Bosch GBH 7-46 Rotary Hammer Drill User Manual

1. Introducció

This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your Bosch GBH 7-46 Rotary Hammer Drill. The GBH 7-46 DE is a 7 kg rotary hammer with a 1350 W power input, designed for drilling concrete from 12-45 mm and chiseling tasks. It features a no-load speed of 0-250 rpm, an impact rate of 1350-2800 ipm, and an impact force of 4-13 / 15 J, weighing 7.9 kg.

2. Instruccions de seguretat

Always observe general power tool safety warnings and instructions to prevent electric shock, fire, and serious injury.

• Seguretat de l'àrea de treball: Mantingueu la vostra zona de treball neta i ben il·luminada. No feu servir eines elèctriques en atmosferes explosives, com ara en presència de líquids, gasos o pols inflamables.
• Seguretat elèctrica: Els endolls de les eines elèctriques han de coincidir amb la presa de corrent. No modifiqueu mai l'endoll. Eviteu el contacte corporal amb superfícies connectades a terra. No exposeu les eines elèctriques a la pluja o a condicions humides.
• Seguretat personal: Utilitzeu sempre protecció ocular, protecció auditiva i una màscara antipols quan feu servir l'eina. Vestiu-vos correctament; eviteu roba ampla o joies. Assegureu-vos els cabells llargs.
• Ús i cura de l'eina: No forceu l'eina elèctrica. Feu servir l'eina elèctrica adequada per a la vostra aplicació. Desconnecteu l'endoll de la font d'alimentació abans de fer qualsevol ajust, canviar accessoris o guardar eines elèctriques.
• Tornar-s'hi: Be aware of potential kickback, especially when drilling into hard materials or if the bit binds. Maintain a firm grip on the tool.
• Vibració: Prolonged use can cause vibration-related injuries. Take regular breaks and use anti-vibration gloves if available.

3. Producte acabatview

The Bosch GBH 7-46 is a robust rotary hammer drill designed for heavy-duty applications. Familiarize yourself with its main components before operation.

Figure 3.1: Bosch GBH 7-46 Rotary Hammer Drill with an SDS max drill bit installed. This image shows the main body, auxiliary handle, and the chuck for bit insertion.

• Mànec principal: Disseny ergonòmic per a una subjecció i un control còmodes.
• Nansa auxiliar: Provides additional stability and control, especially during heavy drilling or chiseling. It can be rotated for optimal positioning.
• SDS max Chuck: For quick and secure insertion of SDS max drill bits and chisels.
• Interruptor selector de mode: Permet la selecció entre els modes de trepat, trepat amb martell i cincelat.
• Interruptor d'encesa/apagada: Controla l'alimentació de l'eina.
• Parada de profunditat: S'utilitza per ajustar la profunditat de perforació desitjada.

Figura 3.2: lateral view of the Bosch GBH 7-46 Rotary Hammer Drill, highlighting the robust casing and handle design.

4. Configuració

4.1 Fixació de la nansa auxiliar

Afluixeu el cl de la maneta auxiliaramp and slide the handle onto the tool's neck. Adjust its position for comfortable and secure grip, then tighten the clamp fermament.

4.2 Installing SDS max Bits

1. Clean the shank of the SDS max bit and apply a thin layer of grease.
2. Pull back the locking sleeve on the chuck.
3. Insert the bit into the chuck, rotating it slightly until it engages.
4. Release the locking sleeve. Pull on the bit to ensure it is securely locked. The bit should have a small amount of axial play, which is normal for SDS max systems.

4.3 Configuració del topall de profunditat

Insert the depth stop into its designated hole. Adjust it to the desired drilling depth by sliding it in or out, then secure it. The tip of the drill bit should extend beyond the depth stop by the desired drilling depth.

5. Instruccions de funcionament

5.1 Selecció del mode de funcionament

Rotate the mode selector switch to choose the appropriate function:

• Perforació amb martell: Per perforar formigó, maçoneria i pedra amb impacte.
• Ciselat: For chiseling, demolition, and breaking work.
• Rotation Stop (for chiseling): Allows the chisel to be rotated and locked in various positions.

5.2 Inici i aturada

To start the tool, press the On/Off switch. To stop, release the switch. For continuous operation, press the On/Off switch and then press the lock-on button (if available). To release, press the On/Off switch again.

5.3 Consells generals d'operació

• Subjecteu sempre l'eina fermament amb les dues mans.
• Apply steady, even pressure. Do not lean into the tool excessively; let the hammer mechanism do the work.
• When drilling, ensure the drill bit is perpendicular to the workpiece.
• For chiseling, position the chisel correctly before starting.
• Be aware of hidden electrical cables, gas pipes, and water pipes. Use a suitable detector before drilling or chiseling.

Figure 5.1: A worker demonstrating the use of the Bosch GBH 7-46 Rotary Hammer Drill for chiseling concrete, wearing appropriate safety gear.

Figure 5.2: The Bosch GBH 7-46 Rotary Hammer Drill positioned on a concrete surface, ready for heavy-duty work.

6. Manteniment

Regular maintenance ensures the longevity and optimal performance of your rotary hammer drill. Always disconnect the tool from the power supply before performing any maintenance.

• Neteja: Keep the ventilation openings clean to prevent overheating. Regularly clean the tool housing with a soft, damp tela. No utilitzeu dissolvents.
• Manteniment del mandril: Clean the SDS max chuck regularly and apply a small amount of special grease to the bit shank to ensure smooth operation and prevent wear.
• Escombretes de carbó: If applicable, have carbon brushes checked and replaced by a qualified service technician when worn.
• Inspecció del cable: Regularly inspect the power cord for damage. If damaged, have it replaced by an authorized service center.

7. Solució De Problemes

Before attempting any repairs, always disconnect the tool from the power supply.

8. Especificacions

9. Garantia i Suport

For warranty information, service, or technical support, please refer to the documentation provided with your purchase or visit the official Bosch weblloc web. Conserveu el comprovant de compra per a reclamacions de garantia.

Bosch oficial Weblloc: www.bosch-pt.com