Tools / Power Tools
User Manual for Bosch GBH 18V-34 CF Professional Cordless Rotary Hammer
Quick guide for the Bosch GBH 18V-34 CF Professional cordless rotary hammer. Includes setup, operating modes, safety instructions, maintenance, and troubleshooting.
Quick answers from the manual
Quick answer
- The Bosch GBH 18V-34 CF is a cordless rotary hammer for drilling in concrete, masonry, and stone, as well as light chiselling. It features Bluetooth connectivity, Kickback Control, and an adjustable user interface. p. 7, 8, 13
Key actions
- Insert battery p. 9, 11
- Select operating mode p. 11
First start
- Charge battery fully, attach auxiliary handle, and select the appropriate operating mode using the combi switch. p. 9, 10, 11
Problems and fixes
Rapid shut-off triggered
Release on/off switch and press again.
p. 12Maintenance and reset
- Clean tool holder after each use. p. 14
Technical specifications
| Parameter | Value | Meaning | Pages |
|---|---|---|---|
| Impact Energy | 5.8 J | Force per stroke | p. 8 |
Where to find it in the PDF
- Product Overview p. 3
Table of contents
Manual images
Click an image to enlargeImportant Information from the Manual
The Bosch GBH 18V-34 CF Professional is a high-performance cordless rotary hammer designed for hammer drilling in concrete, masonry, and stone, as well as light to medium-duty chiselling. It features Bluetooth connectivity for data transfer and settings, Kickback Control for user safety, and an intuitive user interface for mode selection.
Product Description
The tool features an SDS-plus tool holder, vibration damping, and a user interface that displays battery status, temperature, and tool status. It supports three main working modes: Auto, Soft, and Favorite, which can be configured via a smartphone app.
Assembly
- Battery: Slide the charged battery into the tool until it locks securely.
- Auxiliary Handle: Always use the auxiliary handle for safe operation. Rotate the lower gripping end to adjust the angle.
- Depth Stop: Press the depth stop adjustment button and insert the depth stop into the auxiliary handle to set the desired drilling depth.
- Chuck Change: The tool comes with an SDS-plus chuck and a keyless quick-change chuck. Pull back the locking ring to remove or insert the chuck.
Operation
Operating Modes
Use the combi switch to select the operating mode:
- Hammer Drilling: For concrete or stone.
- Drilling (without impact): Use the keyless quick-change chuck for wood, metal, ceramic, or plastic.
- Chiselling: For light to medium-duty work.
- Vario-Lock: Allows you to adjust the chisel to the optimal working position.
Switching On/Off
Press the on/off switch to start the tool. The worklight illuminates the area automatically. Release the switch to stop.
Kickback Control
If the tool suddenly rotates around the drilling axis, the Kickback Control system will automatically shut off the tool to protect the user. The rapid shut-off indicator will light up.
Maintenance
- Cleaning: Keep the tool and ventilation slots clean. Clean the tool holder after each use.
- Dust Cap: Replace a damaged dust protection cap immediately.
- Battery Care: Protect the battery from moisture and heat. Clean ventilation slots with a soft, dry brush.
Manufacturer information
Bosch
Practical help
Common problems
Tool does not start
Check battery charge, ensure battery is fully inserted, and verify the lock-on button is not engaged.
Rapid shut-off (Kickback Control) triggered
Release the on/off switch and press it again to restart the tool.
Battery charge indicator not lighting up
The battery may be defective and needs replacement.
Before use
- Ensure the battery is fully charged.
- Attach the auxiliary handle securely.
- Select the correct chuck (SDS-plus or keyless).
- Set the combi switch to the desired operating mode.
- Check the dust protection cap for damage.
Specs in practice
- Impact Energy
- 5.8 Joules, representing the force of each hammer blow.
- Rated Voltage
- 18V, compatible with Bosch 18V battery system.
Images and diagrams
- Page 3 shows the main components including the chuck, mode switch, and user interface.
- Page 4 shows assembly steps for the auxiliary handle and depth stop.
- Page 5 shows the user interface and mode selection.
Model compatibility
- Compatible with Bosch 18V batteries (GBA 18V, ProCORE18V).
- Requires GCY 42 Bluetooth module for connectivity features.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.