Tools / Power Tools
Bosch GBH 187-LI Professional Rotary Hammer Instruction Manual
Quick guide for the Bosch GBH 187-LI Professional cordless rotary hammer. Includes setup, operation modes, tool changing, connectivity features, and safety instructions.
Table of contents
Quick guide from the manual
This document provides essential operating instructions for the Bosch GBH 187-LI Professional cordless rotary hammer. It covers safety, tool setup, operation modes, and connectivity features. Always ensure the battery is removed before performing any maintenance or accessory changes.
Device Description
The GBH 187-LI is a cordless rotary hammer designed for hammer drilling in concrete, brick, and stone, as well as light chiseling work. It is also suitable for drilling without impact in wood, metal, ceramic, and plastic, and for screwdriving.
Operation Modes
Use the impact/rotation stop switch to select the desired mode:
- Hammer Drilling: For concrete or stone.
- Drilling/Screwdriving: For wood, metal, ceramic, and plastic.
- Vario-Lock: To adjust the chisel position.
- Chiseling: For light demolition work.
Note: Only change the operation mode when the tool is switched off.
Tool Changing
- SDS-plus: Insert the accessory into the tool holder until it locks automatically. Pull the accessory to check for secure locking. To remove, push the locking sleeve back.
- Cylindrical/Hexagonal Shanks: Use only in the 'Drilling' mode. Open the chuck, insert the tool, and tighten the front sleeve until a clear click is heard.
Connectivity Features
The tool features Bluetooth Low Energy technology. Use the Bosch Toolbox or Bosch BeConnected app on your smartphone to register the tool, check status, and customize settings in 'Favorite' mode. If the tool is not recognized, ensure the distance is appropriate and the internal button cell battery is not depleted.
Safety and Maintenance
- Always wear ear protection and safety goggles.
- Hold the tool with both hands during operation.
- If the tool blocks, the safety clutch will trigger. Switch off the tool immediately.
- The tool features KickBack Control for improved user protection. If the tool rotates unexpectedly, it will shut down automatically.
- Keep ventilation slots clean. Replace damaged dust caps immediately via authorized service.
Manufacturer information
Bosch
Practical help
Common problems
Tool does not start or stops unexpectedly
Check battery charge level. If the tool is overheated, allow it to cool down. If the motor is blocked, ensure the battery is charged or replace it.
Bluetooth connection fails
Reduce the distance between the smartphone and the tool. Ensure the internal button cell battery for the Bluetooth module is not empty.
KickBack Control triggered
Release the on/off switch and press it again to restart the tool.
Before use
- Ensure the battery is fully charged.
- Check that the auxiliary handle is securely tightened.
- Verify the correct operation mode is selected.
- Ensure the dust cap is in good condition.
- Check that the accessory is properly locked in the tool holder.
Specs in practice
- Impact Energy (2.4 J)
- The force of each individual hammer blow, determining drilling efficiency in concrete.
- Max Drilling Diameter (24 mm Concrete)
- The maximum recommended hole size for optimal performance in concrete.
Model compatibility
- Compatible with GBA 18V and ProCORE18V batteries.
- Use only with SDS-plus accessories for hammer drilling/chiseling.
- Bluetooth Low Energy Module requires a smartphone with Android 6.0+ or iOS 11+.
Manual page author
David Miller
Documentation analyst
Organizes user manual content into clear summaries, with attention to model details, product context, and everyday usability.