Bosch 1347A, 1348AE User Manual
BM F000622188 12-04 12/10/04 9:27 PM Page 1
IMPORTANT: IMPORTANT : IMPORTANTE:
Read Before Using Lire avant usage Leer antes de usar
Operating/Safety Instructions
Consignes de fonctionnement/sécurité
Instrucciones de funcionamiento y seguridad
1347A
1348AE
Call Toll Free
for Consumer Information
& Service Locations
1-877-BOSCH99 (1-877-267-2499) www.boschtools.com
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BM F000622188 12-04 12/10/04 9:27 PM Page 2
Power Tool Safety Rules
WARNING
!
Read and understand all instructions. Failure to follow all instructions
l
isted below, may result in electric shock, fire and/or serious personal injury.
SAVE THESE INSTRUCTIONS
Work Area
Keep your work area clean and well lit.
Cluttered benches and dark areas invite
accidents.
Do not operate power tools in explosive
atmospheres, such as in the presence of
flammable liquids, gases, or dust.
tools create sparks which may ignite the dust
or fumes.
Keep by-standers, children, and visitors
away while operating a power tool.
Distractions can cause you to lose control.
Power
Electrical Safety
Double Insulated tools are equipped with a
polarized plug (one blade is wider than the
other.) This plug will fit in a polarized outlet
only one way. If the plug does not fit fully
in the outlet, reverse the plug. If it still does
not fit, contact a qualified electrician to
install a polarized outlet. Do not change
the plug in any way.
eliminates the need for the three wire
grounded power cord and grounded power
supply system.
Before plugging in the tool, be
certain the outlet voltage supplied is within the
voltage marked on the nameplate. Do not use
“AC only” rated tools with a DC power supply.
Avoid body contact with grounded
surfaces such as pipes, radiators, ranges
and refrigerators.
of electric shock if your body is grounded. If
operating the power tool in damp locations is
unavoidable, a Ground Fault Circuit Interrupter
must be used to supply the power to your tool.
Electrician’s rubber gloves and footwear will
further enhance your personal safety.
Don't expose power tools to rain or wet
conditions.
increase the risk of electric shock.
Do not abuse the cord. Never use the cord
to carry the tools or pull the plug from an
outlet. Keep cord away from heat, oil, sharp
edges or moving parts. Replace damaged
cords immediately.
the risk of electric shock.
Water entering a power tool will
Double Insulation
There is an increased risk
Damaged cords increase
When operating a power tool outside, use
an outdoor extension cord marked "W-A"
or "W."
and reduce the risk of electric shock. Refer to
“Recommended sizes of Extension Cords” in
the Accessory section of this manual.
These cords are rated for outdoor use
Personal Safety
Stay alert, watch what you are doing and
use common sense when operating a
power tool. Do not use tool while tired or
under the influence of drugs, alcohol, or
medication.
operating power tools may result in serious
personal injury.
Dress properly. Do not wear loose clothing
or jewelry. Contain long hair. Keep your
hair, clothing, and gloves away from
moving parts.
hair can be caught in moving parts. Keep
handles dry, clean and free from oil and
grease.
Avoid accidental starting. Be sure switch is
“OFF” before plugging in.
your finger on the switch or plugging in tools
that have the switch “ON” invites accidents.
Remove adjusting keys or wrenches before
turning the tool “ON”.
is left attached to a rotating part of the tool may
result in personal injury.
Do not overreach. Keep proper footing and
balance at all times.
balance enables better control of the tool in
unexpected situations.
Use safety equipment. Always wear eye
protection.
hard hat, or hearing protection must be used
for appropriate conditions.
A moment of inattention while
Loose clothes, jewelry, or long
Carrying tools with
A wrench or a key that
Proper footing and
Dust mask, non-skid safety shoes,
Tool Use and Care
Use clamps or other practical way to
secure and support the workpiece to a
stable platform.
against your body is unstable and may lead to
loss of control.
Holding the work by hand or
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Do not force tool. Use the correct tool for
your application.
job better and safer at the rate for which it is
designed.
Do not use tool if switch does not turn it
“ON” or “OFF”.
c
ontrolled with the switch is dangerous and
must be repaired.
Disconnect the plug from the power source
before making any adjustments, changing
accessories, or storing the tool.
preventive safety measures reduce the risk of
starting the tool accidentally.
Store idle tools out of reach of children and
other untrained persons.
dangerous in the hands of untrained users.
Maintain tools with care. Keep cutting tools
sharp and clean.
with sharp cutting edges are less likely to bind
and are easier to control. Any alteration or
modification is a misuse and may result in a
dangerous condition.
Check for misalignment or binding of
moving parts, breakage of parts, and any
other condition that may affect the tools
The correct tool will do the
Any tool that cannot be
Such
Tools are
Properly maintained tools,
operation. If damaged, have the tool
serviced before using.
caused by poorly maintained tools. Develop a
periodic maintenance schedule for your tool.
Use only accessories that are recommended by the manufacturer for your
m
one tool, may become hazardous when used
on another tool.
A
odel.
ccessories that may be suitable for
Many accidents are
Service
Tool service must be performed only by
qualified repair personnel.
maintenance performed by unqualified
personnel could result in a risk of injury. For
example: internal wires may be misplaced or
pinched, safety guard return springs may be
improperly mounted.
When servicing a tool, use only identical
replacement parts. Follow instructions in
the Maintenance section of this manual.
Use of unauthorized parts or failure to follow
Maintenance Instructions may create a risk of
electric shock or injury. Certain cleaning
agents such as gasoline, carbon tetrachloride,
ammonia, etc. may damage plastic parts.
Service or
Angle Grinder Safety Rules
Always use proper guard with grinding
wheel.
broken wheel fragments. When using
grinding wheel attachments, the guard must
always be attached to the tool and positioned
for maximum safety, so the least amount of
wheel is exposed from the side the tool is
being operated.
Accessories must be rated for at least the
speed recommended on the tool warning
label.
over rated speed can fly apart and cause
injury. Grinding wheels or any other
accessory must have a maximum safe
operating speed greater than the “no load
RPM” marked on the tool’s nameplate.
Hold tool by insulated gripping surfaces
when performing an operation where the
cutting tools may contact hidden wiring
or its own cord.
will make exposed metal parts of the tool
“live” and shock the operator.
A guard protects operator from
Wheels and other accessories running
Contact with a “live” wire
Always use auxiliary handle for maximum
control over torque reaction or kick-back.
Operation of the grinder without the side
handle could cause loss of control of the
grinder, resulting in possible serious personal
injury.
Before using a grinder or installing a new
wheel, inspect the grinding wheel for
chips and cracks. Remove bad wheels
immediately. Run the tool at no load for
one minute, holding the tool in the
direction away from people.
flaws will normally break apart during this
time.
Carefully handle both the tool and
individual grinding wheels to avoid
chipping or cracking. Install a new wheel
if tool is dropped while grinding. Do not
use a wheel that may be damaged.
Fragments from a wheel that bursts during
operation will fly away at great velocity
possibly striking you or bystanders.
Wheels with
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Do not use grinding wheel that is larger
than the maximum recommended size for
your tool, or worn down damaged wheels
from larger grinders.
large angle sander/grinders are not suitable
for the high speed of a small angle
sander/grinder, these wheels may easily
b
urst and the fragments strike you or
bystanders.
Do not use depressed hub grinding
wheels for cut-off operations.
hub wheels or type 27 wheels are not
intended for side loading and may shatter
under overload.
Do not use this tool with “Woodcarving”
Such blades create frequent kick-back
blade.
and loss of control.
Wear proper apparel while using a
sander/grinder.
safety goggles, dust mask, leather gloves
and shop apron capable of stopping small
wheel or workpiece fragments.
Position the cord clear of the spinning
grinding wheel or any other sanding
accessory. Do not wrap the cord around
your arm or wrist.
have the cord wrapped around your arm or
wrist it may entrap you and cause injury.
Avoid bouncing and snagging the wheel,
especially when working corners, sharp
edges etc.
and kick-back.
Regularily clean the tool’s air vents by
compressed air.
powdered metal inside the motor housing
may cause electrical failures.
Do not grind or sand near flammable
materials.
ignite these materials.
This tool can be converted to a sander.
When grinding is resumed the proper
guard and wheel flanges MUST be
reinstalled before proceeding with
grinding. The guard must always be
attached to the tool and positioned for
maximum safety, so the least amount of
This can cause loss of control
Sparks from the wheel could
Wheels intended for
Depressed
Face shield or at least
If you lose control and
Excessive accumulation of
wheel is exposed from the side the tool is
being operated.
cannot be used for most sanding operations
or for wire brushing.
When sanding, do not use oversized
sanding disc.
e
xtend beyond the sanding pad causing
snagging, tearing of the disc or kick-back.
Extra paper extending beyond the sanding
pad can also cause serious lacerations.
When sanding chemically pressure
treated lumber, paint that may be lead
based, or any other materials that may
contain carcinogens, use special precautions.
must be worn by all personal entering the
work area. Work area should be sealed by
plastic sheeting and persons not protected
should be kept out until work area is
thoroughly cleaned.
Direct the discharge of the spinning wire
brush away from you.
tiny wire fragments may be discharged at
high velocity during the “cleaning” action with
these brushes and may become imbedded in
your skin.
!
WARNING
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 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.
The grinding wheel guard
Larger sanding disc will
A suitable breathing respirator
Small particles and
Some dust created by
power sanding, sawing,
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A
0
A
A
0
A
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Symbols
IMPORTANT: Some of the following symbols may be used on your tool. Please study them
a
nd learn their meaning. Proper interpretation of these symbols will allow you to operate the
tool better and safer.
Symbol Name Designation/Explanation
V Volts Voltage (potential)
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.
n
0
.../min Revolutions or reciprocation per minute Revolutions, strokes, surface speed,
0 Off position Zero speed, zero torque...
1, 2, 3, ... Selector settings Speed, torque or position settings.
I, II, III, Higher number means greater speed
No load speed Rotational speed, at no load
orbits etc. per minute
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
Ni-Cad RBRC seal Designates Ni-Cad battery recycling
program
This symbol designates
that this tool is listed by
Underwriters Laboratories.
This symbol designates
that this tool is listed by
the Canadian Standards
Association.
This symbol designates
that this tool is listed to
Canadian Standards by
Underwriters Laboratories.
This symbol designates that
this tool is listed by
Underwriters Laboratories,
and listed to Canadian
Standards by Underwriters
Laboratories.
This symbol
designates
that
this tool
complies
to NOM
Mexican
Standards.
-5-
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Functional Description and Specifications
WARNING
!
Disconnect the plug from the power source before making any
assembly, adjustments or changing accessories.
measures reduce the risk of starting the tool accidentally.
Angle Grinders
SWITCH
BUTTON
SIDE HANDLE
Such preventive safety
VENTILATION
OPENINGS
SPINDLE LOCK
COLLAR
SCREW
GRINDING
WHEEL
WHEEL
GUARD
Model number 1347A 1348AE
Maximum Capacities
Max. wheel diameter
4 1/2" (115mm)
5" (127mm)
Spindle thread 5/8"-11 UNC 5/8"-11 UNC
Max. wire wheel 4" Dia. 4" Dia.
Max. wire cup brush 3" Dia. 3" Dia.
Max. sanding disc
4 1/2" Dia.
4 1/2" Dia.
Max. cut off wheel 4 1/2" Dia. 4 1/2" Dia.
Max. dry diamond wheel 4 1/2" Dia. 4 1/2" Dia.
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Assembly
T
W
HEEL GUARD INSTALLATION
WARNING
!
Wheel guard must be
attached when using disc
grinding wheels. Always keep wheel guard
between you and your work while grinding.
o attach the wheel guard DISCONNECT
tool from power source.
Position the guard on spindle neck, then
secure guard with the collar screw.
LOCK NUT AND BACKING FLANGE
Your tool is equipped with a threaded spindle
for mounting accessories. Always use the
supplied lock nut (and backing flange) that
has same thread size as spindle.
Disc Grinding Wheel Assembly
Disconnect tool from power source. Be sure
that wheel guard is in place for grinding.
Thread BACKING FLANGE onto spindle,
then place GRINDING WHEEL on the
spindle. Thread on the lock nut and tighten
nut using the supplied lock nut wrench, while
holding the spindle lock in.
TO REMOVE: Reverse procedure.
SPINDLE
GRINDING
WHEEL
BACKING
FLANGE
The side handle used to guide and balance the
SIDE HANDLE
tool can be threaded into the front housing on
either side of the tool, depending on personal
preference and comfort. Use the side handle
for safe control and ease of operation.
SPINDLE
WHEEL
GUARD
BACKING
FLANGE
GRINDING
WHEEL
COLLAR
SCREW
LOCK NUT
LOCK NUT
-7-
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Masonry Cutting Wheel Assembly
F
or cutting masonry materials like brick, tile,
stone, etc., it is best to use a dry diamond
cutting wheel. Use only lock nut and flange
with equal diameters. The wheel guard must
be used with a dry diamond cutting wheel.
WARNING
!
cutting.
Disconnect tool from power source before
attaching cutting wheel. With wheel guard in
place, assemble flange, cutting wheel and
lock nut as illustrated on page 7.
When cutting, make only small passes
through workpiece at a time. Be aware that
“Kickback” can occur at any time. Keep both
hands on tool for maximum control.
Do not use water or other
cooling fluid with this tool for
BACKING
DRY DIAMOND
W
HEEL
GUARD
FLANGE
WHEEL
LOCK NUT
SPINDLE
C
OLLAR
SCREW
Sanding Accessories Assembly
BACKING PAD
WARNING
!
safe operating speed is not exceeded by the
nameplate speed of the tool.
WARNING
!
operations. Always reinstall wheel guard
when converting back to grinding operations.
TO INSTALL BACKING PAD AND
Disconnect tool from power source. Set the
tool on its top side (spindle up). Place the
rubber backing pad onto the spindle shaft.
Center the sanding disc on top of the backing
pad. Insert the lock nut through the disc and
thread onto the spindle as far as you can with
your fingers. Press in the spindle lock, then
tighten the backing pad securely with lock nut
wrench.
TO REMOVE BACKING PAD AND
Disconnect tool from power source. Using
the lock nut wrench unscrew the nut from the
spindle, while holding spindle lock in.
Before attaching a backing
pad be sure its maximum
Wheel guard may not be
used for most sanding
SANDING DISC
SANDING DISC
Before assembling wire brush to this tool,
WIRE BRUSH ASSEMBLY
disconnect from the power source. Wire
brushes are equipped with their own
threaded hub, simply thread on to spindle. Be
sure to seat against shoulder before turning
tool “ON”.
SPINDLE
BACKING
PAD
SANDING
DISC
LOCK NUT
WIRE BRUSH
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Operating Instructions
SLIDE ON-OFF SWITCH WITH LOCK
The tool is switched “ON” by the switch
button located at the side of the motor
housing. The switch can be locked in the
“ON” position, a convenience for long
grinding operations.
TO TURN THE TOOL “ON” without locking it,
slide the switch button forward by applying
pressure ONLY at the REAR portion of the
button. When pressure is released the switch
button will snap to “OFF” position.
TO LOCK THE SWITCH “ON”, slide the
switch button forward and press “IN” the
FRONT portion.
TO UNLOCK THE SWITCH, simply press
and release the REAR portion of the button.
Switch is spring loaded and will snap back
automatically.
Grinding Operations
SELECTING GRINDING WHEELS
WARNING
!
maximum safe operating speed is not
exceeded by the nameplate speed of the
grinder. Do not exceed the recommended
wheel diameter.
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
type of 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.
Before using a grinding
wheel, be certain that its
DISC GRINDING WHEELS
WARNING
!
torque from the motor can cause the tool to
twist.
ELECTRONIC FEEDBACK CIRCUITRY (EFC)
The internal electronic feedback system
provides a "soft start", which will reduce the
stresses that occur from a high torque start.
The system also helps to keep the no load
speed virtually constant between no-load and
load conditions.
Start the tool before applying to work and let
the tool come to full speed before contacting
the workpiece. Lift the tool from the work
before releasing the switch. DO NOT turn the
switch “ON” and “OFF” while the tool is
under load; this will greatly decrease the
switch life.
Efficient grinding is achieved by controlling
the pressure and keeping the angle between
wheel and workpiece at 10° to 15°. If the
wheel is flat, the tool is difficult to control. If
the angle is too steep, the pressure is
concentrated on a small area causing
burning to the work surface.
WARNING
!
slow grinding action and put dangerous
stresses on the wheel.
When grinding with a new wheel be certain
to grind while pulling tool backwards until
wheel becomes rounded on its edge. New
wheels have sharp corners which tend to
“bite” or cut into workpiece when pushing
forward.
Hold the tool with both hands
while starting the tool, since
(Model 1348AE only)
GRINDING TIPS
Excessive or sudden
pressure on the wheel will
Sanding Operations
SELECTING SANDING DISC
Sanding discs are made of extremely hard
and sharp aluminum oxide grits, phenol-resin
bonded to a sturdy fiber backing for fast
heavy-duty service and long life. The discs
vary as to size and spacing of the abrasive
grits. OPEN COAT (type H) — used for soft
materials and on paint or varnish. CLOSED
COAT (type K) —used for metal, hardwood,
stone, marble and other materials.
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Sanding discs range in grit from 16 (very
coarse) to 180 (very fine). 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 get the job done faster.
See chart for application examples.
Operation: Refinishing painted wood or metal surfaces.
EMARKS GRIT
R
To remove paint and to smooth Coarse
surface irregularities. 16-24-30
o smooth Medium
T
the rough sanding. 36-50-80
o remove scratches left by Fine
T
previous discs. 100-120
o smooth surfaces for painting, Very Fine
T
polishing or waxing. 150-180
SANDING TIPS
For best results, tilt the Disc Sander at a 10°
to 15° angle while sanding so that only about
1" of the surface around the edge of the disc
contacts the work.
WARNING
!
If the disc (accessory) is
held flat or the back edge of
the disc comes in contact with the work, a
violent thrust to the side may result.
If sander is tilted too much, sanding action
will be too great and a rough cut surface or
g
ouging and snagging will result.
Guide the Disc Sander with crosswise
strokes. Be careful not to hold the sander in
one spot too long. Do not use a circular
motion, as this makes swirl marks. Test
before use on scrap stock.
Do not force or apply pressure when
sanding. Use only the weight of the tool for
pressure. Excess pressure actually slows the
tool down. If faster stock removal is desired,
change to a coarser grit disc.
Remove gummy paint from metal with an
“open coat” disc. Sand until sparks start to
appear, then stop and change to a “closed
coat” disc to remove any remaining paint.
When sanding wood the direction of the disc
SANDING WOOD
motion at the contact point should parallel the
grain as much as possible. The rapid cut of
discs and the swirl type scratch pattern they
occasionally create generally prohibit their
use for producing the final finish.
Scratches and circular marks are usually the
result of using too coarse a grit. When
changing to a finer grit, move across the
sanding lines that were made by a previous
coarser disc.
Wire Brush Operations
Wire brushes are intended to “clean”
structural steel, castings, sheet metal, stone
and concrete. They are used to remove rust,
scale and paint.
When sanding automobiles or appliances,
SANDING METAL
wipe the metal clean with a non-flammable
solvent or commercial cleaner to remove all
wax and grease. By doing this first, the
sanding discs will sand better and last longer.
For heavy duty work, use a coarse grit disc
first. Follow-up with a medium grit to remove
scratches. To produce smooth finish, use fine
grit disc.
WARNING
!
Avoid bouncing and snagging
the wire brush, especially
when working corners, sharp edges etc. This
can cause loss of control and kick-back.
-10-
15°
BM F000622188 12-04 12/10/04 9:27 PM Page 11
1. Remember, the tips of a wire brush do the
work. Operate the brush with the lightest
pressure so only the tips of the wire come in
contact with the work.
2. If heavier pressures are used, the wires
will be overstressed, resulting in a wiping
CORRECT:
Wire tips doing
BRUSHING PRESSURE
the work.
Maintenance
Service
WARNING
!
orized personnel may result in misplacing
of internal wires and components which
could cause serious hazard.
recommend that all tool service be performed
by a Bosch Factory Service Center or Authorized Bosch Service Station.
Your Bosch tool has been properly lubricated
and is ready to use. It is recommended that
tools with gears be regreased with a special
gear lubricant at every brush change.
The brushes and commutator in your tool
have been engineered for many hours of
dependable service. To maintain peak
efficiency of the motor, we recommend every
two to six months the brushes be examined.
Only genuine Bosch replacement brushes
specially designed for your tool should be
used.
After about 300-400 hours of operation, or at
every second brush change, the bearings
Preventive maintenance
performed by unauth-
We
TOOL LUBRICATION
CARBON BRUSHES
BEARINGS
action; and if this is continued, the life of the
brush will be shortened due to wire fatigue.
3. Apply the brush to the work in such a way
that as much of the brush face as possible is
in full contact with the work. Applying the side
or edge of the brush to the work will result in
wire breakage and shortened brush life.
INCORRECT:
Excessive
pressure can
cause wire
breakage.
should be replaced at Bosch Factory Service
Center or Authorized Bosch Service Station.
Bearings which become noisy (due to heavy
load or very abrasive material cutting) should
be replaced at once to avoid overheating or
motor failure.
Cleaning
WARNING
!
the power supply before cleaning or
performing any maintenance.
be cleaned most effectively with compressed
dry air.
cleaning tools with compressed air.
Ventilation openings and switch levers must
be kept clean and free of foreign matter. Do
not attempt to clean by inserting pointed
objects through openings.
plastic parts.
carbon tetrachloride, chlorinated cleaning
solvents, ammonia and household
detergents that contain ammonia.
Always wear safety goggles when
CAUTION
!
To avoid accidents always
disconnect the tool from
The tool may
Certain cleaning agents
and solvents damage
Some of these are: gasoline,
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