BOSCH 12555VSR User Manual
BM 1609929J30 10-05 10/5/05 8:16 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
11253VSR
11255VSR
Call Toll Free
for Consumer Information
& Service Locations
1-877-BOSCH99 (1-877-267-2499) www.boschtools.com
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BM 1609929J30 10-05 10/5/05 8:16 AM Page 2
General Safety Rules
R
WARNING
!
all of the warnings listed below refers to your mains-operated (corded) power tool or batteryoperated (cordless) power tool.
ead 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.
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
Loose clothes, jewelry or long hair can
Use of these devices can reduce dust-
A moment of
A wrench
This enables
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BM 1609929J30 10-05 10/5/05 8:16 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
Rotary Hammer Safety Rules
Hold tools by insulated gripping surfaces
when performing an operation where the
cutting tool may contact hidden wiring or
its own cord.
make exposed metal parts of the tool "live" and
shock the operator.
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.
Do not drill, fasten or break into existing walls
or other blind areas where electrical wiring may
exist. If this situation is unavoidable,
disconnect all fuses or circuit breakers feeding
this worksite.
Contact with a "live" wire will
Holding the work by hand
Wear ear protectors when using the tool for
extended periods.
high intensity noise can cause hearing loss.
Use a metal detector to determine if there
are gas or water pipes hidden in the work
area or call the local utility company for
assistance before beginning the operation.
Striking or cutting into a gas line will result in
explosion. Water entering an electrical device
may cause electrocution.
Always use the side handle for maximum
control over torque reaction or kick-back.
Never attempt to operate this tool with one
hand.
The slip clutch engages if you firmly
control the tool during a torque reaction or
kickback.
Prolonged exposure to
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Always wear safety goggles or eye
protection when using this tool. Use a dust
mask or respirator for applications which
generate dust.
protection will help deflect fragments of the
material that may be thrown toward your face
and eyes. Dust generated or gases released
f
rom the material you are cutting (i.e. asbestos
insulated pipes, radon) may cause respiratory
difficulties.
Use thick cushioned gloves and limit the
exposure time by taking frequent rest
periods.
action may be harmful to your hands and
arms.
Position the cord clear of rotating bit. Do
not wrap the cord around your arm or wrist.
If cord becomes entangled with the spinning bit
it could entrap you causing serious personal
injury.
Position yourself to avoid being caught
between the tool or side handle and walls
or posts.
jammed in the work, the reaction torque of
the tool could crush your hand or leg.
Do not strike the bit with a handheld
hammer or sledge hammer when
attempting to dislodge a bound or jammed
bit.
dislodge and strike you or bystanders.
Never place the tool down until the bit or
accessory have come to a complete stop.
Vibration caused by hammer-drill
Fragments of metal from the bit could
Safety goggles or eye
Should the bit become bound or
Do not use dull or damaged bits and
accessories.
greater tendency to bind in the workpiece.
When removing the bit from the tool avoid
contact with skin and use proper protective
gloves when grasping the bit or accessory.
Accessories may be hot after prolonged use.
Do not run the tool while carrying it at your
side.
The spinning drill bit may become
entangled with clothing and injury may result.
!
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.
Dull or damaged bits have a
Some dust created by
power sanding, sawing,
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A
0
A
A
0
A
BM 1609929J30 10-05 10/5/05 8:16 AM Page 5
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.
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Functional Description and Specifications
WARNING
!
Disconnect the plug from the power source before making any assembly,
adjustments or changing accessories.
reduce the risk of starting the tool accidentally.
Rotary Hammer
RELEASE BUTTON
SELECTOR DIAL
DEPTH GAUGE
RELEASE BUTTON
LOCKING
SLEEVE
DUST
SHIELD
DEPTH
GAUGE
RELEASE BUTTON
SELECTOR DIAL
DEPTH GAUGE
RELEASE BUTTON
SELECTOR DIAL
AUXILIARY HANDLE
HAND GRIP
FIG. 1
Such preventive safety measures
VENTILATION
O
PENINGS
REVERSING
SWITCH
LEVER
VARIABLE SPEED
TRIGGER SWITCH
REVERSING
SWITCH
LEVER
VARIABLE SPEED
TRIGGER SWITCH
VENTILATION
OPENINGS
LOCKING
SLEEVE
DUST
SHIELD
AUXILIARY HANDLE
DEPTH
GAUGE
HAND GRIP
Model number 11253VSR 11255VSR
Shank style
SDS-plus
SELECTOR DIAL
®
(Model 11255VSR only)
SDS-plus
Maximum Capacities:
Carbide tipped bits 1" 1"
Thin wall core bits 2-5/8" 2-5/8"
NOTE: For tool specifications refer to the nameplate on your tool.
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HAMMERHOOK
®
™
BM 1609929J30 10-05 10/5/05 8:16 AM Page 7
Operating Instructions
VARIABLE SPEED CONTROLLED
TRIGGER SWITCH
Your tool is equipped with a variable speed
trigger switch. The tool speed can be
c
ontrolled from the minimum to the maximum
nameplate RPM by the pressure you apply to
the trigger. Apply more pressure to increase
the speed and release pressure to decrease
speed. This accurate speed control enables
you to drill without center punching. It also
permits you to use as a power screwdriver.
Bits are available for driving screws as well
as running bolts and nuts.
REVERSING SWITCH LEVER
This tool is equipped with a rotating brush
reversing system. This results in longer brush
life while maximizing power in both forward and
reverse directions. The reverse switch can be
operated from either the right or left side of the
tool.
FOR FORWARD ROTATION: slide switch to
arrow marked forward (Fig. 1).
AUXILIARY HANDLE
The tool must be supported with the auxiliary
handle, which can be swiveled 360˚. To
reposition and/or swivel the handle, loosen
the hand grip, move the handle to the
desired position along the barrel and
securely retighten the hand grip (Fig. 2).
FIG. 2
FOR REVERSE ROTATION: slide the slide
switch to arrow marked reverse. NOTE: Tool
will not operate in middle position.
S
LIP CLUTCH
The tool has an internal preset clutch. The
clutch is set such that sufficient force is
transmitted to the bit for most drilling
conditions but it will slip when bit binds in the
hole or the tool is overloaded. Be aware that
due to required clutch setting, you may
experience a torque reaction an instant
before the clutch slips. This torque reaction
will twist the body of the rotary hammer in the
opposite direction as the bit rotates, i.e.,
counterclockwise. As clutch is slipping, the
bit will most likely stop rotating. When the
binding force on the bit is removed the clutch
automatically resets. If you experience bit
binding and clutch begins to slip, immediately
turn the tool "OFF" and correct the condition
leading to the bit binding.
DEPTH GAUGE
Your drilling depth can be pre-set and/or
repeated by using the depth gauge.
Setting depth: After the auxiliary handle is
installed, make sure the accessory has been
fully inserted into the tool holder before
setting the depth gauge (Fig. 3).
To adjust depth, push the depth gauge
release button, slide the depth gauge to
desired depth and release pressure on
button to lock the depth gauge in place.
HAND GRIP
DEPTH
GAUGE
FIG. 3
DEPTH
GAUGE
RELEASE
BUTTON
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The selector dial allows the tool to be set for
various drilling/hammer drilling applications.
Depress release button and turn selector dial
right or left depending on the below
applications.
When using demolition or chipping bits such as
bull points, chisels, spades, gouges, etc. the
“Hammer Only” mode must be selected.
CAUTION
!
complete stop.
chuck can cause damage to the tool.
Drilling only: Drilling/hammering: Vario-lock Hammering only:
used for drilling used for drilling allows for 36 desired used for light
wood, steel, etc. concrete positions of “hammer” chipping work
SELECTOR DIAL
Do not operate the selection
dial until the tool come to a
Shifting during rotation of the
SELECTOR DIAL - “VARIO-LOCK”
Adjusting the Vario-Lock: The vario-lock can
be set in any one of thirty-six (10˚
increments) positions. Choose a position
which is best suited for your operation.
Depress release button and turn the selector
dial, to the “vario-lock” setting. Next, rotate
the locking sleeve, along with the accessory,
to the desired position. Then turn the selector
dial to the “hammer only” setting and slightly
turn the locking sleeve to have it
automatically lock into a definite position.
FIG. 4
INSTALLING ACCESSORIES
WARNING
!
any assembly, adjustments or changing
accessories. Such preventive safety
measures reduce the risk of starting the tool
accidentally.
The 11253VSR and 11255VSR Rotary
Hammers utilize “SDS-plus” drill bits. The
“SDS-plus” system efficiently transfers drilling
torque and maximizes the energy delivered
per hammer blow.
Clean the insert shank end of the accessory
to remove any debris, then lightly grease with
a light oil or lubricant.
Insert accessory into the tool holder through
the dust shield, while twisting and pushing
Disconnect the plug from the
power source before making
inward until it locks automatically into place.
Pull outward on the accessory to be certain it
is locked into the tool holder (Fig. 5).
FIG. 5
DUST SHIELD
REMOVING ACCESSORIES
WARNING
!
skin and use proper protective gloves when
grasping the bit or accessory. Accessories
may be hot after prolonged use.
To remove an accessory, pull the locking
sleeve backwards (towards the rear of tool),
while pulling the accessory outward. All
accessories should be wiped clean after
removing (Fig. 6).
When removing the bit from
the tool avoid contact with
FIG. 6
LOCKING
SLEEVE
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HAMMERHOOK™(Model 11255VSR only)
Your tool is equipped with a convenient hook
for hanging your tool. To use, simply open
hook until it snaps into the open position
(Fig. 7).
When using the HAMMERHOOK™ always
b
e aware that the accessory is exposed.
Always hang the tool in an area where
yourself and bystandards can not accidently
make contact with the accessory.
WARNING
!
To reduce the risk of injury,
use care in selecting the
location for hanging the tool.
• Select a suitably sized and shaped object
that will provide adequate hanging stability.
An unstable hanging surface could result in
the tool unexpectedly falling.
• Insure that the tool is hung out of the way of
walkways and working areas with
bystanders. The tool could be bumped or a
bystander could become entangled in the
power supply cord causing the tool to
unexpectedly fall.
TOOL TIPS
Following a few simple tips will reduce wear
on the tool and the chance of injury to the
operator.
NOTE: The high efficiency available from
the rotary hammers can only be obtained if
sharp and undamaged accessories are used.
The “cost” to maintain sharp and undamaged
accessories is more than offset by the “time
saved” in operating the tool with sharp
accessories.
All hammers require a short period of time to
warm up. Depending on the room
temperature, this time may vary from
approximately 15 seconds (90˚F) to 2
minutes (32˚F). A new hammer requires a
break-in period before full performance is
realized. This period may require up to 5
hours of operation.
Carbide tipped bits: Used for drilling stone,
concrete, cement, brick, cinder block and
other unusually hard non-metals. The Rotary
Hammer is designed for “SDS” Carbide
Tipped Bits up to 3/4 inch diameter.
3 JAW CHUCK
The 3 Jaw Chuck with SDS Shank Adaptor
accessory can convert your tool for use with
straight shank bits.
WARNING
!
To reduce the risk of injury,
Do not use the hanging hook
if it appears damaged or deformed. This
could result in unstable hanging and the tool
unexpectedly falling.
To Close
To Open
HAMMERHOOK
™
When not in use, always
close hook until it snaps
into the closed position.
You will extend the life of your bits and do
neater work if you always put the bit in contact
with the workpiece BEFORE pulling the
trigger. During operation, hold the drill firmly
and exert moderate, steady pressure. Too
much pressure at low speed will stall the
hammer. Too little pressure will keep the bit
from cutting and cause excess friction by
sliding over the surface. This can be
damaging to the drill and bit.
Shanks of all drill bits should be wiped clean
prior to using and immediately after removing.
Recall these instructions for safe operation:
1. Some materials require slow drilling
speeds; whereas, others require higher speed
to produce the best results.
2. All work must be supported or secured
before drilling and steady, even pressure
applied in line with the drill bit.
As the drill bit cuts through the opposite
3.
side, reduce the pressure and continue
running the drill as the bit is withdrawn.
Materials such as glass, porcelain, ceramics,
tiles, plastics, etc., should be drilled at low
speeds with specially designed drill bits and
lubricants.
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FIG. 7
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DRILLING WOOD OR PLASTIC
If backing block is not used, ease up on the
pressure just before the bit breaks through
the wood to avoid splintering. Complete the
hole from the opposite side immediately after
the point breaks through. If bit binds, reverse
the drilling operation to help remove the bit
f
rom the work.
There are two rules for drilling hard materials.
First, the harder the material, the greater the
pressure you need to apply to the tool. Second,
the harder the material, the slower the speed.
Here are a couple of tips for drilling in metal.
Make a center punch in the material for
easier starting. Lubricate the tip of the bit
occasionally with cutting oil except when drilling
DRILLING METAL
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
soft metals such as aluminum, copper or cast
iron. If the hole to be drilled is fairly large, drill a
smaller hole first, then enlarge to the required
size, it’s often faster in the long run. Maintain
enough pressure to assure that the bit does not
just spin in the hole. This will dull the bit and
greatly shorten its life.
Use carbide-tipped masonry bit for cinder
block, mortar, common brick, soft stone and
other materials. The amount of pressure to
be used is dependent upon the type of
material being drilled. Soft materials require
less pressure while the hard materials need
more pressure to prevent the drill bit from
spinning.
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.
DRILLING MASONRY
Cleaning
WARNING
!
the power supply before cleaning or
performing any maintenance.
be cleaned most effectively with compressed
dry air.
Always wear safety goggles when
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.
CAUTION
!
plastic parts.
carbon tetrachloride, chlorinated cleaning
solvents, ammonia and household
detergents that contain ammonia.
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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