Bosch GBH 240 Rotary Hammer With SDS Plus User Guide

Bosch GBH 240 Rotary Hammer With SDS Plus

Safety instructions

1. Keep the work area clean and well-lit. Cluttered or dark areas invite accidents.
2. Keep children and bystanders away while operating a power tool.
3. Distractions can cause you to lose control. Electrical safety
4. Power tool plugs must match the outlet. Never modify the plug in any way.
5. Do not use any adapter plugs with earthed (grounded) power tools.
6. Unmodified plugs and matching outlets will reduce the risk of electric shock.
7. Do not expose power tools to rain or wet conditions.
8. Water entering a power tool will increase the risk of electric shock.
9. Damaged or entangled cords increase the risk of electric shock.
10. When operating a power tool outdoors, use an extension cord suitable for outdoor use.
11. Use of a cord suitable for outdoor use reduces the risk of electric shock.
12. Stay alert, watch what you are doing, and use common sense when operating a power tool.
13. A moment of inattention while operating power tools may result in serious personal injury.
14. Remove any adjusting key or wrench before turning the power tool on.
15. A wrench or a key left attached to a rotating part of the power tool may result in personal injury.
16. Do not overreach. Keep proper footing and balance at all times.
17. This enables better control of the power tool in unexpected situations.
18. Dress properly. Do not wear loose clothing or jewellery.
19. Keep your hair and clothing away from moving parts.
20. The use of dust collection can reduce dust-related hazards.

Product Description and Intended Use

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 3-28 DFR, GBH 3000)
2. SDS plus quick-change chuck (GBH 3-28 DFR, GBH 3000)
3. DS plus tool holder
4. Dust protection cap
5. Locking sleeve
6. Locking ring for quick-change chuck  GBH 3-28 DFR, GBH 3000)
7. On/off switch
8. Release button for the impact/mode selector switch
9. Impact/mode selector switch
10. Button for depth stop adjustment
11. Depth stop
12. Auxiliary handle (insulated gripping surface)
13. Rotational direction switch
14. Handle (insulated gripping surface)
15. Securing screw for keyed chucka)
16. Keyed chucka)
17. SDS plus shank for drill chucka)
18. Drill chuck holder (GBH 3-28 DFR, GBH 3000)
19. Identification grooves
20. Front sleeve of the keyless quick-change chuck(GBH 3-28 DFR, GBH 3000)
21. Retaining ring of the keyless quick-change chuck (GBH 3-28 DFR, GBH 3000)
22. GDE 16 Plus dust extraction system)
23. Universal holder with SDS plus shanka)

Noise / Vibration Information

The vibration level and noise emission value given in these instructions have been measured in accordance with standardized measuring procedures 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 accessories,s 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 accessories, keeping their hands warm, and organizing workflows correctly.

Assembly

• Pull the plug out of the socket before carrying out any work on the power tool.
• Do not operate your power tool without the auxiliary handle (12).
• Make sure that the auxiliary handle is always tightened.
• Otherwise, you could lose control of the power tool when working.g

Swivelling the Auxiliary Handle 

You can swivel the auxiliary handle (12) to any angle for a safe work posture that minimizes fatigue. – Turn the lower gripping end of the auxiliary handle (12) anticlockwise and swivel the auxiliary handle (12) into the required position. Then turn the lower gripping end of the auxiliary handle (12) 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

• For hammer drilling and chiselling, you will need SDS plus tools, which insert into the SDS plus drill chuck.
• For drilling without impact in wood, metal, ceramic, and plastic, as well as for screwdriving, tools without SDS+ are used (e.g., cylindrical shank drill bits).
• For these tools, a keyless chuck or a keyed chuck is required.

Inserting/Removing the Keyed Chuck

GBH 3-28 DRE

You must use a suitable drill chuck (keyed or keyless chuck) to work with tools that do not have SDS plus (e.g., cylindrical shank drill bits).

Fitting the keyed chuck

Screw the SDS plus shank (17) into a keyed chuck (16). Secure the keyed chuck (16) using the securing screw (15). Note that the securing screw has a left-hand thread.

Inserting the keyed chuck

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

Removing the keyed chuck

• Push the locking sleeve (5) back and remove the keyed chuck (16).

Quick-Change Chuck

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

Inserting the quick-change chuck

• Use only model-specific original equipment and pay attention to the number of identification grooves.
• Only quick-change chucks with two or three identification grooves are permitted.
• If an unsuitable quick-change chuck is used, the application tool can fall out during operation.
• Before insertion, clean the quick-change chuck and lightly grease the shank.
• The quick-change chuck is automatically locked. 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 use an after-sales service for this.

Changing the Tool SDS plus

Inserting the SDS plus Application Tool (see 

The SDS plus drill chuck enables you to change the application tool easily and conveniently without needing to use additional tools.

• Clean and lightly grease the shank of the application tool.
• Insert the application tool into the tool holder (3) while turning it until it locks automatically.
• Check that it is locked by pulling on the tool.
• 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 does not affect the accuracy of the drill hole, as the drill bit centres itself upon drilling.

Removing the SDS plus Application Tool

• Push the locking sleeve (5) back and remove the application tool.

Removing the Application Tool 

• Use the chuck key to turn the sleeve of the keyed chuck (16) anticlockwise until the application tool can be removed.

Changing the Keyless Quick-Change Chuck 

Hold the retaining ring (21) of the keyless quick-change chuck firmly in place. Open the tool holder by turning the front sleeve (20) 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, mine,rals 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.

Dust Extraction with GDE 16 Plus 

For dust extraction, the GDE 16 Plus (22) is required. The dust extractor must be suitable for the material being worked on. When extracting dry dust or dust that is especially detrimental to health or carcinogenic, use a special dust extractor. actor

Operation

• Products that are only sold in AUS and NZ.
• Use a residual 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.

Setting the Operating Mode

The operating mode of the power tool is selected using the impact/mode selector switch (9). To change the operating mode, press the release button (8) and turn the impact/mode selector switch (9) until it clicks into the required position.

Position for hammer drilling into concrete or stone. Position for drilling without impact in wood, metal, ceramic, and plastic, and for screwdriving. Vario-Lock position for adjusting the chisel position. The impact/mode selector switch (9) will not engage in this position. Position for chisellin

Setting the Rotational Direction

• The rotational direction switch (13) 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.
• Only operate the rotational direction switch (13) when the power tool is not in use.
• Always set the rotational direction to clockwise rotation for hammer drilling, drilling, and chiselling.
• Clockwise rotation: Push the rotational direction switch (13) all the way to the right.
• Anticlockwise rotation: Push the ro

Switching On/Off

• To switch on the power tool, press the on/off switch (7).
• To switch off, release the on/off switch (7).

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 (7) to varying extents. Applying light pressure to the on/off switch (7) results in a low rotational speed/impact rate. Applying increasing pressure to the switch increases the speed/impact rate.

Changing the chiselling position (Vario-Lock)

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 (9) to the “VarioLock” position.
• Turn the application tool to the required chisel position.
• Turn the impact/mode selector switch (9) to the “chiselling” position.
• With this, the tool holder is locked. Set the rotational direction for chiselling to clockwise.

Practical Advice

Setting the drilling depth (see

You can use the depth stop (11) to set the required drilling depth X.

• Press the button for depth stop adjustment (10) and insert the depth stop into the auxiliary handle (12).
• The fluting on the depth stop (11) must face downwards.
• 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 depth. 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 transmission to the drill spindle will be interrupted.
• Switching on when the application tool is blocked may cause high torque reactions.
• Only apply the power tool to the screw/nut when the tool is switched off.
• Rotating tool inserts can slip off. Clean and lightly grease the insertion end of the shank.
• Insert the universal holder into the tool holder while turning it until it locks automatically.
• Insert a screwdriver bit in the universal holder. Only use screwdriver bits that fit the screw head.
• To remove the universal holder, slide the locking sleeve (5) backward and remove the universal holder (23) from the tool .holder

Maintenance and Cleaning

• Pull the plug out of the socket before carrying out any work on the power tool.
• To ensure safe and efficient operation, always keep the power tool and the ventilation slots clean.
• Replace a damaged dust protection cap immediately.
• Clean the tool holder (3) after each use

Technical Data

Only for EU countries

Use the designated collection systems. If disposed of incorrectly, waste electrical and electronic equipment may have harmful effects on the environment and human health, due to the potential presence of hazardous substances.

Only for the United Kingdom

According to The Waste Electrical and Electronic Equipment Regulations 2013 (SI 2013/3113) (as amended) and the Waste Batteries and Accumulators Regulations 2009 (SI 2009/890) (as amended), products that are no longer usable must be collected separately and disposed of in an environmentally friendly manner.

Battery packs/batteries

Please observe the notes in the section on transport. Unscrew the screws on the housing and remove the housing shell in order to remove the battery. To prevent a short circuit, disconnect the connectors on the battery one at a time and then isolate the poles.

Disposal

Valuable raw materials can be reused by recycling. Information about current disposal methods is available from your specialist dealer or local authority. This appliance is labelled in accordance with European Directive 2012/19/EU concerning used electrical and electronic appliances (waste electrical and electronic equipment – WEEE). The guideline determines the framework for the return and recycling of used appliances as applicable throughout the EU.

1. Unplug the appliance from the mains.
2. Cut through the power cord.
3. Close the main gas tap.
4. Dispose of the appliance in an environmentally friendly manner.

Customer Service

• Website: www.bosch-home.com/welcome
• Timings: Monday to Friday 8 am to 8 pm,
• Ph: +49 (0)89 69 339 339

FAQs

Q: What type of tool is the Bosch GBH 240?

Designed for heavy drilling and mild chiselling in concrete, masonry, wood, and metal, the Bosch GBH 240 is a corded rotary hammer drill with an SDS-Plus chuck system.

Q: What does SDS-Plus mean, and why does it matter?

The bit and chuck combination known as SDS-Plus enables rapid, tool-free bit changes and enhanced impact energy transfer, making it perfect for concrete and masonry work.

Q: How powerful is this rotary hammer?

With a 790 W motor and an impact energy of roughly 2.7 J, the GBH 240 provides a solid performance balance for drilling and chiselling in hard materials.

Q: Can it be used for chiselling as well as drilling?

Indeed. It can do light chiselling tasks, such as removing tiles or breaking up thin layers of concrete, in addition to regular drilling. For improved control, many use the Vario-Lock feature to adjust the chisel angle.

Q: Does it have variable speed or direction control?

Indeed. The GBH 240 is adaptable for precision and various drilling situations thanks to its variable speed control, forward/reverse switch, and rotating stop.

Q: Is it comfortable to use for extended work?

This instrument is comparatively light for a professional rotary hammer, weighing about 2.8 kg. For better stability and grip during extended use, it also has an additional handle.

Q: Can I attach a dust extraction system?

Indeed. When drilling, the tool can be used with a variety of dust attachments and extractor systems to keep your workspace tidy and minimize flying debris.

Q: What safety features should I be aware of?

Typically, the GBH 240 has a torque control clutch to lessen kickback in the event of a bit jam, protecting both you and the tool while in operation.