Bosch GKS 55 manual

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  • Brand: Bosch
  • Product: Saw
  • Model/name: GKS 55
  • Filetype: PDF
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Table of Contents

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GKS 55 GCE
Professional
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Bosch Power Tools 2 609 932 800 | (5.7.11)
Deutschland
Robert Bosch GmbH
Servicezentrum Elektrowerkzeuge
Zur Luhne 2
37589 Kalefeld – Willershausen
Tel. Kundendienst: +49 (1805) 70 74 10*
Fax: +49 (1805) 70 74 11*
(*Festnetzpreis 14 ct/min, höchstens 42 ct/min aus Mobil-
funknetzen)
E-Mail: Servicezentrum.Elektrowerkzeuge@de.bosch.com
Tel. Kundenberatung: +49 (1803) 33 57 99
(Festnetzpreis 9 ct/min, höchstens 42 ct/min aus Mobilfunk-
netzen)
Fax: +49 (711) 7 58 19 30
E-Mail: kundenberatung.ew@de.bosch.com
Österreich
Tel.: +43 (01) 7 97 22 20 10
Fax: +43 (01) 7 97 22 20 11
E-Mail: service.elektrowerkzeuge@at.bosch.com
Schweiz
Tel.: +41 (044) 8 47 15 11
Fax: +41 (044) 8 47 15 51
Luxemburg
Tel.: +32 (070) 22 55 65
Fax: +32 (070) 22 55 75
E-Mail: outillage.gereedschap@be.bosch.com
Entsorgung
Elektrowerkzeuge, Zubehör und Verpackungen sollen einer
umweltgerechten Wiederverwertung zugeführt werden.
Werfen Sie Elektrowerkzeuge nicht in den Hausmüll!
Nur für EU-Länder:
Gemäß der Europäischen Richtlinie
2002/96/EG über Elektro- und Elektronik-
AltgeräteundihrerUmsetzunginnationales
Recht müssen nicht mehr gebrauchsfähige
Elektrowerkzeuge getrennt gesammelt und
einer umweltgerechten Wiederverwertung
zugeführt werden.
Änderungen vorbehalten.
English
Safety Notes
General Power Tool Safety Warnings
Read all safety warnings and all in-
structions.Failuretofollowthewarnings
and instructions may result in electric shock, fire and/or seri-
ous injury.
Save all warnings and instructions for future reference.
The term “power tool” in the warnings refers to your mains-
operated(corded) power tool orbattery-operated(cordless)
power tool.
Work area safety
f Keepworkareacleanandwelllit.Clutteredordarkareas
invite accidents.
f Do not operate power tools in explosive atmospheres,
such as in the presence of flammable liquids, gases or
dust. Power tools create sparks which may ignite the dust
or fumes.
f Keep children and bystanders away while operating a
power tool. Distractions can cause you to lose control.
Electrical safety
f Power tool plugs must match the outlet. Never modify
the plug in any way. Do not use any adapter plugs with
earthed (grounded) power tools. Unmodified plugs and
matching outlets will reduce risk of electric shock.
f Avoidbodycontactwithearthedorgroundedsurfaces,
such as pipes, radiators, ranges and refrigerators.
There is an increased risk of electric shock if your body is
earthed or grounded.
f Do not expose power tools to rain or wet conditions.
Waterenteringapowertoolwillincreasetheriskofelectric
shock.
f 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 and moving parts. Damaged
or entangled cords increase the risk of electric shock.
f When operating a power tool outdoors, use an exten-
sioncord suitablefor outdoor use. Useofa cord suitable
for outdoor use reduces the risk of electric shock.
f If operating a power tool in a damp location is unavoid-
able, use a residual current device (RCD) protected
supply. Use of an RCD reduces the risk of electric shock.
Personal safety
f Stay alert, watch what you are doing and use common
sensewhen operating apower tool.Do notuse apower
toolwhileyouaretiredor undertheinfluenceofdrugs,
alcohol or medication. A moment of inattention while op-
erating power tools may result in serious personal injury.
f Use personal protective equipment. Always wear eye
protection. Protective equipment such as dust mask,
non-skidsafetyshoes,hardhat,orhearingprotectionused
for appropriate conditions will reduce personal injuries.
f Prevent unintentional starting. Ensure the switch is in
the off-position before connecting to power source
and/or battery pack, picking up or carrying the tool.
Carrying power tools with your finger on the switch or en-
ergising power tools that have the switch on invites acci-
dents.
f Remove any adjusting key or wrench before turning
the power tool on. A wrench or a key left attached to a ro-
tating part of the power tool may result in personal injury.
f Do not overreach. Keep proper footing and balance at
all times. This enables better control of the power tool in
unexpected situations.
f Dress properly. Do not wear loose clothing or jewel-
lery. Keep your hair, clothing and gloves away from
movingparts. Loose clothes, jewellery or long hair can be
caught in moving parts.
WARNING
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2 609 932 800 | (5.7.11) Bosch Power Tools
f If devices are provided for the connection of dust ex-
traction and collection facilities, ensure these are con-
nected and properly used. Use of dust collection can re-
duce dust-related hazards.
Power tool use and care
f Donotforcethe powertool.Use thecorrectpower tool
for your application. The correct power tool will do the
job better and safer at the rate for which it was designed.
f Do not use the power tool if the switch does not turn it
on and off. Any power tool that cannot be controlled with
the switch is dangerous and must be repaired.
f Disconnect the plug from the power source and/or the
battery pack from the power tool before making any
adjustments, changing accessories, or storing power
tools. Such preventive safety measures reduce the risk of
starting the power tool accidentally.
f 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.
f Maintain power tools. Check for misalignment or bind-
ing of moving parts, breakage of parts and any other
condition thatmay affectthe powertool’s operation.If
damaged, have the power tool repaired before use.
Many accidents are caused by poorly maintained power
tools.
f Keepcuttingtoolssharpandclean. Properlymaintained
cuttingtoolswithsharpcuttingedgesarelesslikelytobind
and are easier to control.
f Use the power tool, accessories and tool bits etc. in ac-
cordance with these instructions, 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.
Service
f Haveyourpowertoolservicedbyaqualifiedrepairper-
son using only identical replacement parts. This will en-
sure that the safety of the power tool is maintained.
Safety Warnings for Circular Saws
Cutting procedures
f DANGER: Keep hands away from cutting area and the
blade. Keep your second hand on auxiliary handle, or
motor housing. If both hands are holding the saw, they
cannot be cut by the blade.
f Do not reach underneath the workpiece. The guard can-
not protect you from the blade below the workpiece.
f Adjust the cutting depth to the thickness of the work-
piece. Less than a full tooth of the blade teeth should be
visible below the workpiece.
f Neverholdpiecebeingcutinyourhandsoracrossyour
leg. Secure the workpiece to a stable platform. It is im-
portant to support the work properly to minimize body ex-
posure, blade binding, or loss of control.
f Hold the power tool by the insulated gripping surfaces
only, when performing an operation where the cutting
toolmay contact hiddenwiring or its owncord. Contact
with a “live” wire will also make exposed metal parts of the
power tool “live” and could give the operator an electric
shock.
f When ripping always use a rip fence or straight edge
guide. This improves the accuracy of cut and reduces the
chance of blade binding.
f Always use blades with correct size and shape (dia-
mond versus round) of arbour holes. Blades that do not
match the mounting hardware of the saw will run eccentri-
cally, causing loss of control.
f Never use damaged or incorrect blade washers or bolt.
The blade washers and bolt were specially designed for
your saw, for optimum performance and safety of opera-
tion.
f Kickback causes and related warnings
– Kickback is a sudden reaction to a pinched, bound or
misaligned saw blade, causing an uncontrolled saw to lift
up and out of the workpiece toward the operator;
– When the blade is pinched or bound tightly by the kerf
closing down, the blade stalls and the motor reaction
drives the unit rapidly back toward the operator;
– If the blade becomes twisted or misaligned in the cut,
the teeth at the back edge of the blade can dig into the top
surface of the wood causing the blade to climb out of the
kerf and jump back toward the operator.
Kickback is the result of saw misuse and/or incorrect oper-
ating procedures or conditions and can be avoided by tak-
ing proper precautions as given below.
f Maintain a firm grip with both hands on the saw and po-
sition your arms to resist kickback forces. Position
yourbodytoeithersideoftheblade,butnotinlinewith
the blade. Kickback could cause the saw to jump back-
wards, but kickback forces can be controlled by the opera-
tor, if proper precautions are taken.
f When blade is binding, or when interrupting a cut for
any reason, release the trigger and hold the saw mo-
tionless in the material until the blade comes to a com-
plete stop. Never attempt to remove the saw from the
work or pull the saw backward while the blade is in mo-
tion or kickback may occur. Investigate and take correc-
tive actions to eliminate the cause of blade binding.
f Whenrestartingasawintheworkpiece,centrethesaw
blade in the kerf and check that saw teeth are not en-
gaged into the material. If saw blade is binding, it may
walk up or kickback from the workpiece as the saw is re-
started.
f Support large panels to minimise the risk of blade
pinching and kickback. Large panels tend to sag under
their own weight. Supports must be placed under the pan-
el on both sides, near the line of cut and near the edge of
the panel.
f Do not use dull or damaged blades. Unsharpened or im-
properlysetbladesproducenarrowkerfcausingexcessive
friction, blade binding and kickback.
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Bosch Power Tools 2 609 932 800 | (5.7.11)
f Bladedepthandbeveladjustinglockingleversmustbe
tight and secure before making cut. If blade adjustment
shifts while cutting, it may cause binding and kickback.
f Use extra caution when sawing into existing walls or
other blind areas. The protruding blade may cut objects
that can cause kickback.
Lower guard function
f Check lower guard for proper closing before each use.
Do not operate the saw if lower guard does not move
freely and close instantly. Never clamp or tie the lower
guard into the open position. If saw is accidentally
dropped, lower guard may be bent. Raise the lower guard
with the retracting handle and make sure it moves freely
anddoesnottouchthebladeoranyotherpart,inallangles
and depths of cut.
f Check the operation of the lower guard spring. If the
guard and the spring are not operating properly, they
must be serviced before use. Lower guard may operate
sluggishly due to damaged parts, gummy deposits, or a
build-up of debris.
f Lower guard may be retracted manually only for spe-
cial cuts such as “plunge cuts” and “compound cuts”.
Raise lower guard by retracting handle and as soon as
blade enters the material, the lower guard must be re-
leased. For all other sawing, the lower guard should oper-
ate automatically.
f Always observe that the lower guard is covering the
bladebeforeplacingsawdownonbenchorfloor.Anun-
protected, coasting blade will cause the saw to walk back-
wards, cutting whatever is in itspath. Be aware of the time
it takes for the blade to stop after switch is released.
Additional safety warnings
f Donotreachintothesawdustejectorwithyourhands.
They could be injured by rotating parts.
f Do not work overhead with the saw. In this manner you
do not have sufficient control over the power tool.
f Use suitable detectors to determine if utility lines are
hiddenintheworkareaor callthelocalutilitycompany
for assistance. Contact with electric lines can lead to fire
and electric shock. Damaging a gas line can lead to explo-
sion. Penetrating a water line causes property damage or
may cause an electric shock.
f Do not operate the power tool stationary. It is not de-
signed for operation with a saw table.
f Donotusehighspeedsteel(HSS)sawblades.Suchsaw
blades can easily break.
f Do not saw ferrous metals. Red hot chips can ignite the
dust extraction.
f When working with the machine, always hold it firmly
with both hands and provide for a secure stance. The
power tool is guided more secure with both hands.
f Secure the workpiece. A workpiece clamped with clamp-
ing devices or in a vice is held more secure than by hand.
f Always wait until the machine has come to a complete
stop before placing it down. The tool insert can jam and
lead to loss of control over the power tool.
Products sold in GB only: Your product is fitted with a
BS 1363/A approved electric plug with internal fuse (ASTA
approved to BS 1362).
If the plug is not suitable for your socket outlets, it should be
cut off and an appropriate plug fitted in its place by an author-
ised customer service agent. The replacement plug should
have the same fuse rating as the original plug.
The severed plug must be disposed of to avoid a possible
shock hazard and should never be inserted into a mains sock-
et elsewhere.
ProductssoldinAUSandNZonly:Usearesidualcurrentde-
vice (RCD) with a rated residual current of 30 mA or less.
Product Description and Specifica-
tions
Read all safety warnings and all instruc-
tions. Failure to follow the warnings and in-
structions may result in electric shock, fire
and/or serious injury.
While reading the operating instructions, unfold the graphics
page for the machine and leave it open.
Intended Use
GKS 55:
The machine is intended for lengthways and crossways cut-
ting of wood with straight cutting lines as well as mitre cuts in
woodwhilerestingfirmlyontheworkpiece.Withsuitablesaw
blades, thin-walled non-ferrous metals, e. g., profiles, can al-
so be sawed.
Working ferrous metals is not permitted.
GKS 55 GCE:
The machine is intended for lengthways and crossways cut-
ting of wood with straight cutting lines as well as mitre cuts in
woodwhilerestingfirmlyontheworkpiece.Withsuitablesaw
blades, thin-walled non-ferrous metals, e. g., profiles, light
uilding materials and plastic can also be sawed.
Working ferrous metals is not permitted.
Product Features
The numbering of the product features refers to the illustra-
tion of the machine on the graphics page.
1 On/Off switch
2 Lock-off button for On/Off switch
3 Thumbwheel for speed preselection (GKS 55 GCE)
4 Auxiliary handle (insulated gripping surface)
5 Spindle lock button
6 Scale for mitre angle
7 Wing bolt for parallel guide
8 Wing bolt for bevel-angle preselection
9 Cutting mark, 0°
10 Cutting mark, 45°
11 Allen key
12 Parallel guide*
13 Retracting blade guard
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14 Lever for retracting blade guard
15 Base plate
16 Wing bolt for bevel-angle preselection
17 Sawdust ejector
18 Blade guard
19 Handle (insulated gripping surface)
20 Clamping bolt with washer
21 Clamping flange
22 Saw blade*
23 Mounting flange
24 Saw spindle
25 Extraction adapter*
26 Clamping lever for cutting-depth preselection
27 Cutting-depth scale
28 Set of screw clamps*
29 Guide rail*
30 Connection piece*
31 Vacuum hose*
*Accessories shown or described are not part of the standard de-
livery scope of the product. A complete overview of accessories
can be found in our accessories program.
Technical Data
Noise/Vibration Information
Measured sound values determined according to EN 60745.
Typically the A-weighted noise levels of the product are:
Sound pressure level 92 dB(A); Sound power level
103 dB(A). Uncertainty K =3 dB.
Wear hearing protection!
Vibration total values ah (triax vector sum) and uncertainty K
determined according to EN 60745:
Cutting wood: ah=2.5 m/s2
, K=1.5 m/s2
,
Cutting metal: ah=3.5 m/s2
, K=1.5 m/s2
.
The vibration emission level given in this information sheet
has been measured in accordance with a standardised test
given inEN60745 and maybe used to compare one toolwith
another. It may be used for a preliminary assessment of expo-
sure.
The declared vibration emission level represents the main ap-
plications of the tool. However if the tool is used for different
applications,withdifferentaccessoriesorpoorlymaintained,
the vibration emission may differ. This may significantly in-
crease the exposure level over the total working period.
An estimation of thelevelofexposuretovibrationshouldalso
take into account the times when the tool is switched off or
when it is running but not actually doing the job. This may sig-
nificantly reduce the exposure level over the total working pe-
riod.
Identify additional safety measures to protect the operator
fromtheeffectsofvibrationsuchas:maintainthetoolandthe
accessories, keep the hands warm, organisation of work pat-
terns.
Circular Saw GKS 55
Professional
GKS 55 GCE
Professional
Article number 3 601 F64 0.. 3 601 F64 9..
Rated power input W 1200 1350
No-load speed min-1
5200 2100 – 5100
Rotational speed under load, max. min-1
3800 4900
Cutting depth, max.
– for 0° bevel angle
– for 45° bevel angle
mm
mm
55
38.5
55
38.5
Spindle lock z z
Speed preselection – z
Constant electronic control – z
Reduced starting current – z
Base plate dimensions mm 145 x 290 199 x 300
Saw blade diameter, max. mm 160 160
Saw blade diameter, min. mm 150 150
Blade thickness, max. mm 1.8 1.8
Tooth thickness/setting, max. mm 2.6 2.6
Tooth thickness/setting, min. mm 1.8 1.8
Mounting bore mm 20 20
Weight according to EPTA-Procedure 01/2003 kg 3.5 3.9
Protection class / II / II
The values given are valid for a nominal voltage [U] of 230 V. For different voltages and models for specific countries, these values can vary.
Please observe the article number on the type plate of your machine. The trade names of the individual machines may vary.
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Bosch Power Tools 2 609 932 800 | (5.7.11)
Declaration of Conformity
We declare under our sole responsibility that the product de-
scribed under “Technical Data” is in conformity with the fol-
lowing standards or standardization documents: EN 60745
according to the provisions of the directives 2004/108/EC,
2006/42/EC.
Technical file (2006/42/EC) at:
Robert Bosch GmbH, PT/ESC,
D-70745 Leinfelden-Echterdingen
Robert Bosch GmbH, Power Tools Division
D-70745 Leinfelden-Echterdingen
16.05.2011
Assembly
Mounting/Replacing the Saw Blade
f Before any work on the machine itself, pull the mains
plug.
f Whenmountingthesawblade,wearprotectivegloves.
Danger of injury when touching the saw blade.
f Only use saw blades that correspond with the charac-
teristic data given in the operating instructions.
f Do not under any circumstances use grinding discs as
the cutting tool.
Selecting a Saw Blade
An overview of recommended saw blades can be found at the
end of this manual.
Removal of the Saw Blade (see figure A)
For changing the cutting tool, it is best to place the machine
on the face side of the motor housing.
– Press the spindle lock button 5 and keep it pressed.
f The spindle lock button 5 may be actuated only when
the saw spindle is at a standstill. Otherwise, the power
tool can be damaged.
– With the Allen key 11, unscrew the clamping bolt 20 turn-
ing in rotation direction n.
– Tilt back the retracting blade guard 13 and hold firmly.
– Removetheclampingflange 21andthesawblade22from
the saw spindle 24.
Mounting the Saw Blade (see figure A)
For changing the cutting tool, it is best to place the machine
on the face side of the motor housing.
– Clean the sawblade 22and allclampingpartstobeassem-
bled.
– Tilt back the retracting blade guard 13 and hold firmly.
– Place the saw blade 22 on to the mounting flange 23. The
cutting direction of the teeth (direction or arrow on saw
blade) and the direction-of-rotation arrow on the blade
guard 18 must correspond.
– Mount the clamping flange 21 and screw in the clamping
bolt 20 turning in rotation direction o. Observe correct
mounting position of mounting flange 23 and clamping
flange 21.
– Press the spindle lock button 5 and keep it pressed.
– WiththeAllenkey11,tighten theclamping bolt20turning
in rotation direction o. The tightening torque is between
6–9 Nm, which corresponds to hand tight plus ¼ turn.
Dust/Chip Extraction
f Before any work on the machine itself, pull the mains
plug.
f Dusts from materials such as lead-containing coatings,
some wood types, minerals and metal can be harmful to
one’s health. Touching or breathing-in the dusts can cause
allergic reactions and/or lead to respiratory infections of
the user or bystanders.
Certain dusts, such as oak or beech dust, are considered
as carcinogenic, especially in connection with wood-treat-
ment additives (chromate, wood preservative). Materials
containing asbestos may only be worked by specialists.
– As far as possible, use a dust extraction system suita-
ble for the material.
– Provide for good ventilation of the working place.
– It is recommended to wear a P2 filter-class respirator.
Observe the relevant regulations in your country for the
materials to be worked.
f Prevent dust accumulation at the workplace. Dusts can
easily ignite.
Mounting the Extraction Adapter (see figure B)
Attachtheextractionadapter 25ontothe sawdustejector17
until it latches. A vacuum hose with a diameter of 35 mm can
be connected to the extraction adapter 25.
f The extraction adapter may not be mounted when no
external dust extraction is connected. Otherwisethe ex-
traction channel can become clogged.
f Do not connect a dust bag to the extraction adapter.
Otherwise the extraction system can become clogged.
To ensure optimum extraction, the extraction adapter 25
must be cleaned regularly.
External Dust Extraction
Connect the vacuum hose 31 to a vacuum cleaner (accesso-
ry). An overview for connecting to various vacuum cleaners
can be found at the end of this manual.
The machine can be plugged directly into the receptacle of a
Bosch all-purpose vacuum cleaner with remote starting con-
trol. The vacuum cleaner starts automatically when the ma-
chine is switched on.
The vacuum cleaner must be suitable for the material being
worked.
When vacuuming dry dust that is especially detrimental to
health or carcinogenic, use a special vacuum cleaner.
Dr. Egbert Schneider
Senior Vice President
Engineering
Dr. Eckerhard Strötgen
Head of Product
Certification
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2 609 932 800 | (5.7.11) Bosch Power Tools
Operation
Operating Modes
f Before any work on the machine itself, pull the mains
plug.
Adjusting the Cutting Depth (see figure C)
f Adjust the cutting depth to the thickness of the work-
piece. Less than a full tooth of the blade teeth should be
visible below the workpiece.
Loosen the clamping lever 26. For a smaller cutting depth,
pull the saw away from the base plate 15; for a larger cutting
depth, push the saw toward the base plate 15. Adjust the de-
sired cutting depth at the cutting-depth scale. Tighten the
clamping lever 26 again.
The tightening tension of the clamping lever 26 can be read-
justed. For this, unscrew the clamping lever 26, and screw it
backagain turned offset byatleast30°in anticlockwise direc-
tion.
Adjusting the Cutting Angle
It is best to place the machine on the face side of the blade
guard 18.
Loosen the wing bolts 8 and 16. Tilt the saw sidewards. Ad-
just the desired measure on the scale 6. Tighten the wing
bolts 8 and 16 again.
Note:Forbevelcuts,the cuttingdepthissmallerthantheset-
ting indicated on the cutting-depth scale 27.
Cutting Marks
The 0° cutting mark (9) indicates the position of the saw
blade for straight cuts. The 45° cutting mark (10) indicates
the position of the saw blade for 45° cuts without using the
guide rail.
Starting Operation
f Observecorrectmains voltage!Thevoltage of thepow-
er source must agree with the voltage specified on the
nameplate of the machine. Power tools marked with
230 V can also be operated with 220 V.
Switching On and Off
To start the machine, first push the lock-off button for the
On/Off switch2 and thenpresstheOn/Off switch 1andkeep
it pressed.
To switch off the machine, release the On/Off switch 1.
Note: For safety reasons, the On/Off switch 1 cannot be
locked; it must remain pressed during the entire operation.
Reduced starting current (GKS 55 GCE)
The electronic reduced starting current limits the power con-
sumption when switching the tool on and enables operation
from a 13 ampere fuse.
Constant Electronic Control (GKS 55 GCE)
Constant electronic control holds the speed constant at no-
load and under load, and ensures uniform working perform-
ance.
Speed preselection (GKS 55 GCE)
The required speed can be preselected with the thumbwheel
3 (also while running).
Therequiredspeeddependsonthesawbladebeingusedand
on the material being worked (see overview of saw blades at
the end of these operating instructions).
Working Advice
Protect saw blades against impact and shock.
Guide the machine evenly and with light feed in the cutting di-
rection.Excessivefeedsignificantlyreducestheservicelifeof
the saw blade and can cause damage to the power tool.
Sawing performance and cutting quality depend essentially
on the condition and the tooth form of the saw blade. There-
fore,useonlysharpsawbladesthataresuitedforthematerial
to be worked.
Sawing Wood
The correct selection of the saw blade depends on the type
and quality of the wood and whether lengthway or crossway
cuts are required.
When cutting spruce lengthways, long spiral chips are
formed.
Beech and oak dusts are especially detrimental to health.
Therefore, work only with dust extraction.
Sawing Plastic (GKS 55 GCE)
Note: When sawing plastic, especially PVC, long spiral chips
areformedthatcanbeelectrostaticallycharged.Thiscanclog
the sawdust ejector 17 and cause the retracting blade guard
13 to jam. It is best to work with dust extraction.
Guide the switched on power tool against the workpiece and
carefully start the cut. Continue the cut with low feed and
without interruption, so that the saw teeth do not gum up too
quickly.
Sawing Non-ferrous Metals
Note: Use only a sharp saw blade that is suitable for non-fer-
rousmetals.Thisensuresacleancutandpreventsbladebind-
ing.
Guide the switched on power tool against the workpiece and
carefully start the cut. Continue the cut with low feed and
without interruption.
When sawing profiles, always begin the cut from the narrow
side; when sawing U-profiles, never start the cut from the
open side. Support long profiles in order to avoid blade bind-
ing and kickback of the power tool.
Sawing Light Building Materials (Materials with Mineral
Content) (GKS 55 GCE)
f When sawing light building materials,observethe stat-
utory provisions and the recommendations of the ma-
terial suppliers.
Light building materials may only be sawn dry and when ap-
plying dust extraction. Always work with the guide rail 29 (ac-
cessory).
The vacuum cleaner must be approved for the extraction of
masonry dust. Bosch provides suitable vacuum cleaners.
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Page: 18
English | 19
Bosch Power Tools 2 609 932 800 | (5.7.11)
Sawing with Parallel Guide (see figure D)
The parallel guide 12 enables exact cuts along a workpiece
edge and cutting strips of the same dimension.
Loosen wing bolt7 and slide the scale of the parallel guide 12
throughtheguideinthe baseplate 15.Adjustthedesiredcut-
tingwidthasthescalesettingattherespectivecuttingmark9
or 10; see Section “Cutting Marks”. Tighten wing bolt 7 again.
Sawing with Auxiliary Guide (see figure E)
For sawing large workpieces or straight edges, a board or
strip can clamped to the workpiece as an auxiliary guide; the
baseplateofthecircularsawcanbeguidedalongsidetheaux-
iliary guide.
Sawing with Guide Rail (GKS 55 GCE) (see figure F–G)
The guide rail 29 is used to carry out straight cuts.
The rubber lip on the guide rail acts as a splinter guard; it pre-
vents fraying of the surface while sawing wooden materials.
For this, the teeth of the saw blade must face directly against
the rubber lip.
Prior to the very first cut, the rubber lip must be adapted with
theguiderail29tothecircularsawbeingused.Forthis,place
the guide rail 29 over its complete length on a workpiece. Ad-
justacuttingdepthofapprox.9 mmandthesawbladetoaze-
ro degree angle. Switch the circular saw on and guide it uni-
formly and with light feed in the cutting direction.
Two guide rails can be connected to one with use of the con-
nectionpiece30.Clampingiscarriedoutwiththefourscrews
located in the connection piece.
Maintenance and Service
Maintenance and Cleaning
f Before any work on the machine itself, pull the mains
plug.
f For safe and proper working, always keep the machine
and ventilation slots clean.
Theretractingbladeguardmustalwaysbeabletomovefreely
and retract automatically. Therefore, always keep the area
around the retracting blade guard clean. Remove dust and
chips by blowing out with compressed air or with a brush.
Saw blades that are not coated can be protected against cor-
rosionwithathincoatofacid-freeoil.Beforeuse,theoilmust
be removed again, otherwise the wood will become soiled.
Resin and glue residue on the saw blade produces poor cuts.
Therefore, clean the saw blade immediately after use.
If the machine should fail despite the care taken in manufac-
turingandtestingprocedures,repairshouldbecarriedoutby
an after-sales service centre for Bosch power tools.
Inallcorrespondenceandsparepartsorder,pleasealwaysin-
clude the 10-digit article number given on the type plate of
the machine.
After-sales Service and Customer Assistance
Our after-sales service responds to your questions concern-
ing maintenance and repair of your product as well as spare
parts. Exploded views and information on spare parts can al-
so be found under:
www.bosch-pt.com
Our customer service representatives can answer your ques-
tions concerning possible applications and adjustment of
products and accessories.
Great Britain
Robert Bosch Ltd. (B.S.C.)
P.O. Box 98
Broadwater Park
North Orbital Road
Denham
Uxbridge
UB 9 5HJ
Tel. Service: +44 (0844) 736 0109
Fax: +44 (0844) 736 0146
E-Mail: boschservicecentre@bosch.com
Ireland
Origo Ltd.
Unit 23 Magna Drive
Magna Business Park
City West
Dublin 24
Tel. Service: +353 (01) 4 66 67 00
Fax: +353 (01) 4 66 68 88
Australia, New Zealand and Pacific Islands
Robert Bosch Australia Pty. Ltd.
Power Tools
Locked Bag 66
Clayton South VIC 3169
Customer Contact Center
Inside Australia:
Phone: +61 (01300) 307 044
Fax: +61 (01300) 307 045
Inside New Zealand:
Phone: +64 (0800) 543 353
Fax: +64 (0800) 428 570
Outside AU and NZ:
Phone: +61 (03) 9541 5555
www.bosch.com.au
Republic of South Africa
Customer service
Hotline: +27 (011) 6 51 96 00
Gauteng – BSC Service Centre
35 Roper Street, New Centre
Johannesburg
Tel.: +27 (011) 4 93 93 75
Fax: +27 (011) 4 93 01 26
E-Mail: bsctools@icon.co.za
KZN – BSC Service Centre
Unit E, Almar Centre
143 Crompton Street
Pinetown
Tel.: +27 (031) 7 01 21 20
Fax: +27 (031) 7 01 24 46
E-Mail: bsc.dur@za.bosch.com
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Page: 211
2 609 932 800 | (5.7.11) Bosch Power Tools
212 |
GAS 25
GAS 50
GAS 50 M
Ø 35 mm
3 m 2 609 390 392
5 m 2 609 390 393
GAS 25
GAS 50
GAS 50 M
Ø 35 mm
3 m 2 607 002 163
5 m 2 607 002 164
1 600 Z00 005 (800 mm)
1 600 Z00 006 (1100 mm)
1 600 Z00 00F (1600 mm)
1 600 Z00 007 (2100 mm)
1 600 Z00 008 (3100 mm)
1 600 Z00 009
1 600 Z00 00B
1 608 190 007
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| 213
Bosch Power Tools 2 609 932 800 | (5.7.11)
CORIAN
VARIOCOR
1
2
3
4
5
6
CORIAN
VARIOCOR
6 6 4-6 3-5 2-4 1-2
OBJ_BUCH-244-006.book Page 213 Tuesday, July 5, 2011 7:44 AM

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