Bosch GSR 18V-55 / GSB 18V-55 Professional Cordless Drill Instruction Manual
Quick guide for the Bosch GSR 18V-55 and GSB 18V-55 cordless drills, covering setup, operation, safety instructions, and maintenance.
Table of contents
Quick guide from the manual
This manual provides essential safety and operating instructions for the Bosch GSR 18V-55 and GSB 18V-55 professional cordless drills. Always remove the battery before performing maintenance, changing tools, or transporting the device to prevent accidental activation.

Device Description
The tool is designed for driving and loosening screws and for drilling in wood, metal, ceramic, and plastic. The GSB model is additionally designed for impact drilling in brick, masonry, and stone.
Operation
Inserting the battery: Push the charged battery into the base of the tool until it locks securely.
Setting rotational direction: Use the rotational direction switch to change the direction. Right rotation is for drilling and driving screws; left rotation is for loosening screws and nuts.
Setting the operating mode: Use the torque/mode presetting ring to select between drilling, screwdriving, or impact drilling (GSB model only).
Speed and Torque: Speed is controlled by the pressure applied to the on/off switch. Torque can be preselected in 20 stages for screwdriving mode.
Maintenance and Cleaning
Keep the power tool and ventilation slots clean for safe and efficient operation. For repairs or spare parts, contact your local Bosch service center or visit www.bosch-pt.com.
Safety
Always wear ear protection when impact drilling. Hold the tool by insulated gripping surfaces when performing operations where the cutting accessory or fasteners may contact hidden wiring. Avoid dust accumulation at the workplace, as dust can easily ignite.
Official resources from the manual
Manufacturer information
Bosch
Practical help
Common problems
Check if the battery is charged and properly inserted. If the battery is empty, the protective circuit will switch off the tool.
The tool may be overloaded or the temperature is outside the permitted range. Allow the tool to cool down.
The battery may be defective and needs to be replaced.
Before use
- Ensure the battery is fully charged.
- Check that the correct tool bit is inserted and tightened in the chuck.
- Set the correct rotational direction.
- Select the appropriate operating mode (drilling, screwdriving, or impact drilling).
- Ensure the work area is well-ventilated.
Specs in practice
- Rated voltage
- 18V, indicating the battery system compatibility.
- No-load speed
- 0-460 min-1 (1st gear) and 0-1800 min-1 (2nd gear) for different drilling/screwdriving tasks.
Images and diagrams
- The manual includes diagrams showing the tool components: tool holder, keyless chuck, torque/mode rings, gear selector, and battery release button.
- Figure A illustrates the tool change procedure.
- Figure B shows the rotational direction switch settings.
Model compatibility
- Compatible with Bosch GBA 18V and ProCORE18V battery systems.
- Compatible with Bosch GAL 18, GAX 18, and GAL 36 series chargers.
Manual page author
Michael Turner
Technical manual editor
Reviews PDF manuals for structure, safety notes, and practical product details so readers can find the right information quickly.