BOSCH GSR 12V-20 Professional Cordless Drill Driver Instruction Manual

: June 3, 2024
: Bosch

Table of Contents

BOSCH GSR 12V-20 Professional Cordless Drill Driver
Safety instructions
Product Description and Specifications
Product Features
Technical Data
Fitting
Operation
Maintenance and Servicing
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

BOSCH GSR 12V-20 Professional Cordless Drill Driver

Safety instructions

General Power Tool Safety Warnings
WARNING 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.

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 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. 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 un-avoidable, 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 a 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 energising 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 and clothing away from moving parts. Loose clothes, jewellery 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.
Do not let familiarity gained from frequent use of tools allow you to become complacent and ignore tool safety principles. A careless action can cause severe injury within a fraction of a second.

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 remove the battery pack, if detachable, 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 and accessories. 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.
Keep handles and grasping surfaces dry, clean and free from oil and grease. Slippery handles and grasping surfaces do not allow for safe handling and control of the tool in unexpected situations.

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 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.
Do not use a battery pack or tool that is damaged or modified. Damaged or modified batteries may exhibit unpredictable behaviour resulting in fire, explosion or risk of injury.
Do not expose a battery pack or tool to fire or excessive temperature. Exposure to fire or temperature above 130°C may cause explosion.
Follow all charging instructions and do not charge the battery pack or tool outside the temperature range specified in the instructions. Charging improperly or at temperatures outside the specified range may damage the battery and increase the risk of fire.

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.
Never service damaged battery packs. Service of battery packs should only be performed by the manufacturer or authorized service providers.

Safety information for drills and screwdrivers

Hold the power tool by insulated gripping surfaces, when performing an operation where the cutting accessory or fasteners may contact hidden wiring. Cutting accessory contacting a “live” wire may make exposed metal parts of the power tool “live” and could give the operator an electric shock.
Switch the power tool off immediately if the application tool becomes blocked. Be prepared for high torque reactions which cause kickback. The application tool becomes blocked when it becomes jammed in the workpiece or when the power tool becomes overloaded.
Secure the workpiece. A workpiece clamped with clamping devices or in a vice is held more secure than by hand.
Use suitable detectors to determine if there are hidden supply lines or contact the local utility company for assistance. Contact with electric cables can cause fire and electric shock. Damaging gas lines can lead to explosion. Breaking water pipes causes property damage.
Always wait until the power tool has come to a complete stop before placing it down. The application tool can jam and cause you to lose control of the power tool.
In case of damage and improper use of the battery, vapours may be emitted. Ensure the area is well-ventilated and seek medical attention should you experience any adverse effects. The vapours may irritate the respiratory system.
Do not open the battery. There is a risk of short-circuit-ing.
The battery can be damaged by pointed objects such as nails or screwdrivers or by force applied externally. An internal short circuit may occur, causing the battery to burn, smoke, explode or overheat.
Only use the battery with products from the manufacturer. This is the only way in which you can protect the battery against dangerous overload.

Protect the battery against heat, e.g. against continuous intense sunlight, fire, water and moisture. There is a risk of explosion.

Product Description and Specifications

Read all the safety and general instructions.
Failure to observe the safety and general instructions may result in electric shock, fire and/or serious injury.
Please observe the illustrations at the beginning of this operating manual.

Intended use
The power tool is intended for driving and loosening screws and for drilling in wood, metal, ceramic and plastic.

Product Features

The numbering of the product features refers to the diagram of the power tool on the graphics page.

Tool holder
Locking sleeve
Torque presetting ring
Gear selector switch
Battery release button
Battery
Rotational direction switch
On/off switch
Battery charge indicator
Worklight
Keyless chuck
Handle (insulated gripping surface)
Universal bit holder A)

Accessories shown or described are not included with the product as standard. You can find the complete selection of accessories in our accessories range.

BOSCH GSR 12V-20 Professional Cordless Drill Driver 1

BOSCH GSR 12V-20 Professional Cordless Drill Driver 2

Technical Data

Cordless screwdriver		GSR 12V-20	GSR 12V-20 HX
Article number		3 601 JD4 0..	3 601 JD4 1..
Rated voltage	V =	10.8/12	10.8/12

No-load speed

– First gear

– Second gear

| rpm

rpm

| 0–400

0–1 300

| 0–400

0–1 300

---|---|---|---
Maximum torque, soft screw driving applica- tion according to ISO 5393| Nm| 18 A)| 18 A)
Maximum torque, hard screw driving application according to ISO 5393| Nm| 20 A)| 20 A)

Max. drilling diameter (first/second gear)

– Wood

– Steel

| mm

mm

| 30

10

| 30

10

---|---|---|---
Max. screwdriving diameter| mm| 7| 7
Tool holder| | 1–10| 6.35 (¼”)
Weight according to

EPTA-Procedure 01:2014

| kg| 0.88–1.1 A)| 0.72–0.96 A)

Permitted ambient temperature

– during charging	°C	0… +45	0… +45
– during operation B) and during storage	°C	–20… +50	–20… +50
Recommended batteries		GBA 12V…

GBA 10,8V…

| GBA 12V…

GBA 10,8V…

Recommended chargers| | GAL 12.. CV

AL 11.. CV GAL 12V-.. GAX 18V-30

| GAL 12.. CV

AL 11.. CV GAL 12V-.. GAX 18V-30

A) Depends on battery in use
B) Limited performance at temperatures <0 °C

Noise/vibration information
Noise emission values determined according to EN 60745-2-1, EN 62841-2-2.
Typically, the A-weighted sound pressure level of the power tool is 72 dB(A). Uncertainty K = 3 dB. The noise level when working can exceed 80 dB(A).

Wear hearing protection
Total vibration values ah (triax vector sum) and uncertainty K determined according to EN 60745-2-1, EN 62841-2-2:
Drilling into metal: ah < 2.5 m/s2, K= 1.5 m/s2
Screwdriving: ah < 2.5 m/s2, K= 1.5 m/s2

The vibration level and noise emission value given in these instructions have been measured in accordance with a standardised measuring procedure and may be used to compare power tools. They may also be used for a preliminary estimation of vibration and noise emissions.

The stated vibration level and noise emission value represent the main applications of the power tool. However, if the power tool is used for other applications, with different application tools or is poorly maintained, the vibration level and noise emission value may differ. This may significantly increase the vibration and noise emissions over the total working period.

To estimate vibration and noise emissions accurately, the times when the tool is switched off or when it is running but not actually being used should also be taken into account. This may significantly reduce vibration and noise emissions over the total working period.

Implement additional safety measures to protect the operator from the effects of vibration, such as servicing the power tool and application tools, keeping their hands warm, and organising workflows correctly.

Fitting

Charging the battery

Use only the chargers listed in the technical data. Only these chargers are matched to the lithium-ion battery of your power tool.
Note: The battery is supplied partially charged. To ensure full battery capacity, fully charge the battery in the 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 process does not damage the battery.
The lithium-ion battery is protected against deep discharge by the “Electronic Cell Protection (ECP)”. When the battery is discharged, the power tool is switched off by means of a protective circuit: The application tool no longer rotates.
Do not continue to press the On/Off switch after the power tool has automatically switched off. The battery can be damaged.

Removing the battery (see figure A)
To remove the battery (5), press the release button (4) and pull the battery downwards out of the power tool. Do not use force to do this.
Follow the instructions on correct disposal.

Changing the tool
Remove the battery from the power tool before carry-ing out work on the power tool (e.g. maintenance, changing tool, etc.). The battery should also be re-moved for transport and storage. There is risk of injury from unintentionally pressing the on/off switch.

Inserting the application tool
GSR 12V-20 HX (see figure B)
Pull the locking sleeve (2) forward, guide the application tool into the tool holder up to the stop and release the locking sleeve (2) to lock the application tool.

GSR 12V-20 (see figure C)
Open the keyless chuck (11) by turning it in the direction of rotation ➊ until the tool can be inserted. Insert the tool. Firmly tighten the keyless chuck (11) by turning it by hand in the direction of rotation ➋. This will automatically lock the drill chuck.

Removing (GSR 12V-20 HX)
Pull the locking sleeve (2) forward and remove the application tool.

Dust/chip extraction
The dust from materials such as lead paint, some types of wood, minerals and metal can be harmful to human health. Touching or breathing in this dust can trigger allergic reactions and/or cause respiratory illnesses in the user or in people in the near vicinity.

Certain dusts, such as oak or beech dust, are classified as carcinogenic, especially in conjunction with wood treatment additives (chromate, wood preservative). Materials containing asbestos may only be machined by specialists.

Use a dust extraction system that is suitable for the material wherever possible.
Provide good ventilation at the workplace.
It is advisable to wear a P2 filter class breathing mask.

The regulations on the material being machined that apply in the country of use must be observed.
Avoid dust accumulation at the workplace. Dust can easily ignite.

Operation

Start-up
Inserting the battery
Note: The use of batteries unsuitable for your power tool can lead to malfunctions or damage to the power tool.
Set the rotational direction switch (7) to the middle position to avoid unintentionally switching it on. Insert the charged battery (6) into the handle until you feel it engage and it is flush with the handle.

Setting the rotational direction (see figure D)
The rotational direction switch (6) is used to change the rotational direction of the power tool. However, this is not possible while the on/off switch (7) is being pressed.
Right rotation: To drill and to drive in screws, press the rotational direction switch (6) through to the left stop.
Left Rotation: To loosen and unscrew screws and nuts, press the rotational direction switch (6) through to the right stop.

BOSCH GSR 12V-20 Professional Cordless Drill Driver 3

Preselecting the Torque
The torque presetting ring (2) can be used to preselect the required torque in 20 stages. When the correct setting is used, the application tool will be stopped when the screw is driven flush into the material or once the set torque has been reached. In position the overload clutch is deactivated, e.g. for drilling.
When unscrewing screws, you can select a higher setting or set the tool to the symbol.

Mechanical gear selection
Only operate the gear selector switch (4) when the power tool is not in use.

You can pre-select two speed ranges with the gear selector switch (4).

Gear I: Low speed range; for screwdriving or working with a large drilling diameter.
Gear II: High speed range; for working with a small drilling diameter.

Always push the gear selector as far as it will go. Otherwise, the power tool may become damaged.

Switching on/off
To start the power tool, press and hold the on/off switch (8).
The worklight (10) lights up when the on/off switch (8) is lightly or fully pressed, allowing the work area to be illuminated in poor lighting conditions.
The worklight (10) will remain lit for approx. 10 seconds after the on/off switch (8) has been released.
To save energy, only switch the power tool on when in use.

Adjusting the speed
You can adjust the speed of the power tool when it is on by pressing in the on/off switch (8) to varying extents. Applying light pressure to the on/off switch (8) results in a low rotational speed. Increased pressure on the switch causes an increase in speed.

Fully automatic spindle lock (Auto-Lock)
The drill spindle, and therefore the holder, are locked when the on/off switch (8) is not pressed.
This allows screws to be driven in even when the battery is discharged and enables the power tool to be used as a screwdriver.

Temperature-dependent overload protection
In normal conditions of use, the power tool cannot be overloaded. If the power tool is overloaded or not kept within the permitted operating temperature range, the power output is reduced or the power tool is switched off. The power tool will not run at full power output again until the permitted operating temperature has been reached.

Battery charge indicator
When the on/off switch (8) is pressed in halfway or completely, the battery charge indicator (9) indicates the state of charge of the battery for several seconds. The indicator consists of three green LEDs.

LED Capacity
Continuous lighting 3 x green ≥ 2/3
Continuous lighting 2 x green ≥ 1/3
Continuous lighting 1 x green < 1/3
Flashing light 1 x green Reserve

Practical advice
Only apply the power tool to the screw when the tool is switched off. Rotating application tools can slip off.
After working at a low speed for an extended period, you should operate the power tool at the maximum speed for approximately three minutes without load to cool it down.

When drilling into metal, only use sharpened HSS drills (HSS = High-grade high-speed steel) which are in perfect condition. The Bosch accessory range guarantees appropriate quality.

Before screwing larger, longer screws into hard materials, it is advisable to pre-drill a pilot hole with the core diameter of the thread to approx. 2/3 of the screw length.

Maintenance and Servicing

Maintenance and Cleaning

Remove the battery from the power tool before carrying out work on the power tool (e.g. maintenance, changing tool, etc.). The battery should also be re-moved for transport and storage. There is risk of injury from unintentionally pressing the on/off switch.
To ensure safe and efficient operation, always keep the power tool and the ventilation slots clean.

Keep the tool holder and the application tool clean at all times to guarantee the locking and unlocking functionality of the locking sleeve.

After-sales service and advice on using products
Our after-sales service responds to your questions concerning maintenance and repair of your product as well as spare parts. You can find explosion drawings and information on spare parts at: www.bosch-pt.com
The Bosch product use advice team will be happy to help you with any questions about our products and their accessories.

In all correspondence and spare parts orders, please always include the 10‑digit article number given on the nameplate of the product.

Great Britain
Robert Bosch Ltd. (B.S.C.)
P.O. Box 98
Broadwater Park
North Orbital Road
Denham Uxbridge
UB 9 5HJ
At www.bosch-pt.co.uk you can order spare parts or arrange the collection of a product in need of servicing or repair.
Tel. Service: (0344) 7360109
E-Mail: boschservicecentre@bosch.com

Ireland
Origo Ltd.
Unit 23 Magna Drive
Magna Business Park
City West
Dublin 24
Tel. Service: (01) 4666700
Fax: (01) 4666888

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: (01300) 307044
Fax: (01300) 307045
Inside New Zealand:
Phone: (0800) 543353
Fax: (0800) 428570
Outside AU and NZ:
Phone: +61 3 95415555
www.bosch-pt.com.au
www.bosch-pt.co.nz

Republic of South Africa
Customer service
Hotline: (011) 6519600

Gauteng – BSC Service Centre
35 Roper Street, New Centre
Johannesburg
Tel.: (011) 4939375
Fax: (011) 4930126
E-mail: bsctools@icon.co.za

KZN – BSC Service Centre
Unit E, Almar Centre
143 Crompton Street
Pinetown
Tel.: (031) 7012120
Fax: (031) 7012446
E-mail: bsc.dur@za.bosch.com

Western Cape – BSC Service Centre
Democracy Way, Prosperity Park
Milnerton
Tel.: (021) 5512577
Fax: (021) 5513223
E-mail: bsc@zsd.co.za

Bosch Headquarters
Midrand, Gauteng
Tel.: (011) 6519600
Fax: (011) 6519880
E-mail: rbsa-hq.pts@za.bosch.com

Transport
The contained lithium-ion batteries are subject to the Dangerous Goods Legislation requirements. The batteries are suitable for road transport by the user without further restrictions.
When shipping by third parties (e.g.: by air transport or forwarding agency), special requirements on packaging and labeling must be observed. For preparation of the item being shipped, consulting an expert for hazardous material is required.

Dispatch battery packs only when the housing is undamaged. Tape or mask off open contacts and pack up the battery in such a manner that it cannot move around in the packaging. Please also observe the possibility of more de-tailed national regulations.

Disposal
The machine, rechargeable batteries, ac-cessories and packaging should be sorted for environmental-friendly recycling.

Do not dispose of power tools and batteries/rechargeable batteries into household waste!

Only for EU countries:
According to the Directive 2012/19/EU, power tools that are no longer usable, and according to the Directive 2006/66/EC, defective or used battery packs/batteries, must be collected separately and disposed of in an environmentally correct manner.

Battery packs/batteries:
Li-ion: Please observe the notes in the section on transport (see “Transport”).

EU Declaration of Conformity
We declare under our sole responsibility that the stated products comply with all applicable provisions of the directives and regulations listed below and are in conformity with the following standards.