BOSCH GGS 18 V-LI Professional Cordless Straight Grinder Instruction Manual
- June 3, 2024
- Bosch
Table of Contents
BOSCH GGS 18 V-LI Professional Cordless Straight Grinder
Safety Notes
General Power Tool Safety Warnings
Read all safety warnings and all instructions. Failure to follow the warnings
and instructions may result in electric shock, fire and/or serious injury.
Save all warnings and instructions for future reference. The term “power tool”
in the warnings refers to your mains-operated (corded) power tool or battery-
operated (cordless) power tool.
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. Power tools create sparks which may ignite the dust or fumes.
- Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.
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. Unmodified plugs and matching outlets will reduce risk of electric shock.
- Avoid body contact with earthed or grounded surfaces, such as pipes, radiators, ranges and refrigerators. There is an increased risk of electric shock if your body is earthed or grounded.
- Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electricshock.
- 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.
- When operating a power tool outdoors, use an extension cord suitable for outdoor use. Use of a cord suitable for outdoor use reduces the risk of electric shock.
- If operating a power tool in a damp location is unavoidable, use a residual current device (RCD) protected supply. Use of an RCD reduces the risk of electric shock.
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. A moment of inattention while operating power tools may result in serious personal injury.
- Use personal protective equipment. Always wear eye protection. Protective equipment such as dust mask, non-skid safety shoes, hard hat, or hearing protection used for appropriate conditions will reduce personal injuries.
- 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 energizing power tools that have the switch on invites accidents.
- Remove any adjusting key or wrench before turning the power tool on. A wrench 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. This enables 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. Use of dust collection can reduce dust-related hazards.
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. Any power tool 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. Such preventive safety 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 tool’s operation. If damaged, have the power tool repaired before use. Many accidents are caused by poorly maintained power tools.
- 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 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.
Battery tool use and care
- Recharge only with the charger specified by the manufacturer. A charger that is suitable for one type of battery pack may create a risk of fire when used with another battery pack.
- Use power tools only with specifically designated battery packs. Use of any other battery packs may create a risk of injury and fire.
- When the battery pack is not in use, keep it away from other metal objects, like paper clips, coins, keys, nails, screws or other small metal objects, that can make a connection from one terminal to another. Shorting the battery terminals together may cause burns or a fire.
- Under abusive conditions, liquid may be ejected from the battery; avoid contact. If contact accidentally occurs, flush with water. If liquid contacts eyes, additionally seek medical help. Liquid ejected from the battery may cause irritation or burns.
Service
- Have your power tool serviced by a qualified repair person using only identical replacement parts. This will ensure that the safety of the power tool is maintained.
Safety Warnings for Straight Grinders
Safety Warnings Common for Grinding
- This power tool is intended to function as a grinder. Read all safety warnings, instructions, illustrations and specifications provided with this power tool. Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury.
- Operations such as sanding, wire brushing, polishing or cutting-off are not recommended to be performed with this power tool. Operations for which the power tool was not designed may create a hazard and cause personal injury.
- Do not use accessories which are not specifically designed and recommended by the tool manufacturer. Just because the accessory can be attached to your power tool, it does not assure safe operation.
- The rated speed of the accessory must be at least equal to the maximum speed marked on the power tool. Accessories running faster than their rated speed can break and fly apart.
- The outside diameter and the thickness of your accessory must be within the capacity rating of your power tool. Incorrectly sized accessories cannot be adequately guarded or controlled.
- The arbor size of wheels, flanges, backing pads or any other accessory must properly fit the spindle of the power tool. Accessories with arbor holes that do not match the mounting hardware of the power tool will run out of balance, vibrate excessively and may cause loss of control.
- Do not use a damaged accessory. Before each use inspect the accessory such as abrasive wheels for chips and cracks, backing pad for cracks, tear or excess wear, wire brush for loose or cracked wires. If power tool or accessory is dropped, inspect for damage or install an undamaged accessory. After inspecting and installing an accessory, position yourself and bystanders away from the plane of the rotating accessory and run the power tool at maximum no-load speed for one minute. Damaged accessories will normally break apart during this test time.
- Wear personal protective equipment. Depending on the application, use face shield, safety goggles or safety glasses. As appropriate, wear dust mask, hearing protectors, gloves and workshop apron capable of stopping small abrasive or workpiece fragments. The eye protection must be capable of stopping flying debris generated by various operations. The dust mask or respirator must be capable of filtrating particles generated by your operation. Prolonged exposure to high-intensity noise may cause hearing loss.
- Keep bystanders a safe distance away from the work area. Anyone entering the work area must wear personal protective equipment. Fragments of workpieces or of a broken accessory may fly away and cause injury beyond the immediate area of operation.
- Hold the power tool by insulated gripping surfaces only, when performing an operation where the cutting accessory may contact hidden wiring or its own cord. Cutting accessory contacting a “live” wire may make exposed metal parts of the power tool “live” and could give the operator an electric shock.
- Position the cord clear of the spinning accessory. If you lose control of the power tool, the cord may be cut or snagged and your hand or arm may be pulled into the spinning accessory.
- Never lay the power tool down until the accessory has come to a complete stop. The spinning accessory may grab the surface and pull the power tool out of your control.
- Do not run the power tool while carrying it at your side. Accidental contact with the spinning accessory could snag your clothing, pulling the accessory into your body.
- Regularly clean the power tool’s air vents. The motor’s fan will draw the dust inside the housing and excessive accumulation of powdered metal may cause electrical hazards.
- Do not operate the power tool near flammable materials. Sparks could ignite these materials.
- Do not use accessories that require liquid coolants. Using water or other liquid coolants may result in electrocution or shock.
Kickback and related warnings
- Kickback is a sudden reaction to a pinched or snagged rotating wheel, backing pad, brush or any other accessory. Pinching or snagging causes rapid stalling of the rotating accessory which in turn causes the uncontrolled power tool to be forced in the direction opposite of the accessory’s rotation at the point of the binding. For example, if an abrasive wheel is snagged or pinched by the workpiece, the edge of the wheel that is entering into the pinch point can dig into the surface of the material causing the wheel to climb out or kick out. The wheel may either jump toward or away from the operator, depending on direction of the wheel’s movement at the point of pinching. Abrasive wheels may also break under these conditions. Kickback is the result of power tool misuse and/or incorrect operating procedures or conditions and can be avoided by taking proper precautions as given below.
- Maintain a firm grip on the power tool and position your body and arm to allow you to resist kickback forces. Always use auxiliary handle, if provided, for maximum control over kickback or torque reaction during start-up. The operator can control torque reactions or kickback forces, if proper precautions are taken.
- Never place your hand near the rotating accessory. Accessory may kickback over your hand.
- Do not position your body in the area where power tool will move if kickback occurs. Kickback will propel the tool in direction opposite to the wheel’s movement at the point of snagging.
- Use special care when working corners, sharp edges, etc. Avoid bouncing and snagging the accessory. Corners, sharp edges or bouncing have a tendency to snag the rotating accessory and cause loss of control or kickback.
- Do not attach a saw chain woodcarving blade or toothed saw blade. Such blades create frequent kickback and loss of control over the power tool.
Additional safety instructions for grinding
- Use only wheel types that are recommended for your power tool and the specific guard designed for the selected wheel. Wheels for which the power tool was not designed cannot be adequately guarded and are unsafe.
- Wheels must be used only for recommended applications. For example: do not grind with the side of the cut-off wheel. Abrasive cut-off wheels are intended for peripheral grinding; side forces applied to these wheels may cause them to shatter.
- Always use undamaged wheel flanges that are of correct size and shape for your selected wheel. Proper wheel flanges support the wheel thus reducing the possibility of wheel breakage. Flanges for cut-off wheels may be different from grinding wheel flanges.
- Do not use worn down wheels from larger power tools. Wheels intended for larger power tools are not suitable for the higher speed of a smaller tool and may burst.
Additional safety warnings
Wear safety goggles.
- Use appropriate detectors to determine if utility lines are hidden in the work area or call the local utility company for assistance. Contact with electric lines can lead to fire and electric shock. Damaging a gas line can lead to explosion. Penetrating a water line causes property damage.
- Secure the workpiece. A workpiece clamped with clamping devices or in a vice is held more secure than by hand.
- The power tool is not suitable for stationary operation. For example, it may not be clamped in a vice or fastened on a workbench.
- Do not open the battery. Danger of short-circuiting. Protect the battery against heat, e. g., against continuous intense sunlight, fire, water, and moisture. Danger of explosion.
- In case of damage and improper use of the battery, vapours may be emitted. Provide for fresh air and seek medical help in case of complaints. The vapours can irritate the respiratory system.
- Use the battery only in conjunction with your Bosch power tool. This measure alone protects the battery against dangerous overload.
- Use only original Bosch batteries with the voltage listed on the nameplate of your power tool. When using other batteries, e. g. imitations, reconditioned batteries or other brands, there is danger of injury as well as property damage through exploding batteries.
Product Description and Specifications
Read all safety warnings and all instructions. Failure to follow the warnings
and instructions 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
The machine is designed for grinding and deburring metal using corundum
grinding tools, as well as for working with sanding wheels.
Product Features
The numbering of the product features refers to the illustration of the
machine on the graphics page.
- Collet chuck
- Clamping nut
- Grinder spindle
- Spindle collar
- On/Off switch
- Battery unlocking button*
- Battery*
- Handle (insulated gripping surface)
- Button for charge-control indicator*
- Battery charge-control indicator*
- Open-end spanner on the grinder spindle*
- Open-end spanner applied to clamping nut*
Accessories shown or described are not part of the standard delivery scope of the product. A complete overview of accessories can be found in our accessories program.
Noise/Vibration Information
Measured sound values determined according to EN 60745. Typically the
A-weighted noise levels of the product are: Sound pressure level 77 dB(A);
Sound power level 88 dB(A). Uncertainty K =3 dB.
Wear hearing protection!
Vibration total values ah
(triax vector sum) and Uncertainty K
determined according to EN 60745:
Surface grinding (with a wheel diameter of 25 mm):
- 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 standardized test given in EN 60745 and may be used to compare one tool with another. It may be used for a preliminary assessment of exposure. The declared vibration emission level represents the main applications of the tool. However, if the tool is used for different applications, with different accessories or poorly maintained, the vibration emission may differ. This may significantly increase the exposure level over the total working period. An estimation of the level of exposure to vibration should also take into account the times when the tool is switched off or when it is running but not actually doing the job. This may significantly reduce the exposure level over the total working period. Identify additional safety measures to protect the operator from the effects of vibration such as: maintaining the tool and the accessories, keep the hands warm, organization of work patterns.
Technical Data
Assembly
Battery Charging
- Use only the battery chargers listed on the accessories page. Only these battery chargers are matched to the lithium ion battery of your power tool.
Note: The battery is supplied partially charged. To ensure full capacity
of the battery, completely charge the battery in the battery charger before
using your power tool for the first time. The lithium-ion battery can be
charged at any time without reducing its service life. Interrupting the
charging procedure does not damage the battery. The lithium-ion battery is
protected against deep discharging by “Electronic Cell Protection (ECP)”. When
the battery is empty, the machine is switched off by means of a protective
circuit: The inserted tool no longer rotates.
Do not continue to press the On/Off switch after the machine has been
automatically switched off. The battery can be damaged. The battery is
equipped with a NTC temperature control which allows charging only within a
temperature range of between 0 °C and 45 °C. A long battery service life is
achieved in this manner. Observe the notes for disposal.
Removing the Battery
The battery 7 is equipped with two locking levels that should prevent the
battery from falling out when pushing the battery unlocking button 6
unintentionally. As long as the battery is inserted in the power tool, it is
held in position by means of a spring.
To remove the battery 7, press the battery unlocking button 6 and pull the
battery upward out of the power tool. Do not exert any force.
Battery Charge-control Indication (only for 3,0 Ah battery) (see figure
A)
The three green LEDs of the battery charge-control indicator 10 indicate the
charge condition of the battery 7. For safety reasons, it is only possible to
check the status of the charge condition when the machine is at a standstill.
Press button 9 to indicate the charge condition. This is also possible when
the battery 7 is removed.
When no LED lights up after pushing button 9, then the battery is defective and must be replaced.
Mounting the Grinding Tools (see figure B)
- Before any work on the machine itself (e. g. maintenance, tool change, etc.) as well as during transport and storage, remove the battery from the power tool. There is danger of injury when unintentionally actuating the On/Off switch.
- Only use properly fitting and undamaged open-end spanners (see “Technical Data”).
- Clean the grinder spindle 3 and all parts to be mounted.
- Hold the grinder spindle 3 with open-end spanner 11 by the spanner flats. Loosen the clamping nut 2 with open-end spanner 12 by applying it to the spanner flats and turning in anticlockwise direction.
- Insert the clamping shaft of the grinding tool to the stop into the collet chuck 1.
- Hold the grinder spindle 3 firmly with open-end spanner 11 and clamp the tool bit with open-end spanner 12 by the spanner flats, turning in clockwise direction. The grinding tools must run completely concentrical. Do not continue to use out-of-round grinding accessories, instead, replace before continuing to work.
- Do not tighten the collet chuck of the clamping nut as long as no grinding accessory is mounted. Otherwise, the collet chuck can become damaged.
Dust/Chip Extraction
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-treatment additives (chromate, wood preservative). Materials containing asbestos may only be worked by specialists.
-
* 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.
- Prevent dust accumulation at the workplace. Dusts can easily ignite.
Operation
Starting Operation
Inserting the Battery
- Use only original Bosch lithium ion batteries with the voltage listed on the nameplate of your power tool. Using other batteries can lead to injuries and pose a fire hazard. Insert the charged battery 7 into the base of the power tool until the battery is securely locked.
Switching On and Off
To start the power tool, push the On/Off switch 5 forwards. To lock the On/Off
switch 5, press the On/Off switch 5 down at the front until it latches. To
switch off the power tool, release the On/Off switch 5 or, if it is locked,
briefly push down the back of the On/Off switch 5 and then release it.
Restarting Protection
The restarting protection feature prevents uncontrolled restarting of the
machine after an interruption in the power supply. To restart the operation,
switch the On/Off switch 5 to the Off position and start the machine again.
Note: When switching off and on again very quickly, it is possible that the
restarting protection is triggered; this will prevent the power tool from
starting, although the On/Off switch 5 is actuated. Set the On/Off switch 5 to
the off position, and then switch the power tool on again.
Working Advice
Optimum grinding results are achieved when the grinding tool is moved
uniformly back and forth with light pressure. Pressure that is too strong
reduces the performance capability of the machine and causes the grinding tool
to wear more quickly.
Maintenance and Service
Maintenance and Cleaning
- Before any work on the machine itself (e. g. maintenance, tool change, etc.) as well as during transport and storage, remove the battery from the power tool. There is danger of injury when unintentionally actuating the On/Off switch.
- For safe and proper working, always keep the machine and ventilation slots clean.
If the machine should fail despite the care taken in manufacturing and testing
procedures, repair should be carried out by an after-sales service centre for
Bosch power tools. In all correspondence and spare parts order, please always
include 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 concerning the maintenance
and repair of your product as well as spare parts. Exploded views and
information on spare parts can also be found under: www.bosch-pt.com
Our customer service representatives can answer your
questions concerning possible applications and adjustments 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
Declaration of Conformity
We declare under our sole responsibility that the product described under
“Technical Data” is in conformity with the following standards or
standardization documents: EN 60745 according to the provisions of the
directives 2004/108/EC, 2006/42/EC.
Technical file at:
Robert Bosch GmbH, Postfach 10 01 56,
D-70745 Leinfelden-Echterdingen
Dr. Egbert Schneider Senior Vice President
Engineering Dr. Eckerhard Strötgen
Head of Product Certification
Robert Bosch GmbH, Power Tools Division D-70745 Leinfelden-Echterdingen 04.04.2011
Robert Bosch GmbH
Power Tools Division
70745 Leinfelden-Echterdingen
Germany