BOSCH GBH 2-24 RE Professional Rotary Hammer Instructions

BOSCH GBH 2-24 RE Professional Rotary Hammer Instructions

BOSCH GBH 2-24 RE Professional Rotary Hammer

Safety instructions

General Power Tool Safety Warnings

WARNING 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 mainsoperated (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 sur- faces, such as pipes, radiators, ranges and refrigerat- ors. 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 elec- tric shock.
▶ Do not abuse the cord. Never use the cord for carry- ing, 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 exten- sion cord suitable for outdoor use. Use of a cord suit- able 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) protec- ted 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 inatten- tion while operating power tools may result in serious per- sonal 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 in- juries.
▶ 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.
▶ 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 in- jury.
▶ 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 jew- ellery. Keep your hair, clothing and gloves 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 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

▶ 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 de- signed.
▶ 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 bind- ing 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 main- tained 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 ac- count the working conditions and the work to be per-

formed. Use of the power tool for operations different from those intended could result in a hazardous situation.

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.

Hammer Safety Warnings

▶ Wear ear protectors. Exposure to noise can cause hear- ing loss.
▶ Use auxiliary handle(s), if supplied with the tool. Loss of control can cause personal injury.
▶ Hold power tool by insulated gripping surfaces when performing an operation where the cutting accessory or fastener may contact hidden wiring or its own cord. Cutting accessory and fasteners contacting a “live” wire may make exposed metal parts of the power tool “live” and could give the operator an electric shock.

▶ Use suitable detectors to determine if utility lines are hidden in the work area or call the local utility com- pany 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 dam- age or may cause an electric shock.
▶ Always wait until the power tool has come to a com- plete stop before placing it down. The application tool can jam and cause you to lose control of the power tool.
▶ Secure the workpiece. A workpiece clamped with clamping devices or in a vice is held more secure than by hand.

Products sold in GB only:

Your product is fitted with an 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 au- thorised 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 socket elsewhere.
▶ Hold the power tool firmly with both hands and make sure you have a stable footing. The power tool can be more securely guided with both hands.

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

GBH 2-24 RE

The power tool is intended for hammer drilling in concrete, brick and stone. It is also suitable for drilling without impact in wood, metal, ceramic and plastic. Power tools with electronic
control and right/left rotation are also suitable for screwdriving.

GBH 2-24 DRE, GBH 2-24 DFR

The power tool is intended for hammer drilling in concrete, brick and stone, as well as for light chiselling work. It is also suitable for drilling without impact in wood, metal, ceramic
and plastic. Power tools with electronic control and right/left rotation are also suitable for screwdriving.

Product Features

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

1.  Keyless quick-change chuck (GBH 2-24 DFR)
2. SDS plus quick-change chuck (GBH 2-24 DFR)
3. SDS plus tool holder
4. Dust protection cap
5. Locking sleeve
6. Locking ring for quick-change chuck

(GBH 2-24 DFR)

7. Rotational direction switch

8. Lock-on button for on/off switch

9. On/off switch

10. Release button for impact/mode selector switch
    (GBH 2-24 DRE, GBH 2-24 DFR)

11. Impact/mode selector switch (GBH 2-24 DRE,

GBH 2-24 DFR)

12. Button for depth stop adjustment
13.  Depth stop
14.  Auxiliary handle (insulated gripping surface)
15.  Release button for “drilling/hammer drilling” selector switch (GBH 2-24 RE)
16. “Drilling/hammer drilling” selector switch

(GBH 2-24 RE)

17. Handle (insulated gripping surface)

18. Securing screw for keyed chucka)

19. Keyed chucka)

20. SDS plus shank for drill chucka)

21. Drill chuck holder (GBH 2-24 DFR)

22. Front sleeve of the keyless quick-change chuck
    (GBH 2-24 DFR)

23. Retaining ring of the keyless quick-change chuck

(GBH 2-24 DFR)

24. Saugfix suction openinga)
25.  Saugfix clamping screwa)
26.  Saugfix depth stopa)
27. Saugfix telescopic tubea)
28. Saugfix wing bolta)
29. Saugfix guide tubea
30. Universal holder with SDS plus shanka) 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.

Technical Data

2.7
Rated speed| min-1| 0–930| 0–930| 0–930
Tool holder|  | SDS plus| SDS plus| SDS plus
Spindle collar diameter| mm| 48.5| 48.5| 48.5

Max. drilling diameter

The specifications apply to a rated voltage [U] of 230 V. These specifications may vary at different voltages and in country-specific models.

Noise/Vibration Information

Noise emission values determined according to EN 60745-2-6.
Typically, the A-weighted noise level of the power tool is:
Sound pressure level 93 dB(A); sound power level 104 dB(A). Uncertainty K = 3 dB.

Wear hearing protection!

Vibration total values ah (triax vector sum) and uncertainty K determined according to EN 60745-2-6 :
Hammer drilling into concrete: ah= 13.0 m/s2, K= 1.5 m/s2, Chiselling: ah= 14.0 m/s2, K= 1.5 m/s2,
The vibration level given in these instructions has been measured in accordance with a standardised measuring pro- cedure and may be used to compare power tools. It can also be used for a preliminary estimation of exposure to vibra- tion.
The stated vibration level applies to the main applications of the power tool. However, if the power tool is used for differ- ent applications, with different application tools or poorly maintained, the vibration level may differ. This can signific- antly increase the exposure to vibration over the total work- ing period.
To estimate the exposure to vibration accurately, the times when the tool is switched off or when it is running but not ac- tually being used should also be taken into account. This can significantly reduce the exposure to vibration over the total working period.
Implement additional safety measures to protect the oper- ator from the effects of vibration, such as servicing the power tool and application tools, keeping the hands warm, and organising workflows correctly.

Assembly

▶ Pull the plug out of the socket before carrying out any work on the power tool. Auxiliary handle
▶ Do not operate your power tool without the auxiliary handle (14). Swivelling the auxiliary handle (see figure A)

You can swivel the auxiliary handle (14) to any angle for a safe work posture that minimises fatigue.

– Turn the lower gripping end of the auxiliary handle (14) anticlockwise and swivel the auxiliary handle (14) into

the required position. Then turn the lower gripping end of the auxiliary handle (14) clockwise to retighten it.

Make sure that the retaining strap of the auxiliary handle slots into the corresponding groove of the housing.

Selecting drill chucks and tools

Hammer drilling and chiselling require SDS-plus application tools that are inserted into the SDS-plus drill chuck.

For drilling without impact in wood, metal, ceramic and plastic as well as for screwdriving, tools without SDS‑plus are used (e.g. cylindrical shank drill bits). For these tools, a keyless chuck or a keyed chuck are required.

GBH 2-24 DFR : The SDS plus quick-change chuck (2) can easily be swapped with the keyless quick-change chuck (1) supplied.

Changing the drill chuck

Inserting/removing the keyed chuck GBH 2-24 RE, GBH 2-24 DRE

You must use a suitable drill chuck (keyed or keyless chuck,

accessories) to work with tools that do not have SDS-plus (e.g. cylindrical shank drill bits).

Fitting the keyed chuck (see figure B)

• Screw the SDS-plus shank (20) into a keyed chuck (19). Secure the keyed chuck (19) using the securing screw (18). Note that the securing screw has a left-hand

Inserting the keyed chuck (see figure B)

• Clean and lightly grease the insertion end of the
• Insert the keyed chuck with the adapter shank into the tool holder with a turning motion until it automatically
• Check that it is locked by pulling the keyed

Removing the keyed chuck

• Push the locking sleeve (5) back and remove the keyed chuck (19).

Removing/inserting the quick-change chuck GBH 2-24 DFR

Removing the Quick-Change Chuck (see figure C)

• Pull back on the quick-change chuck locking ring (6) , hold it in this position and pull the SDS plus quick-change chuck (2) or the keyless quick-change chuck (1) out from the
• Once the quick-change chuck is removed, protect it from

Inserting the Quick-Change Chuck (see figure D)

• Before insertion, clean the quick-change chuck and lightly grease the
• Wrap your whole hand around the SDS plus quick-change chuck (2) or the keyless quick-change chuck (1). Use a turning motion to push the quick-change chuck into the drill chuck holder (21) until you hear it click into
• The quick-change chuck is automatically Check that it is locked by pulling on the quick-change chuck.

Changing the Tool

The dust protection cap (4) largely prevents the penetration of drilling dust into the tool holder during operation. When inserting the tool, make sure that the dust protection cap (4) does not become damaged.

▶ Replace a damaged dust protection cap immediately. It is recommended

that you have use an after-sales service for this.

Changing the tool (SDS plus)

Inserting SDS plus application tools (see figure E)

The SDS-plus drill chuck enables you to change the applica- tion tool easily and conveniently without needing to use ad- ditional tools.

• GBH 2-24 DFR : Insert the SDS plus quick-change chuck (2).
• Clean and lightly grease the shank of the application
• Insert the application tool into the tool holder while turn- ing it until it locks
• Check that it is locked by pulling on the

As a requirement of the system, the SDS-plus application tool can move freely. This causes a certain radial run-out at no-load, which has no effect on the accuracy of the drill hole, as the drill bit centres itself upon drilling.

Removing SDS-plus application tools (see figure F)

• Push the locking sleeve (5) back and remove the applica- tion

Changing the keyed chuck GBH 2-24 RE, GBH 2-24 DRE

Inserting the Application Tool

Note: Application tools that do not have SDS plus must not be used for hammer drilling or chiselling. Tools without SDS plus and their drill chucks are damaged by hammer drilling or chiselling.

• Insert a keyed chuck (19).
• Open the keyed chuck (19) by turning it until the tool can be Insert the tool.
• Insert the chuck key into the corresponding holes of the keyed chuck (19) and clamp the tool
• GBH 2-24 RE : Set the selector switch (16) to the “drilling”
• GBH 2-24 DRE : Turn the impact/mode selector switch

(11) to the “drilling” position.

Removing the application tool

• Use the chuck key to turn the sleeve of the keyed

chuck (19) anticlockwise until the application tool can be removed.

Changing the keyless quick-change chuck GBH 2-24 DFR

Inserting the application tool (see figure G)

Note: Application tools that do not have SDS plus must not be used for hammer drilling or chiselling. Tools without SDS plus and their drill chucks are damaged by hammer drilling or chiselling.

• Insert the keyless quick-change chuck (1).
• Hold the retaining ring (23) of the keyless quick-change chuck firmly in Open the tool holder by turning the front sleeve (22) until the tool can be inserted. Hold the retaining ring (23) in place and firmly tighten the front sleeve (22) by turning it in the direction of the arrow until you hear it click into place.
• Check that it is seated securely by pulling on the tool. Note: If the tool holder was unscrewed all the way, a scrap- ing sound may be heard while retightening the tool holder and it may not fully

In this case, turn the front sleeve (22) in the opposite direc- tion to the arrow by one full turn. This will allow the tool holder to be fully tightened.

• Turn the impact/mode selector switch (11) to the “drilling”

Removing the application tool (see figure H)

• Hold the retaining ring (23) of the keyless quick-change chuck firmly in Open the tool holder by turning the front sleeve (22) in the direction of the arrow until the tool can be removed.

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 reac- tions 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 contain- ing asbestos may only be machined by specialists.

• Use a dust extraction system that is suitable for the ma- terial wherever
• Provide good ventilation at the
• It is advisable to wear a P2 filter class breathing 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.

Dust extraction with the dust extraction attachment (accessory)

Fitting the dust extraction attachment (see figure I)

For dust extraction, the dust extraction attachment (access- ory) is required. When drilling, the dust extraction attach- ment retracts so that the attachment head is always close to the surface at the drill hole.

• Press the button for depth stop adjustment (12) and re- move the depth stop (13). Press the button (12) again and insert the dust extraction attachment into the auxili- ary handle (14) from the
• Connect an extraction hose (diameter 19 mm, accessory) to the suction opening (24) of the dust extraction attach-

The dust extractor must be suitable for the material being worked.

When extracting dust that is dry, especially detrimental to health or carcinogenic, use a special dust extractor.

Setting the drilling depth on the dust extraction attachment (see figure

J)

You can also set the required drilling depth X when the dust extraction attachment is fitted.

• Push the SDS-plus application tool into the SDS-plus tool holder (3) as far as it will go. Otherwise, the movability of the SDS-plus drilling tool can lead to incorrect adjustment of the drilling
• Loosen the wing bolt (28) on the dust extraction attach-
• Without switching it on, press the power tool firmly against the surface you wish to The SDS-plus applic- ation tool must be touching the surface.
• Position the guide tube (29) of the dust extraction attach- ment in its holder such that the head of the dust extrac- tion attachment rests on the surface to be Do not slide the guide tube (29) further than necessary over the telescopic tube (27) , so that as much as possible of the scale remains visible on the telescopic tube (27).
• Retighten the wing bolt (28). Loosen the clamping screw

(25) on the depth stop of the dust extraction attachment.

• Slide the depth stop (26) onto the telescopic tube (27) so that the distance X shown in the illustration matches your required drilling
• Tighten the clamping screw (25) in this

Operation

▶ Products that are only sold in AUS and NZ: Use a resid- ual current device (RCD) with a nominal residual current of 30 mA or less.

Start-up

▶ Pay attention to the mains voltage. The voltage of the power source

must match the voltage specified on the rating plate of the power tool. Power tools marked with 230 V can also be operated with 220 V.

Setting the Operating Mode GBH 2-24 RE :
Use the “drilling/hammer drilling” selector switch (16) to se- lect the power tool’s operating mode.

• To change the operating mode, press the release button (15) and turn the “drilling/hammer drilling” se-

lector switch (16) until it clicks into the required position.
Note: Only change the operating mode when the power tool is switched off. Otherwise, the power tool may become dam- aged.

Position for hammer drilling into concrete or stone

Position for drilling without impact in wood, metal, ceramic and plastic and for screwdriving

GBH 2-24 DRE, GBH 2-24 DFR:

The operating mode of the power tool is selected using the impact/mode selector switch (11).
– To change the operating mode, press the release button (10) and turn the impact/mode selector switch (11) until it clicks into the required position.
Note: Only change the operating mode when the power tool is switched off. Otherwise, the power tool may become damaged.

Setting the Rotational Direction

The rotational direction switch (7) is used to change the ro- tational direction of the power tool. However, this is not pos- sible while the on/off switch (9) is being pressed.

▶ Only operate the rotational direction switch (7) when the power tool

is not in use.

Always set the rotational direction to clockwise rotation for hammer drilling, drilling and chiselling.

• Rotate clockwise: Turn the rotational direction

switch (7) on both sides until it stops in the             position.

• Rotate anticlockwise: Turn the rotational direction switch (7) on both sides until it stops in the

Switching On/Off

• To switch on the power tool, press the on/off switch (9).
• To lock the on/off switch (9) , press and hold it while also pushing the lock-on button (8).
• To switch off the power tool, release the on/off switch (9). If the on/off switch (9) is locked, press the switch first and then release

Adjusting the Speed/Impact Rate

You can adjust the speed/impact rate of the power tool when it is on by pressing in the on/off switch (9) to varying ex- tents.

Applying light pressure to the on/off switch (9) results in a low rotational speed/impact rate. Applying increasing pres- sure to the switch increases the speed/impact rate.

Changing the chiselling position (Vario-Lock) GBH 2-24 DRE, GBH 2-24 DFR

You can lock the chisel in 36 different positions, so you can select the optimum working position for each task.

• Insert the chisel into the tool holder.
• Turn the impact/mode selector switch (11) to the “Vario- Lock”
• Turn the application tool to the required chisel
• Turn the impact/mode selector switch (11) to the “chis- elling” With this, the tool holder is locked.
• Set the rotational direction for chiselling to

Practical Advice

Setting the drilling depth (see figure K)

You can use the depth stop (13) to set the required drilling depth X.

• Press the button for depth stop adjustment (12) and in- sert the depth stop into the auxiliary handle (14).

The fluting on the depth stop (13) must face downwards.

• Insert the SDS-plus application tool into the SDS-plus tool holder (3) to the stop. Otherwise, the movability of the SDS-plus drilling tool can lead to incorrect adjustment of the drilling
• Pull the depth stop far enough out that the distance between the drill bit tip and the edge of the depth stop corresponds to the required drilling depth X.

Overload clutch

▶ If the application tool jams or snags, the power trans- mission to the drill spindle will be interrupted. Always hold the power tool firmly with both hands to with- stand the forces this may create and adopt a position with stable footing.

▶ Switch the power tool off immediately and remove the application tool

if the power tool becomes blocked.

Switching on when the drilling tool is blocked may cause high torque reactions.

Inserting screwdriver bits (see figure L)

▶ Only apply the power tool to the screw/nut when the tool is switched off. Rotating tool inserts can slip off.

A universal holder (30) with SDS-plus shank (accessory) is required to work with screwdriver bits.

• Clean and lightly grease the insertion end of the
• Insert the universal holder into the tool holder while turn- ing it until it locks
• Check that it is locked by pulling the universal
• Insert a screwdriver bit in the universal Only use screwdriver bits that fit the screw head.
• To remove the universal holder, slide the locking sleeve

(5) backwards and remove the universal holder (30)

from the tool holder.

Maintenance and Service

Maintenance and Cleaning

▶ Pull the plug out of the socket before carrying out any work on the

power tool.

▶ Replace a damaged dust protection cap immediately. It is recommended

that you have use an after-sales service for this.

• Clean the tool holder (3) after each

After-Sales Service and Application Service
Our after-sales service responds to your questions concern- ing 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.comThe Bosch product use advice team will be happy to help you with any questions about our products and their accessor- ies.
In all correspondence and spare parts orders, please always include the 10‑digit article number given on the nameplate of the product.

Malaysia

Robert Bosch Sdn. Bhd.(220975-V) PT/SMY No. 8A, Jalan 13/6
46200 Petaling Jaya Selangor
Tel.: (03) 79663194
Toll-Free: 1800 880188
Fax: (03) 79583838

E-Mail: kiathoe.chong@my.bosch.com www .bosch-pt.com.my

You can find further service addresses at:

www.bosch-pt.com/serviceaddresses

Disposal

The power tool, accessories and packaging should be re- cycled in an environmentally friendly manner.
Do not dispose of power tools along with household waste.

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References

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• 📧sav.outillage@ma.bosch.com
• 📧tuvankhachhang-pt@vn.bosch.com
• baohanhbosch-pt.com.vn
• Bosch Power Tools | Bosch Power Tools
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