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Bosch GWS 18V-11 / 18V-11 S Cordless Angle Grinder User Guide
A comprehensive user guide for the Bosch GWS 18V-11 and GWS 18V-11 S cordless angle grinders, covering safety instructions, assembly, operation, maintenance, and technical specifications.
Table of contents
Quick guide from the manual
This manual provides essential safety and operating instructions for the Bosch GWS 18V-11 and GWS 18V-11 S cordless angle grinders. Key safety measures include wearing personal protective equipment (safety goggles, dust mask, hearing protection), ensuring the tool is switched off before inserting the battery, and using the correct protective guard for the specific application (grinding, cutting, or brushing). Always ensure the tool is held firmly with both hands and that you maintain a stable footing.
Device Description
The GWS 18V-11 and 18V-11 S are cordless angle grinders designed for cutting, grinding, and brushing metal and stone, as well as drilling in stone with diamond core bits without water. The 18V-11 S model features a speed preselection thumbwheel.
Assembly
Before any work on the tool, remove the battery. Mount the protective guard by aligning the coding cams with the holder on the tool, pressing the unlocking lever, and rotating until it clicks into place. The auxiliary handle (standard or vibration-damping) must be screwed into the gear head on either the left or right side. For specific applications, mount the appropriate guard (e.g., extraction guard for grinding or cutting guard with guide block) and hand guard as required.
Operation
To start the tool, push the on/off switch forward. To lock it, press the front of the switch down until it clicks. To switch off, release the switch or press the back of it if locked. The tool features KickBack Control, restart protection, a run-out brake, and drop control for enhanced safety. For the 18V-11 S model, use the speed preselection thumbwheel to adjust the speed according to the material and application.
Maintenance and Cleaning
Always remove the battery before performing maintenance. Keep the tool and ventilation slots clean for safe operation. Store and handle accessories with care. For repairs, contact an authorized Bosch service center.
Safety and Disposal
Protect the battery from heat, fire, and moisture. Dispose of power tools, batteries, and packaging in an environmentally friendly manner, following local regulations.
Manufacturer information
Bosch
Practical help
Common problems
Tool does not start
Check if the battery is inserted correctly and charged. Ensure the on/off switch is in the correct position.
Excessive vibration
Check if the grinding/cutting disc is mounted correctly and is not damaged or worn.
Battery charge indicator does not light up
The battery may be defective and needs to be replaced.
Before use
- Ensure the battery is fully charged.
- Check that the correct protective guard is mounted for the intended application.
- Verify that the grinding/cutting disc is in good condition and correctly mounted.
- Ensure the auxiliary handle is securely attached.
- Wear appropriate personal protective equipment (safety goggles, gloves, etc.).
Specs in practice
- Rated voltage
- 18V DC, compatible with Bosch 18V battery system.
- Speed adjustment range (18V-11 S)
- 3000–9000 min⁻¹ for variable speed control.
Model compatibility
- Compatible with Bosch GBA 18V and ProCORE18V batteries.
- Use only chargers listed in the technical data section.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.