service ....................................................... 4
Power Tool-Specific Safety Warnings ...........5
Safety Warnings Common
for Grinding, Sanding, Wire
Brushing, and Abrasive
Cutting-Off Operations ..............................5
Kickback and Related Warnings .................6
Safety Warnings Specific
for Grinding and Abrasive
Cutting-Off Operations ..............................6
Additional Safety Warnings
Specific for Abrasive
Cutting-Off Operations ..............................7
Safety Warnings Specific for
Sanding Operations ................................... 7
Safety Warnings Specific for Wire Brushing
Operations ................................................. 7
Additional Safety Warnings ..........................8
Symbols ....................................................... 9
Functional Description and Specifications 11
Basic X-Lock Operation ..............................14
Assembly ....................................................15
Installing Side Handle .............................. 15
Hand Shield .............................................15
Installing Wheel Guards
(Type 27 and Type 41/1A
Wheel Guards) ......................................... 16
Mounting and Removing
X-Lock Accessories ..................................17
Abrasive Type 27 Grinding
Wheel & Sanding Flap Disk
Assembly .................................................. 19
Abrasive Type 41/1A
Cutting Wheel Assembly .......................... 19
Sanding Assembly ................................... 20
Wire Cup Brush Assembly ........................21
Wire Wheel Assembly ...............................21
Masonry Cutting Guard
Assembly .................................................. 22
Installing Masonry Type 41/1A
Cutting Guard .......................................... 23
Installing Dry Diamond Wheel.................. 23
Operating Instructions ...............................24
Paddle Switch (Fig. 21) ...........................24
Slide Switch (Fig. 23) .............................. 24
Metal Grinding ......................................... 25
Metal Cutting ........................................... 25
Masonry / Concrete Cutting ....................26
Sanding .................................................... 27
Wire Brush (Wheels and Cups) ................28
Maintenance ..............................................28
Service ..................................................... 28
Tool Lubrication ....................................... 28
Carbon Brushes ....................................... 29
Cleaning ................................................... 29
Accessory Storage &
Maintenance ............................................29
Extension Cords.........................................29
Accessories ................................................ 29
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page heading
The definitions below describe the level of severity for each signal word.
Please read the manual and pay attention to these symbols.
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that follow this
symbol to avoid possible injury or death.
DANGER indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
WARNING indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
Safety Symbols
General Power Tool Safety Warnings
Read all safety warnings and all instructions. Failure to follow the
warnings and instructions may result in electric shock, fire and/or seri-
ous injury.
SAVE ALL WARNINGS AND INSTRUCTIONS FOR FUTURE REFERENCE
The term “power tool” in the warnings refers to your mains-operated (corded) power
tool or battery-operated (cordless) power tool.
▶ Work Area Safety
Keep work area clean and well lit. Clut-
tered 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 use any adapter plugs with 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 out-
door 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.
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General Power Tool Safety Warnings
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 bet-
ter control of the power tool in unexpected 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. Use the correct power tool for your application. The
correct power tool will do the job better
and safer at the rate for which it was designed.
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.
Disconnect the plug from the power
source and/or the battery pack from the
power tool before making any adjustments, changing accessories, or storing
power tools. Such preventive safety mea-
sures 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. Many accidents are caused by
poorly maintained power tools.
Keep cutting tools sharp and clean. Prop-
erly 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 op-
erations different from those intended
could result in a hazardous situation.
▶ Service
Have your power tool serviced by a qualified repair person using only identical
replacement parts. This will ensure that
the safety of the power tool is maintained.
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Power Tool-Specific Safety Warnings
▶ Safety Warnings Common
for Grinding, Sanding, Wire
Brushing, and Abrasive
Cutting-Off Operations
This 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 are 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. In-
correctly 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 accesso-
ries will normally break apart during this
test time.
Wear personal protective equipment. Depending 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 particles generated by your operation. 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. Fragments of workpiece
or of a broken 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.
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Power Tool-Specific Safety Warnings
Regularly clean the power tool’s air
vents. The motor’s fan will draw the dust
inside the housing and excessive accumulation of powdered metal may cause electrical hazards.
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 cool-
ants may result in electrocution or shock.
Only use Bosch or Bosch licensed X-Lock
accessories. Incompatible accessories
may not clamp properly resulting in personal injury and/or property damage.
Confirm proper clamping by ensuring
that top of the accessory flange surface
is not above the top of the accessory
height gage. Accessories that are above
the accessory height gage may not be
clamped properly and separate from the
tool causing personal injury and/or property damage.
Always inspect accessory mount and accessory clamping flange before use. Do
not use the tool or accessory if the accessory mount or accessory is damaged
or deformed. Accessories that are not
clamped properly may cause personal injury and/or property damage.
Check for presence or buildup of foreign
material on tool and accessory clamping
surfaces and remove before use. Unwant-
ed material can cause incomplete clamping and may cause personal injury and/or
property damage.
Never actuate X-Lock Release Lever while
accessory is moving. Make sure that the
accessory has come to a complete stop
before removing the accessory. Releasing
accessory while still spinning could cause
personal injury and/or property damage.
direction opposite of the accessory’s rotation at the point of the binding.
For example, if an abrasive wheel is
snagged or pinched by the workpiece, the
edge of the wheel that is entering into the
pinch point can dig into the surface of the
material causing the wheel to climb out
or kickout. The wheel may either jump toward or away from the operator, depending on direction of the wheel’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 incorrect operating procedures 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 reactions or kickback forces, if proper 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. Kickback will propel the tool in di-
rection opposite to the wheel’s movement
at the point of snagging.
Use special care when working corners,
sharp edges etc. Avoid bouncing and snag-
ging 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.
▶ 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
▶ 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. Wheels for which the power tool
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Power Tool-Specific Safety Warnings
was not designed cannot 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.
The guard must be securely attached to
the power tool and positioned for maximum safety, so the least amount of wheel
is exposed towards the operator. The
guard helps to protect 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.
Abrasive cut-off wheels are intended 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 flang-
es 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.
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 correc-
tive 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 near 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.
▶ 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. Over-
stressing 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.
▶ 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. The
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Power Tool-Specific Safety Warnings
wire bristles can easily penetrate light
clothing and/or skin.
If the use of a guard is recommended for
wire brushing, do not allow any interfer-
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, ammonia, 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.
ence of the wire wheel or brush with the
guard. Wire wheel or brush may expand in
diameter due to work load and centrifugal
forces.
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 ce-
ment and other masonry products, and
• Arsenic and chromium from chemically-
treated lumber.
Your risk from these exposures varies, depending on how often you do this type of
work. To reduce your exposure to these
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.
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page heading
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)
⌀
n
n Rated speed (Maximum attainable speed)
.../min
0 Off position (zero speed, zero torque...)
1, 2, 3, ...
I, II, III,
Diameter (size of drill bits, grinding wheels, etc.)
No load speed (rotational speed, at no load)
0
Revolutions or reciprocation per minute (revolutions, strokes, surface
speed, orbits etc. per minute)
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)
Type or a characteristic of current
Type or a characteristic of current
Type or a characteristic of current
Designates Double Insulated Construction tools
Grounding terminal
Alerts user to warning messages
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1600A019ZE 05-19 GWX13.indd 9 5/28/19 3:15 PM
page heading
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
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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1600A019ZE 05-19 GWX13.indd 10 5/28/19 3:15 PM
page headingFunctional Description and Specifications
6
Fig. 1
Adjustment Button
X-Lock
Release
Lever
Grinding
Wheel
Accessory
Guard Release /
X-Lock
Mount
Type 27
Grinding
Guard
Variable Speed
(GWX13-50VSP)
Lock-ON Button
Paddle Switch
“Lock-OFF” Switch
Release Lever
Vibration
Control Side
Handle
Hand Shield
(Optional Accessory)
Model Number GWX13-50VSP
Amps 13
Volts AC 120
Rated Speed (RPM), /min 2800 - 11500
Max. grinding wheel ⌀ 5” (125mm)
Grinding wheel thickness 1/4” (6 mm)
Max. cutting wheel ⌀ 5” (125mm)
Max. sanding disc ⌀ 5” (125mm)
Max. flap disc ⌀ 5” (125mm)
Max. wire wheel ⌀ 4” (102mm)
Max. wire cup ⌀ 3” (76mm)
Variable speed ●
Electronic clutch ●
Constant response circuitry ●
Restart protection ●
Overload protection ●
Soft start ●
Type 41/1A
Cutting Guard
(Optional Accessory)
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Fig. 2
X-Lock
Release Lever
Grinding
Wheel
Guard Release /
Adjustment Button
X-Lock
Accessory
Mount
page headingFunctional Description and Specifications
Side
Switch
Type 27
Grinding
Guard
Vibration
Control Side
Handle
Hand Shield
(Optional Accessory)
Type 41/1A
Cutting Guard
(Optional Accessory)
Model Number GWX13-50
Amps 13
Volts AC 120
Rated Speed (RPM), /min 11500
Max. grinding wheel ⌀ 5” (125mm)
Grinding wheel thickness 1/4” (6 mm)
Max. cutting wheel ⌀ 5” (125mm)
Max. sanding disc ⌀ 5” (125mm)
Max. flap disc ⌀ 5” (125mm)
Max. wire wheel ⌀ 4” (102mm)
Max. wire cup ⌀ 3” (76mm)
Electronic clutch ●
Constant response circuitry ●
Restart protection ●
Overload protection ●
Soft start ●
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page headingFunctional Description and Specifications
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.
Model Number GWX13-50 GWX13-50VSP
Metal Grinding (Type 27) X X
Metal Grinding (Type 11) N N
Metal Grinding (Type 1) N N
Metal Cutting (Type 41/1A) O O
Flap Disc Type 29 X X
Concrete Cutting O O
Sanding O O
Wire Brushing (Wheel) X X
Wire Brushing (Cup)
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.
Accessory speed rating must be equal to or greater than the tool’s speed rating. Do not
exceed the recommended wheel diameter.
O O
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Basic X-Lock Operation
The X-Lock system is a combination of
patented tool mount and accessory designs that provide the operator with fast
accessory changes. Available on select
Bosch angle grinders, X-Lock allows tool
free installation and removal of grinder accessories (grinding, cut-off wheels, wire
brushes, sanding discs, etc.). The X-Lock
system is a replacement for the traditional
method of attaching grinder accessories.
Traditional grinders have 5/ 8”-11 threaded spindles that require a nut and backing
flange to hold the accessory in place. To
replace an accessory, a wrench is used to
loosen or tighten the nut. X-Lock equipped
grinders have a tool free interface system,
eliminating the spindle, backing flange and
lock nut.
The X-Lock interface has a tool component
– X-Lock Accessory Mount, and an accessory component – typically an Accessory
X-Lock Mounting Hub. The two components have keyed alignment contours,
which help to ensure correct assembly of
accessory to tool.
The X-Lock Accessory Mount consists of
a round base, clamping height gages and
locking mechanism, which activates the
clamping tabs. X-Lock equipped grinders can only use X-Lock accessories since
the specially designed X-Lock Mounting
Hub matches the contours of the X-Lock
Accessory Mount on the tool (See figure
3). However, select X-Lock accessories are
backward compatible with the traditional
threaded spindle design.
Attachment of the X-Lock accessory to the
X-Lock Accessory Mount on the grinder
requires alignment of the mounting hub
with the accessory mounting mechanism.
Once the Accessory X-Lock Mounting Hub
is aligned, and pressed against the base of
the X-Lock Accessory Mount, the locking
mechanism is activated. This causes the
two opposing clamping tabs to lock the accessory to the grinder. An audible ‘click’ in
combination with the alignment of the flat
surface of the Accessory X-Lock Mounting hub with the Clamping Height Gages
means the accessory is firmly attached to
the tool. To remove the accessory, a lever
Fig. 3
Accessory
X-Lock
Mounting Hub
X-Lock
Accessory
Mount
Clamping
Height Gage
Base Clamping
Clamping Tab
Clamping Tab
Alignment
contours
Height Gage
Fig. 4
on the grinder gearhead is actuated which
will release the locking tabs, allowing the
accessory to be detached from the tool.
(Fig. 4)
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1600A019ZE 05-19 GWX13.indd 14 5/28/19 3:15 PM
Assembly
Disconnect the plug from the power source and/or remove the battery pack, if detachable, from the power tool before making any
adjustments, changing accessories, or storing power tools. Such preventive safety
measures reduce the risk of starting the power tool accidentally.
Hand Shield
Fig. 5
Side
Handle
(Optional Accessory)
▶ Installing Side Handle
The side handle is used to control and balance the tool.
Securely thread handle into either side of
gear housing, depending on personal preference, comfort, and operation being performed (Fig. 5).
The handle should always be installed
onto the guard protected side of the tool,
see figure 7. Use the side handle for safe
control and ease of operation.
▶ Hand Shield
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, burrs and debris.
When using the hand shield, insert side
handle through hole in shield and then
thread into housing (Fig. 5). Ensure that
hand shield is positioned between hand
and backing pad, sanding disc or wire
brush.
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1600A019ZE 05-19 GWX13.indd 15 5/28/19 3:15 PM
Assembly
▶ Installing Wheel Guards
(Type 27 and Type 41/1A
Wheel Guards)
A Type 27 guard must
be used with all grind-
ing wheels, 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
1. Unplug tool from power source.
2. Position appropriate guard on collar
mount so arrows on guard and collar
mount align (Fig. 6).
3. Rotate wheel guard clockwise 90º until
guard clicks in place.
4. Adjust guard by depressing guard release button and rotate to desired
position. Always position wheel guard
between operator and work piece
and direct sparks away from operator
(Fig. 7).
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
collar mount align (Fig. 6).
2. Remove guard from collar mount.
Fig. 6
Fig. 7
OPERATING ZONE
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1600A019ZE 05-19 GWX13.indd 16 5/28/19 3:15 PM
page headingAssembly
▶ Mounting and Removing
X-Lock Accessories
Only use Bosch or
Bosch licensed X-LOCK
accessories. Incompatible accessories
may not clamp properly resulting in personal injury and/or property damage.
Confirm proper clamp-
ing by ensuring that top
of the accessory X-Lock mounting hub
surface is not above the top of the clamping height gage. Accessories that are
above the clamping height gage may not
be fixed properly and separate from the
the tool causing personal injury and/or
property damage.
Always inspect acces-
sory mount and accessory clamping flange before use. Do not
use the tool or accessory if the accessory
mount or accessory is damaged or deformed. Accessories that are not clamped
properly may cause personal injury and/or
property damage.
Check for presence or
buildup of foreign material on clamping surfaces and remove before use. Unwanted material can cause in-
complete clamping and may cause
personal injury and/or property damage.
Never actuate X-Lock
Release Lever while accessory is moving. Make sure that the accessory has come to a complete stop before removing the accessory. Releasing
accessory while still spinning could cause
personal injury and/or property damage.
Verify that the accessory and the X-Lock
Accessory Mount are not deformed and
are free from dirt. If necessary, clean the
area around the two X-Lock Clamping
Tabs.
Verify that both X-Lock Clamping Tabs are
open (see Fig. 8) before fitting the X-Lock
accessory.
Fig. 8
Accessory
X-Lock
Mounting Hub
X-Lock
Accessory
Mount
Fig. 9
▼ Mounting accessory to the tool
1. Place the accessory on the X-Lock Accessory Mount, by aligning the alignment contours of the Accessory X-Lock
Mounting Hub with the X-Lock Accessory Mount on the grinder (Fig. 8).
2. Push the accessory into the X-Lock Accessory Mount. The accessory audibly
clicks as the Clamping Tabs lock into
place (Fig. 9).
3. Check that the edge of the Accessory
X-Lock Mounting Hub is correctly engaged in the slots of the X-Lock Clamping Tabs (Fig. 10). If the top surface of
the Accessory X-Lock Mounting Hub is
higher than the Clamping Height Gage
(located on each side of the X-Lock Accessory Mount), the X-Lock accessory
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1600A019ZE 05-19 GWX13.indd 17 5/28/19 3:15 PM
Assembly
must not be used until this condition
is eliminated by cleaning the X-Lock
Accessory Mount or replacing the accessory.
▼ Removing accessories
Never actuate X-Lock
Release Lever while accessory is moving. Make sure that the accessory has come to a complete stop before removing the accessory. Releasing
accessory while still spinning could cause
personal injury and/or property damage.
Do not touch grinding
and cutting discs until
they have cooled down. The discs can be-
come very hot while working.
Do not allow accesso-
ries to fall uncontrollably after release. Falling accessories can
become damaged and may cause personal
injury and/or property damage.
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.
Before removing the accessory: Make sure
that the power tool has come to a complete stop and is disconnected from power.
1. Orient the tool to prevent the accesso-
ry from being dropped during release.
2. Open the X-Lock Release Lever (Fig. 11):
(A) Press on the backside of the lever.
(B) Lift the front-side of the lever.
3. Remove the accessory from the tool
with care, preventing it from being
dropped.
Clamping
Height Gage
Accessory X-Lock
Mounting Hub
CORRECT: Height of Accessory
X-Lock Mounting Hub is equal or less
than X-Lock Accessory Mount
X-Lock Accessory
Mount
INCORRECT: Height of Accessory
X-Lock Mounting Hub is greater
than X-Lock Accessory Mount
X-Lock Accessory
Mount
Clamping Tabs
Accessory X-Lock
Accessory X-Lock
(A)
Fig. 11
(B)
Fig. 10
Clamping
Height Gage
Mounting Hub
Mounting Hub
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1600A019ZE 05-19 GWX13.indd 18 5/28/19 3:15 PM
Assembly
▶ Abrasive Type 27 Grinding
Wheel & Sanding Flap Disk
Assembly
Do not use accessories
that run eccentrically.
The tool will vibrate excessively and may
cause loss of control and the accessory
may burst.
To install grinding wheel or flap disk (Fig.
12) see instructions on page 17.
▶ Abrasive Type 41/1A
Cutting Wheel Assembly
Always use type 41/1A
cutting guard for cut-
ting operations. Other guards or attach-
ments may not protect operator in the
event of a wheel burst.
To install cutting wheel (Fig. 13) see instructions on page 17.
Fig. 12
Type 27
Wheel Guard
Type 27
Grinding
Wheel
Fig. 13
Type 41/1A
Wheel Guard
Type 41/1A
Cutting Wheel
Type 27
Cutting Wheel
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1600A019ZE 05-19 GWX13.indd 19 5/28/19 3:15 PM
Assembly
▶ Sanding Assembly
A type 27 wheel guard
may not be used 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. 5). Ensure
that hand shield is positioned between
hand and backing pad, sanding disc or
wire brush.
▼ To install backing pad and sanding
disc (Fig. 14)
1. Inspect Hand Shield to ensure that it is
properly attached to the grinder.
2. Place the Backing Pad onto the X-Lock
Accessory Mount with the rectangular
openings positioned around the X-Lock
Clamping Tabs.
3. Center the Sanding Disc on top of the
Backing Pad and align the rectangular
cut-outs with the Clamping Tabs on the
X-Lock Accessory Mount.
4. Align the X-Lock Clip with the slots in
the Sanding Disc. Insert the X-Lock
Clip through the Sanding Disc and apply pressure to it, until it is fully engaged by the Clamping Tabs, which will
be indicated by an audible “click”.
5. To remove the sanding assembly from
the grinder, follow instructions for
Mounting and Removing X-Lock Accessories starting on page 17.
Fig. 14
X-Lock
Clip
Sanding
Disc
Backing
Pad
Hand
Shield
Clamping
Tabs
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1600A019ZE 05-19 GWX13.indd 20 5/28/19 3:15 PM
page headingAssembly
▶ Wire Cup Brush Assembly
A type 27 wheel guard
may not be used for all
tool operations. Do not discard guard
when not in use. Always reinstall wheel
guard when converting back to grinding
operations. When using Wire Cup Wheels,
tool may be used without a guard.
Wear protective gloves
when handling wire
brush accessories. Handling of wire brush
accessories without gloves may result in
personal injury.
▼ To install wire cup brush (Fig. 15)
Follow instructions for Mounting and Removing X-Lock Accessories starting on
page 15.
▶ Wire Wheel Assembly
▼ To install wire wheel (Fig. 16)
1. Inspect and adjust Type 27 Grinding
Guard to the proper position, as shown
in figure 7 on page 16.
2. Follow instructions for “Mounting accessory to the tool” and “Removing the
accessories on page 17.
Fig. 15
Wire Cup
Brush
Hand
Shield
Fig. 16
Type 27
Wheel Guard
Wire Wheel
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1600A019ZE 05-19 GWX13.indd 21 5/28/19 3:15 PM
page heading
Assembly
▶ Masonry Cutting Guard
Assembly
A type 27 grinding
wheel guard may not be
used for all tool operations. Do not dis-
card guard when not in use. Always reinstall wheel guard when converting back to
grinding operations.
For cutting masonry, gearbox must be rotated relative to the position of the switch
as the tool was assembled at the factory.
▼ Rotate Gearbox
1. Completely unscrew the four screws
between the gear housing and motor
body.
2. Rotate gear housing to the proper orientation without removing motor from
the housing.
a. For the slide switch models (Fig.
17), rotate gear housing 180 degrees, so the switch is 90 degrees
from the X-Lock Accessory Mount.
b. For the paddle switch models (Fig.
18), rotate gear housing 90 degrees, so the switch is facing the
work piece.
3. After adjusting the position of the gear
housing, screw in and tighten the four
screws.
4. The screw holding the guard release lever is longer than the other screws (Fig.
19), this long screw must stay with the
guard release lever when re-attaching
gear housing for the guard release button to operate properly.
5. To install proper guard follow instructions in the next section.
Fig. 17
90
DEGREES
Fig. 18
Slide
Switch
180
DEGREES
180
DEGREES
Paddle
Switch
Under Tool
90
DEGREES
Fig. 19
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1600A019ZE 05-19 GWX13.indd 22 5/28/19 3:15 PM
page heading
Assembly
▶ Installing Masonry Type 41/1A
Cutting Guard
Follow all instructions provided with the
masonry Type 41/1A cutting guard to install and use it with this grinder.
▶ Installing Dry Diamond Wheel
Follow all instructions provided with the
masonry Type 41/1A cutting guard to prepare it for installation of compatible accessories and operation.
To install Dry Diamond Wheel (Fig. 20) see
instructions on page 17.
Dry Diamond
Wheel
Fig. 20
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1600A019ZE 05-19 GWX13.indd 23 5/28/19 3:15 PM
Operating Instructions
Never 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 the switch
“Lock-ON” feature in
situations where kickback is likely, such
as when working into a corner. When the
wheel binds, the tool will kick-back in opposite direction of wheel rotation and the
release of the trigger “Lock-ON” may be
difficult.
If the “Lock-ON” button
is continuously being
depressed, the trigger cannot be released.
▶ Paddle Switch (Fig. 21)
The paddle switch has a Lock-OFF feature
to help prevent accidental startups. TO
TURN TOOL “ON”, push Lock-Off switch
backward to unlock the paddle switch,
then squeeze paddle switch. TO TURN
TOOL “OFF”, release pressure on paddle
switch. The switch is spring loaded and
will return to the “OFF” position automatically.
If your tool has the Lock-ON feature incorporated into the paddle switch for extended operation, there will be a red button on
the bottom of the tool directly behind the
paddle switch, Fig. 22. TO LOCK SWITCH
“ON” after paddle switch has been activated, push “Lock-ON” button while simultaneously releasing pressure from the paddle switch. TO TURN TOOL “OFF”, squeeze
and release paddle switch.
▶ Slide Switch (Fig. 23)
TO TURN TOOL ON, press the back of the
switch and slide it forward towards the
gear housing until it comes to a stop and
Fig. 21
ON
Paddle Switch
Fig. 22
Fig. 23
the motor starts running. For Lock-ON,
when the switch is in the ON position,
press the front of the switch and release
it. the switch should remain in the LockON position and the tool will continue to
run.
TO TURN TOOL “OFF”, press the rear portion of the switch. The switch is spring
loaded and will return to the “OFF” position automatically.
OFF
Lock-ON Button
Side
Switch
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1600A019ZE 05-19 GWX13.indd 24 5/28/19 3:15 PM
Operating Instructions
▶ Metal Grinding
Grinding wheels should be carefully selected in order to use the grinder most efficiently. Wheels vary in type of abrasive,
bond, hardness, grit size and structure.
The correct wheel to use is determined by
the job. Use disc grinding wheels for fast
grinding of structural steel, heavy weld
beads, steel casting, stainless steel and
other ferrous metals.
1. Allow the tool to reach full speed before touching the tool to the work surface.
2. Apply minimum pressure to the work
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. 24).
▶ 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 may not provide the operator
sufficient protection in the event of a wheel
burst.
With this grinder it is possible to perform
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. Apply minimum pressure to the work
surface, allowing the tool to operate
Fig. 24
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: When grinding with a new wheel be
certain to grind while pulling tool backwards until the wheel becomes rounded
on its edge. New wheels have sharp edges
which tend to “bite” or cut into the work
piece when pushed forward.
Fig. 25
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. 25).
5. Remove the tool from the work surface before turning the tool off. Allow
the tool to stop rotating before laying
it down.
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1600A019ZE 05-19 GWX13.indd 25 5/28/19 3:15 PM
page headingOperating Instructions
▶ Masonry / Concrete Cutting
Never pull the tool
backward since blade
will climb out of the material and KICKBACK will occur.
With this grinder it is possible to perform
cutting of concrete and masonry materials. When cutting, work with moderate
feed, 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.
1. Allow the tool to reach full speed be-
fore touching the tool to the work surface.
2. If plunge cutting:
a. Tilt tool forward with wheel lined
up with the cut line and hold the
tool by the grinder body and the
auxiliary handle (Fig. 26).
b. Gradually lower the rear of tool us-
ing the front end of the foot as the
hinge point.
c. When the foot rests flat on the sur-
face 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 extraction port to maximize dust extraction and reduce likelihood of kickback
(Fig. 27).
5. Apply minimum pressure to the work
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 short period of time at the maximum
speed with no-load.
Noticeable decreasing work progress and
circular sparking are indications of a dry
diamond wheel that has become dull.
Briefly cutting into abrasive materials (e.
g. brick) can resharpen the wheel.
Fig. 26
Fig. 27
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1600A019ZE 05-19 GWX13.indd 26 5/28/19 3:15 PM
page headingOperating Instructions
▶ 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. Apply minimum pressure to the work
surface, allowing the tool to operate
at high speed. Sanding rate is greatest
when the tool operates at high speed.
Operation: Refinishing painted wood or metal surfaces.
REMARKS GRIT
To remove paint and to smooth surface irregularities. Coarse 16-24-30
Fig. 28
3. Maintain a 10° to 15° angle between
the tool and work surface, (Fig. 28).
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: Guide the disc with crisscross strokes.
Do not use a circular motion as this makes
swirl marks.
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
-27-
1600A019ZE 05-19 GWX13.indd 27 5/28/19 3:15 PM
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