Bosch 1873-8F, 1873-6, 1893-6, 1894-6, 1873-8 User Manual
BM 1609929H54 08-06 8/3/06 11:44 AM 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
1873-6
1873-8
1873-8F
1893-6
1894-6
Call Toll Free for
Consumer Information
& Service Locations
1-877-BOSCH99 (1-877-267-2499) www.boschtools.com
For English Version Version française Versión en español
See page 2
Pour obtenir des informations
et les adresses de nos centres
de service après-vente,
appelez ce numéro gratuit
Voir page 13 Ver la página 24
Llame gratis para
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ubicaciones de servicio
BM 1609929H54 08-06 8/3/06 11:44 AM Page 2
General Safety Rules
WARNING
!
all of the warnings listed below refers to your mains-operated (corded) power tool or batteryoperated (cordless) power tool.
Read all instructions. Failure to follow all instructions listed below may
r
esult in electric shock, fire and/or serious injury.
T
he term “power tool” in
SAVE THESE INSTRUCTIONS
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.
tools create sparks which may ignite the dust
or fumes.
Keep children and bystanders away while
operating a power tool.
cause you to lose control.
Distractions can
Power
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.
and matching outlets will reduce risk of
electric shock.
Avoid body contact with earthed or
grounded surfaces such as pipes,
radiators, ranges and refrigerators.
is an increased risk of electric shock if your
body is earthed or grounded.
Do not expose power tools to rain or wet
conditions.
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.
entangled cords increase the risk of electric
shock.
When operating a power tool outdoors,
use an extension cord suitable for
outdoor use.
outdoor use reduces the risk of electric
shock.
Do not use AC only rated tools with a DC
power supply.
work, the electrical components of the AC
rated tool are likely to fail and create a
hazard to the operator.
Water entering a power tool will
Use of a cord suitable for
While the tool may appear to
Unmodified plugs
There
Damaged or
If operating the power tool in damp
locations is unavoidable a Ground Fault
Circuit Interrupter (GFCI) must be used to
supply the power to your tool.
personal protection devices like electrician’s
rubber gloves and footwear will further
enhance your personal safety.
GFCI and
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.
inattention while operating power tools may
result in serious personal injury.
Use safety equipment. Always wear eye
protection.
mask, non-skid safety shoes, hard hat, or
hearing protection used for appropriate
conditions will reduce personal injuries.
Avoid accidental starting. Ensure the
switch is in the off-position before
plugging in.
finger on the switch or plugging in power
tools that have the switch on invites
accidents.
Remove any adjusting key or wrench
before turning the power tool on.
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.
better 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.
related hazards.
Safety equipment such as dust
Carrying power tools with your
Use of these devices can reduce dust-
A moment of
A wrench
This enables
-2-
BM 1609929H54 08-06 8/3/06 11:44 AM Page 3
Keep handles dry, clean and free from oil
and grease.
control the power tool.
Slippery hands cannot safely
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.
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.
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 tools operation.
If damaged, have the power tool repaired
before use.
poorly maintained power tools.
Many accidents are caused by
Any power tool
Such preventive safety
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
i
nstructions and in the manner intended
for the particular type of power tool,
taking into account the working
conditions and the work to be performed.
Use of the power tool for operations different
from those intended could result in a
hazardous situation.
Use clamps or other practical way to
secure and support the workpiece to a
stable platform.
or against your body is unstable and may
lead to loss of control.
Holding the work by hand
Service
Have your power tool serviced by a
qualified repair person using only identical
replacement parts.
safety of the power tool is maintained.
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.
gasoline, carbon tetrachloride, ammonia, etc.
may damage plastic parts.
Certain cleaning agents such as
This will ensure that the
SAVE THESE INSTRUCTIONS
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
A guard protects operator from
Wheels and other accessories running
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.
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
Contact with a “live” wire
-3-
BM 1609929H54 08-06 8/3/06 11:44 AM Page 4
grinder, resulting in possible serious personal
injury.
Before using a grinder or installing a new
w
heel, inspect the grinding wheel for
c
hips 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.
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
burst 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.
Regularly clean the tool’s air vents by
compressed air.
powdered metal inside the motor housing
may cause electrical failures.
This can cause loss of control
Wheels intended for
Face shield or at least
If you lose control and
Excessive accumulation of
Wheels with
Depressed
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
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.
extend 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 chemicallytreated 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.
Sparks from the wheel could
The grinding wheel guard
Larger sanding disc will
A suitable breathing respirator
Small particles and
Some dust created by
power sanding, sawing,
-4-
A
0
A
A
0
A
BM 1609929H54 08-06 8/3/06 11:44 AM Page 5
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 Name Designation/Explanation
V Volts Voltage (potential)
A Amperes Current
Hz Hertz Frequency (cycles per second)
W Watt Power
kg Kilograms Weight
min
s Seconds Time
n
.../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
Minutes Time
Diameter Size of drill bits, grinding wheels, etc.
No load speed Rotational speed, at no load
0
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.
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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
SPINDLE LOCK
MOUNTING
FLANGE
SPINDLE
Such preventive safety
PADDLE
SWITCH
VENTILATION
OPENINGS
VIBRATION CONTROL
SIDE HANDLE
GUARD
RELEASE / LOCK
LATCH
BUMPS
Model number 1873-8 & 1873-8F 1873-6 1893-6 & 1894-6
No load speed n08,500/min n06,000/min n06,000/min
Spindle thread 5/8"-11 UNC 5/8"-11 UNC 5/8"-11 UNC
Max. grinding wheel (Type 27) *7" Dia. *7" Dia. *9" Dia.
Max. flared cup wheel (Type 11) 4" Dia. 5” Dia. 5" Dia.
Max. wire wheel 4-1/2" Dia. 6" Dia. 6" Dia.
Max. wire cup brush
Max. sanding disc 7" Dia. 7" Dia. 9" Dia.
7" Dia. 6" Dia. 6" Dia.
NOTE: For tool specifications refer to
WHEEL GUARD
* Always use appropriate size wheel guard.
the nameplate on your tool.
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Grinder Assembly
WHEEL GUARD INSTALLATION
U
WARNING
!
se wheel guard with disc
grinding wheels. Always
close the latch to secure the guard. Keep the
guard between you and the wheel. Do not
direct guard opening toward your body.
The position of the guard can be adjusted to
accommodate the operation being performed.
To attach wheel guard DISCONNECT tool
from power source.
Open guard release/lock latch and position
guard on spindle neck so that the two bumps
on guard, line up with the two notches on the
spindle neck.
Rotate guard either direction to desired
position, and close latch to secure guard in
place.
TO REMOVE GUARD: Open guard
release/lock latch, rotate guard until the two
bumps on guard line up with the two notches
on the spindle neck, and lift guard off the
spindle neck.
LOCK NUT AND BACKING FLANGE
Your tool is equipped with a threaded spindle
for mounting accessories. Always use the
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.
When using spin-on grinding wheels, thread
d
irectly onto the spindle.
When using mounting wheels, thread
BACKING FLANGE onto spindle, then place
GRINDING WHEEL on the spindle. Thread
on the lock nut and tighten nut using a lock
nut wrench provided with adapter kit, while
holding the spindle lock in.
TO REMOVE: Reverse procedure.
CUP GRINDING WHEELS
Use cup grinding wheels for heavy-duty stock
removal of metals, concrete and stone.
ADJUSTABLE CUP
WHEEL GUARD INSTALLATION
Open the guard clamp and fit it on the
mounting flange then secure by tightening
the clamp screw. ALWAYS HAVE THIS
GUARD ATTACHED WHEN USING CUP
GRINDING WHEELS
The adjustable guard allows you to lower or
raise the guard’s shell. TO ADJUST: Loosen
the four bolts on the shell, and secure the
shell for 1/4” wheel exposure for maximum
safety.
ATTACHING CUP GRINDING WHEEL
Thread the cup grinding wheel on the spindle
shaft CLOCKWISE. Press in the spindle lock
button and turn the cup grinding wheel until
the lock button engages, then tighten the
wheel securely by hand.
TO REMOVE: Reverse procedure.
MOUNTING
FLANGE
SPINDLE
GUARD
RELEASE / LOCK
LATCH
SPIN-ON
GRINDING
WHEEL
BUMPS
WHEEL
GUARD
BACKING
FLANGE
DISC
GRINDING
WHEEL
LOCK NUT
SPINDLE
MOUNTING
FLANGE
ADJUSTABLE
GUARD
SHELL
BOLT
CUP
GRINDING
WHEEL
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MOUNTING TYPE 28 OR TYPE 29
GRINDING WHEELS
WARNING
!
To reduce the risk of injury,
do not use the flange set
provided with your tool for mounting type
28 or type 29 grinding wheels.
The flanges
provided with your tool are not designed for
mounting these wheels.
SMALL FLANGE SET PART NO. 1 607 000 380
FLANGE WITH SHOULDER
FIG. 2
FLANGE WITH SHOULDER
SPINDLE
Only use small flange set (available as
accessory) when mounting type 28 or type 29
wheels (Fig. 1).
Refer to figures 2 or 3 for proper wheel
assembly when using the small flange set.
FIG. 1
FLANGE OR LOCK NUT
TYPE 28
GRINDING WHEEL
FIG. 3
SPINDLE
FLANGE WITH SHOULDER
FLANGE OR LOCK NUT
FLANGE OR LOCK NUT
TYPE 29
GRINDING
WHEEL
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BM 1609929H54 08-06 8/3/06 11:44 AM Page 9
Sander 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 assembling wire brush to this tool,
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”.
Before attaching a backing
pad be sure its maximum
Wheel guard may not be
used for most sanding
SANDING DISC
SANDING DISC
WIRE BRUSH ASSEMBLY
WIRE
SIDE HANDLE
Always use auxiliary
handle for maximum
RUBBER
BACKING
PAD
SANDING
DISC
LOCK NUT
The side handle used to guide and balance
the tool can be threaded into the front housing
on either side, and on top of the tool,
depending on personal preference and
comfort. Use the side handle for safe control
and ease of operation.
WARNING
!
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.
SPINDLE LOCK
SPINDLE
SPIN-ON
BRUSH
Operating Instructions
"TRI-CONTROL" PADDLE SWITCH
The “Tri-Control” Paddle Switch enables the
operator to control the switch functions of
"Lock-OFF", "ON/OFF" and "Lock-ON".
TO UNLOCK SWITCH
AND TURN TOOL "ON":
Push paddle lever
FORWARD (toward the
spindle) then squeeze
the paddle lever.
TO SWITCH TOOL "OFF": Release pressure
on paddle lever. The switch is spring loaded
and will return to "OFF" position
automatically.
The "Lock-ON" feature, incorporated into the
paddle switch, is a convenience for long
operations.
TO LOCK SWITCH "ON": After paddle switch
has been activated push paddle lever
completely FORWARD and release paddle
lever.
TO SWITCH TOOL "OFF": Squeeze and
then release paddle lever. The switch is
spring loaded and will return to "OFF"
position automatically.
WARNING
!
torque from the motor can cause the tool to
twist.
Hold the tool with both hands
while starting the tool, since
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BM 1609929H54 08-06 8/3/06 11:44 AM Page 10
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
MOTOR HOUSING RELEASE LEVER
Your tool is equipped with a motor housing
release lever that will allow you to rotate the
spindle in either direction 90˚. To use this
feature, pull release lever in direction of
arrow to release housing, and rotate housing
until it clicks into place.
(Model 1894-6 only)
Grinding Operations
SELECTING GRINDING WHEELS
WARNING
!
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 maximum
DISC GRINDING WHEELS
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
!
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.
GRINDING TIPS
Excessive or sudden pressure on the wheel will slow
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.
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.
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BM 1609929H54 08-06 8/3/06 11:44 AM Page 11
peration:Refinishing painted wood or metal surfaces.
O
EMARKS GRIT
R
o remove paint and to smooth Coarse
T
urface irregularities. 16-24-30
s
To smooth Medium
he rough sanding. 36-50-80
t
o remove scratches left by Fine
T
previous discs. 100-120
To smooth surfaces for painting, Very Fine
olishing or waxing. 150-180
p
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.
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
gouging 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.
R
emove 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.
SANDING WOOD
When sanding wood the direction of the disc
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.
SANDING METAL
When sanding automobiles or appliances,
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.
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.
WARNING
!
cially when working corners, sharp edges
etc. This can cause loss of control and
kickback.
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
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
Avoid bouncing and snagging the wire brush, espe-
BRUSHING PRESSURE
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.
CORRECT: Wire tips doing the work.
INCORRECT: Excessive pressure can cause wire breakage.
-11-
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