Bosch GBH 3-28 E Rotary Hammer Drill User Manual

Taw qhia

The Bosch GBH 3-28 E is a powerful rotary hammer drill designed for demanding drilling and chiseling tasks. Featuring an SDS-plus tool holder, it delivers maximum power with minimal vibrations, ensuring high drilling progress and 20% more chiseling performance compared to other rotary hammers in its class. This manual provides essential information for safe and efficient operation, setup, maintenance, and troubleshooting.

Image of the Bosch GBH 3-28 E rotary hammer drill, showcasing its robust design and ergonomic handle. This tool is engineered for heavy-duty applications.

Cov yam ntxwv tseem ceeb:

• Maximum power output for demanding tasks.
• SDS-plus tool holder with dust protection.
• Reduced vibrations for comfortable operation.
• High drilling progress and superior chiseling performance.

Cov lus qhia kev nyab xeeb

Always observe the following safety precautions when operating the Bosch GBH 3-28 E rotary hammer drill to prevent electric shock, fire, and serious injury.

General Power Tool Ceeb Toom:

• Chaw Ua Haujlwm Kev Nyab Xeeb: Khaws koj thaj chaw ua haujlwm kom huv si thiab teeb pom kev zoo. Cov chaw cluttered lossis tsaus nti caw muaj xwm txheej. Tsis txhob siv cov cuab yeej hluav taws xob hauv cov huab cua tawg, xws li nyob rau hauv lub xub ntiag ntawm cov kua hluav taws xob, roj av, lossis hmoov av.
• Kev Nyab Xeeb Hluav Taws Xob: Cov ntsaws fais fab ntawm cov cuab yeej hluav taws xob yuav tsum phim lub qhov hluav taws xob. Tsis txhob hloov lub ntsaws rau hauv txhua txoj kev. Tsis txhob siv cov ntsaws adapter nrog cov cuab yeej hluav taws xob uas muaj av (av). Tsis txhob kov lub cev nrog cov chaw uas muaj av lossis av xws li cov kav dej, cov cua sov, cov qhov cub hluav taws xob, thiab cov tub yees.
• Kev Nyab Xeeb Tus Kheej: Always wear eye protection. Use hearing protection when operating for extended periods. Wear a dust mask if operations create dust. Dress properly; do not wear loose clothing or jewelry. Keep hair, clothing, and gloves away from moving parts.
• Cov cuab yeej siv thiab kev saib xyuas: Tsis txhob yuam lub cuab yeej fais fab. Siv lub cuab yeej fais fab uas yog rau koj daim ntawv thov. Tshem lub ntsaws ntawm lub qhov fais fab thiab/lossis tshem lub roj teeb ntawm lub cuab yeej fais fab ua ntej ua qhov kev hloov kho, hloov cov khoom siv, lossis khaws cov cuab yeej fais fab.
• Kev Pabcuam: Kom koj lub cuab yeej siv hluav taws xob tau txais kev pabcuam los ntawm tus neeg tsim nyog kho uas siv cov khoom hloov zoo tib yam nkaus xwb. Qhov no yuav ua kom muaj kev ruaj ntseg ntawm lub cuab yeej hluav taws xob.

Ntim Cov Ntsiab Lus

Thaum unpacking, thov xyuas kom meej tias tag nrho cov khoom teev hauv qab no muaj nyob thiab zoo:

• Bosch GBH 3-28 E Rotary Hammer Drill
• Auxiliary Handle
• Qhov tob nres
• Thauj Case
• Tus Neeg Siv Los Siv (cov ntawv no)

Teeb tsa

Before operating the rotary hammer drill, follow these steps for proper setup:

1. Txuas Tus Pab Txhawb Nqa:

1. Loosen lub auxiliary kov los ntawm tig nws counter-clockwise.
2. Slide the handle over the collar of the tool to the desired position.
3. Tighten the handle by turning it clockwise until secure. Ensure it is firmly fixed for safe operation.

2. Inserting the Depth Stop:

1. Insert the depth stop into the designated hole on the auxiliary handle.
2. Adjust the depth stop to the required drilling depth.
3. Secure the depth stop by tightening the auxiliary handle.

3. Inserting SDS-plus Drill Bits/Chisels:

1. Clean the shank of the drill bit or chisel and apply a thin layer of grease.
2. Insert the tool into the SDS-plus tool holder with a slight twisting motion until it locks.
3. Pull on the tool to check if it is securely locked. A slight axial play is normal and necessary for the hammer mechanism.

Cov lus qhia ua haujlwm

Familiarize yourself with the controls and functions before beginning work.

1. Hom Xaiv Hloov:

The GBH 3-28 E features a mode selector switch to choose between different operating modes:

• Drilling (Rotation only): For drilling in wood, metal, ceramics, and plastics without hammer action.
• Hammer Drilling (Rotation with Hammer Action): Rau drilling hauv pob zeb, masonry, thiab pob zeb.
• Chiseling (Hammer Action only): For light chiseling work, such as removing tiles or breaking small sections of concrete.

Nco tseg: Always switch modes only when the tool is switched off to prevent damage to the gearbox.

2. Hloov On / Off:

• To switch on, press the On/Off switch.
• To switch off, release the On/Off switch.
• For continuous operation, press the On/Off switch and then press the lock-on button. To switch off, press the On/Off switch again.

3. Speed Preselection:

The rotary hammer drill features a speed preselection wheel. Adjust the speed according to the material and the size of the drill bit/chisel. Lower speeds are generally used for larger diameters and harder materials.

4. Working with the Tool:

• Drilling: Apply moderate pressure. Let the tool do the work. Excessive pressure will not speed up drilling but can damage the drill bit and the tool.
• Chiseling: Hold the tool firmly with both hands. Guide the chisel along the desired line.
• Kev tiv thaiv overload: The tool is equipped with an overload clutch. If the drill bit jams, the drive to the spindle is interrupted. Always hold the tool firmly with both hands to counteract the reaction forces.

Kev tu

Regular maintenance ensures the longevity and optimal performance of your Bosch GBH 3-28 E rotary hammer drill.

1. Kev ntxuav:

• Always disconnect the plug from the power outlet before any cleaning or maintenance work.
• Khaws cov qhov cua kom huv si kom tiv thaiv kom tsis txhob kub dhau.
• Clean the tool holder regularly. Remove dust and debris.
• So lub cuab yeej lub tsev nrog ib daim ntaub mos mos, damp daim ntaub. Tsis txhob siv cov tshuaj tua kab mob hnyav lossis cov kuab tshuaj.

2. Lubrication:

The SDS-plus tool holder requires periodic lubrication. Apply a thin layer of special grease to the shank of the drill bits and chisels before insertion to ensure smooth operation and reduce wear.

3. Carbon Brushes:

The carbon brushes are wear parts. If the motor sparks excessively or the tool loses power, the carbon brushes may need replacement. This should be performed by an authorized Bosch service center.

4. Cia:

Store the tool in a dry, secure place, out of reach of children. Use the transport case for protection.

Kev daws teeb meem

This section addresses common issues you might encounter with your Bosch GBH 3-28 E rotary hammer drill.

Specifications

Detailed technical specifications for the Bosch GBH 3-28 E Rotary Hammer Drill:

• Hom Tshuaj: Bosch
• Qauv nab npawb: GBH 3-28 E
• Chaw tsim tshuaj paus tus lej: 611239703
• Lub zog Source: Corded Electric
• Voltage: 230 Volts
• Lub zog siab tshaj plaws: 800 Watts
• Tsis-Load Speed: 900 RPM
• Khoom hnyav: 3.5 kg ib
• Khoom siv: Hlau
• Xim: Dub
• Tshwj xeeb nta: Transmission, Long lifespan, Robust design
• Drill Type: Rotary Rauj Drill
• Tool Holder: SDS-plus
• Global Trade Item Number (GTIN): 03165140220255

Warranty thiab Support

Warranty information for the Bosch GBH 3-28 E rotary hammer drill is typically provided with the purchase documentation. Please refer to your sales receipt or the warranty card included in the product packaging for specific terms and conditions.

For technical support, service, or spare parts, please contact Bosch customer service or visit their official website. Ensure you have your model number (GBH 3-28 E) and serial number (if applicable) ready when contacting support.

Bosch Official Webqhov chaw: www.bosch-professional.com