Bosch ROS10, R0S20VS User Manual
BM 2609140467 08-07 8/28/07 8:54 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
ROS10
ROS20VS
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For English Version
See page 2 Voir page 13 Ver la página 24
Version française Versión en español
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General Safety Rules
WARNING
!
a
ll of the warnings listed below refers to your mains-operated (corded) power tool or battery-
o
perated (cordless) power tool.
Read all instructions. Failure to follow all instructions listed below may
result in electric shock, fire and/or serious injury.
The 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-
-2-
A moment of
A wrench
This enables
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Keep handles dry, clean and free from oil
and grease.
c
ontrol 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.
T
he 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.
Keep cutting tools sharp and clean.
Properly maintained cutting tools with sharp
Many accidents are caused by
Any power tool
Such preventive safety
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 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.
Risk of injury to user, power cord must only be
serviced by a Bosch Factory Service Center
or Authorized Bosch Service Station.
Certain cleaning agents such as
This will ensure that the
SAVE THESE INSTRUCTIONS
Safety Rules for Random Orbital Sanders
Hold power tools by insulated gripping
surfaces when performing an operation
where the cutting tool may contact hidden
wiring or it own cord.
wire will make exposed metal parts of the tool
"live" and shock the operator.
Unplug the sander before changing
accessories.
if sander is plugged in while changing an
accessory.
Accidental start-ups may occur
Contact with a "live"
If your tool is equipped with a dust bag,
empty it frequently and after completion
of sanding.
disposal, materials in fine particle form may
be explosive. Do not throw sanding dust on
an open fire. Spontaneous combustion, may
in time, result from mixture of oil or water
with dust particles.
Always wear eye protection and a dust
mask for dusty applications and when
Be extremely careful of dust
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sanding overhead. Sanding particles can be
absorbed by your eyes and inhaled easily
and may cause health complications.
Do not wet sand with this sander. Liquids
entering the motor housing is an electrical
shock hazard.
Do not use PSA pad on random orbit
sanders whose speed exceeds
12,000/min.
operating speed of pad may cause pad to
rupture or fly apart during use striking user or
bystanders.
Do not use sandpaper intended for larger
sanding pads.
beyond the sanding pad causing snagging,
tearing of the paper or kick-back. Extra paper
extending beyond the sanding pad can also
cause serious lacerations.
Clamp or secure workpiece when
sanding.
it from being ejected from under the sander
and leaves both hands to control the tool.
Keep the cord away from the spinning
pad and sandpaper.
entangled with the pad.
Exceeding the maximum
Larger sandpaper will extend
Clamping the workpiece prevents
The cord can become
!
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.
Some dust created by
power sanding, sawing,
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0
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Symbols
IMPORTANT: Some of the following symbols may be used on your tool. Please study them
and learn their meaning. Proper interpretation of these symbols will allow you to operate the
tool better and safer.
Symbol 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
.../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
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 to
Canadian Standards by
Underwriters Laboratories.
This symbol
designates
that
this tool
complies
to NOM
Mexican
Standards.
This symbol designates
that this tool is listed by
the Canadian Standards
Association.
This symbol designates that
this tool is listed by
Underwriters Laboratories,
and listed to Canadian
Standards by Underwriters
Laboratories.
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Functional Description and Specifications
!
WARNING
measures reduce the risk of starting the tool accidentally.
Disconnect the plug from the power source before making any
assembly, adjustments or changing accessories
Random Orbit Sander
FIG. 1
RUBBERIZED GRIP
ROCKER
“ON/OFF”
SWITCH
RUBBERIZED
GRIP
. Such preventive safety
VARIABLE SPEED DIAL
(Model ROS20VS only)
CORD
MICROFILTER
DUST CANISTER
LID
MICROFILTER
DUST CANISTER
BACKING
PAD
VENTILATION OPENINGS
ABRASIVE DISC
MAXIMUM CAPACITIES
Pad diameter 5" (125 mm)
Abrasive diameter
NOTE: For tool specifications refer to the nameplate on your tool.
5" (125 mm)
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Assembly
BACKING PAD INSTALLATION
The random orbit sander is equipped with a
backing pad of soft hardness, which is suitable
for general service. Hard and extra-soft pads
are available for other purposes, and in
general are used as follows;
Extra soft pad - Polishing or sanding large or
curved surfaces.
Soft pad - All purpose general sanding and
polishing.
Hard pad - Heavy sanding on flat surfaces,
especially with coarser abrasives.
To change backing pad, hold pad firmly and
remove the four screws that secure the
backing pad and remove old pad. Align new
pad over locating pins on drive spindle, replace
screws and securely tighten. Damaged or
worn backing pads must be replaced
immediately (Fig. 2).
FIG. 2
BACKING
PAD
LOCATING
PINS
SCREW
INSTALLING ACCESSORIES
The random orbit sander uses hook-and-loop
backed accessories, which firmly grip the pad
when applied with moderate pressure. To
change the accessory, merely peel off the old
accessory, remove dust from the pad if
necessary, and press the new accessory in
place (Fig. 3). Be sure to align the sanding
disc holes with the holes in the backing pad to
allow the dust extraction system to function.
After considerable service the pad surface will
become worn, and the pad must be replaced
when it no longer offers a firm grip. If you are
experiencing premature wearout of the pad
hooks, it may be due to pressure being applied
to the tool during operation.
FIG. 3
ABRASIVE
DISC
BACKING
PAD
PSA BACKING PAD ACCESSORIES
The optional RS036 soft PSA backing pad can
be used with PSA backed accessories with
pressure sensitive adhesive.
To change accessory, peel protective sheet
from the back of accessory. Align accessory
with backing pad and press firmly in place. To
remove, lift an edge of accessory with your
finger nail and peel it off the backing pad.
NOTE: Do not store tool with sanding disc on
pad, as sanding creates heat which increases
the adhesive bond. If the disc is left in place it
may become very difficult to remove.
SANDING DISC ALIGNMENT POSTS
The optional carrying case is equipped with
alignment posts that will allow you to easily
align the holes in the sanding disc, with the
holes in the backing pad. Place the sanding
disc onto the alignment posts with the Velcro
facing up (Fig. 4). Align holes on backing pad
with alignment posts and firmly tool push
downward.
FIG. 4
ALIGNMENT
POSTS
CARRYING CASE
ABRASIVE
DISC
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Your tool is equipped with an integrated
BACKING PAD DAMPER
backing pad damper ring. This damper
reduces the no-load speed, which helps
prevent swirl marks on the workpiece surface
and provides uniform finishing.
NOTE: If you notice steadily increasing noload speed, this indicates that the damper ring
is worn and needs to be replaced.
To replace damper ring, remove backing pad
as described in “Backing Pad Installation” and
remove worn damper ring by pulling firmly out
of locating groove. Loosen the two screws on
shroud just enough so you can separate
shroud approximately 1/4 inch. Align locating
bumps on damper ring with cut outs in shroud
and depress ring with thumbs until shroud
seats into groove completely around ring, then
tighten screws (Fig. 5).
Dust Collection
MICROFILTER DUST CANISTER
The integral dust extraction system collects
sanding dust in canister supplied with your
sander. For maximum efficiency, the dust
canister should be emptied frequently during
operation.
WARNING
!
frequently, after completion of sanding and
before storing the sander.
careful of dust disposal, materials in fine
particle form may be explosive. Do not throw
sanding dust on an open fire. Combustion from
FIG. 6
Your tool is equipped with
a dust canister, empty it
Be extremely
IMPORTANT: Ring should not have bends or
ripples when correctly seated.
FIG. 5
BACKING
PAD
DAMPER
RING
SHROUD
LOCATING BUMPS
ON UNDERSIDE OF
DAMPER RING
mixture of varnishes, lacquers, polyurethane,
oil or water with dust particles can occur if
there is a static discharge, spark introduced in
the box, or excessive heat.
REMOVING AND INSTALLING
DUST CANISTER
To remove dust canister:
Twist the canister
left or right and simply pull away from the tool
(Fig. 6).
To install dust canister: align dust port with
hole in canister and push canister onto tool
until it locks into place (Fig. 7).
FIG. 7
MICROFILTER
DUST CANISTER
1
DUST PORT
2
MICROFILTER
DUST CANISTER
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CLEANING AND EMPTYING THE
DUST CANISTER
Before opening the dust canister lid, it is
r
ecommended to loosen dust from the
microfilter dust canister by gently striking it
against a solid surface (Fig. 8).
To empty canister, hold canister and maintain
a firm grip. Firmly push upward on tab on
corner of lid, and remove from canister (Fig. 9).
Knock excess dust out of the microfilter, or
remove dust with your fingers or a soft brush.
You may notice that all the dust may not come
out of the canister. This will not affect sanding
performance but will reduce dust collection
efficiency.
FIG. 8
NOTE: Do not wash the micro filter with soap
and water. Dust may become more firmly
lodged in the pores, which will reduce dust
c
ollection, and damage the micro filter.
ATTACHING VACUUM HOSE
When the canister is removed from the tool, an
(optional) vacuum hose accessory can be
attached to the dust port. To use this feature,
attach vacuum hose (optional accessory) to
dust port, then connect opposite end of the
vacuum hose to a shop vacuum cleaner. A
vacuum hose adapter is included for
connection of this tool to a 1-1/4" or 1-1/2"
vacuum hose (Fig. 10).
MICROFILTER
DUST CANISTER LID
FIG. 9
FIG. 10
BOSCH
19MM HOSE
DUST
PORT
1-1/4”
OR
1-1/2” HOSE
VAC002
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Operating Instructions
ROCKER “ON/OFF” SWITCH
TO TURN THE TOOL "ON" depress the
u
pper portion of the dust-protected switch to
the number “I” position.
TO TURN THE TOOL "OFF": depress the
lower portion of the switch to the number “0”
position (Fig. 1).
VARIABLE SPEED WITH DIAL SETTING
(Model ROS20VS only)
Your sander is also equipped with a variable
speed dial (Fig. 1). The sander's orbital pad
speed can be preset from zero to maximum
nameplate OPM by rotating the dial in the
housing. The dial may be set on or between
any of six positions (1=low through 6=high).
The following table may be used as a general
guide for abrasive and backing pad selection,
but the best results will be obtained by sanding
a test sample of the workpiece first.
Your sander was designed to sand in small or
confined areas. Its small size and light weight
makes it ideal for overhead work.
You may grip the tool on top or around the
motor housing as shown, which was contoured
for that purpose (Fig. 11).
Material setting pad size
Switch Backing Grit
rough/finish rough/finish
woods:
softwoods 4 / 6 extra soft 60 / 240
hardwoods 4 / 6 soft 60 / 180
veneers 4 soft 240 / 320
metals:
steel 4 soft 60 / 240
stainless 4 soft 120 / 240
aluminum 4/ 6 soft 80 / 240
rust spots 6 extra soft 60 / 120
paintwork:
sanding 2 / 3 soft 180 / 400
scratches 4 / 6 hard 120 / 240
stripping 4 soft 40/60 /80
FIG. 11
Tool Tips
SELECTING SANDING DISCS
Open-coat aluminum oxide sanding discs are
recommended for most wood or metal sanding
applications, as this synthetic material cuts
quickly and wears well. Some applications,
such as plastics, glass, or stone require silicon
carbide discs, which have a very sharp cutting
edge. For best results, use Bosch sanding
and polishing accessories, which are of
superior quality and are carefully selected to
produce professional quality results with your
sander.
With the workpiece firmly secured, place the
START OF SANDING
pad on the work surface, then switch the tool
on. DO NOT apply excessive pressure as this
will slow the pad action, and DO NOT start the
tool and bring it up to speed before applying to
the work; swirl marks will result in either case.
SANDING ACTION
In general, higher speeds will give the best
results. If faster removal is desired, DO NOT
APPLY PRESSURE ON THE TOOL; use a
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coarser grade of abrasive. Move the sander in
long sweeping strokes, parallel to the grain
using some lateral motion to overlap the
strokes by as much as 75%. The random orbit
action allows cross-grain sanding, but be
c
areful not to tilt the sander near edges, or
undesirable rounding may result.
If the surface is rough, begin with coarser grits
and then complete the surfacing with medium
and fine abrasives. Because the random orbit
action is so effective, it is often possible to
begin sanding with a medium grit disc and go
directly to fine finishing. To avoid uneven
results, do not skip more than one grit size
when going from coarser to finer, and do not
sand in one area for too long.
To help prevent swirl marks when the job is
completed, gently lift the tool from the work
surface, then switch the tool off.
For most polishing, the soft backing pad will
give the best results. The random orbit
sander may be fitted with an optional foam
buffing pad or polishing bonnet to polish or
remove scratches from painted or finished
surfaces, plastics, and even glass. The tool is
operated in much the same way as when
SANDING SEQUENCE
REMOVAL OF SANDER
POLISHING
sanding, but the following points should be
observed;
Apply the compound to the surface, and use
t
he sponge applicator pad with light pressure
a
nd a circular motion to remove scratches and
restore weathered finishes. Use only as much
compound as necessary, and clean the
sponge frequently during use.
When initial polishing is completed, wipe away
any excess compound with a soft towel, and
then polish the surface to its final finish with the
polishing bonnet. Use smooth overlapping
strokes for best results.
It is important to note that the orbit speed of
the random orbit sander is not the same as the
RPM of a standard right-angle polisher. The
random orbit action is much like a powerful
hand polishing action, and therefore does not
have the high speeds at the edge of the pad
which can burn the work surface. For this
reason, it is possible to select a higher OPM
for the random orbit sander than the
recommended RPM for a standard polisher.
Practice on a hidden area or test surface until
you have determined the tool is suitable for
your polishing application.
Clean the buffing pad and polishing bonnet
with mild detergents and warm water. DO
NOT use solvents.
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