Tools / Power Tools
Bosch GWS Professional 18V-11 | 18V-11 S Angle Grinder User Guide
Quick guide for the Bosch GWS Professional 18V-11 and 18V-11 S angle grinders, covering safety, assembly, operation, and maintenance.
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This document provides essential information for the safe and efficient operation of the Bosch GWS Professional 18V-11 and 18V-11 S angle grinders. Always read the full safety instructions before use. Ensure the battery is removed before any maintenance or accessory changes to prevent accidental startup.
Device Description
The angle grinder is designed for cutting and brushing metal and stone, roughing metal, and drilling in stone with diamond core cutters without water. The 18V-11 S model includes a speed preselection thumbwheel.
Assembly
Protective Guard: Align the coding cams of the guard with the holder on the tool. Press and hold the unlocking lever, push the guard onto the spindle collar, and rotate until it clicks into place. Ensure the guard is positioned to prevent sparks from flying towards the operator.
Auxiliary Handle: Screw the handle onto the right or left side of the machine head. Do not operate the tool without the handle.
Mounting Abrasive Tools: Clean the grinding spindle and all parts to be mounted. Use the spindle lock button to lock the spindle. Use the quick-clamping nut for discs up to 125 mm diameter. Ensure the printed side of the nut does not face the grinding disc.
Operation
Switching On/Off: Push the On/Off switch forward to start. To lock, push the switch forward and down until it clicks. To switch off, release the switch or push the back down if locked.
Speed Preselection (18V-11 S): Use the thumbwheel to select the required speed based on the material and application (e.g., lower speed for brushing, higher for cutting).
Safety Features
- KickBack Control: Electronically interrupts power if the tool suddenly kicks back.
- Restart Protection: Prevents uncontrolled startup after power interruption.
- Run-out Brake: Electronically stops the tool within seconds.
- Drop Control: Switches the tool off if it hits the floor after a fall.
Maintenance
Keep the tool and ventilation slots clean for safe operation. Store accessories carefully. For repairs, contact Bosch customer service.
Manufacturer information
Bosch
Practical help
Common problems
Tool does not start
Check if the battery is charged and correctly inserted. Ensure the On/Off switch is in the correct position.
Excessive vibration
Check if the abrasive tool is correctly mounted and not damaged or worn.
Quick-clamping nut is stuck
Do not use force. Use a two-pin spanner to loosen it.
Before use
- Ensure the battery is charged.
- Check that the correct protective guard is mounted for the intended application.
- Verify the abrasive tool is correctly mounted and rotates freely.
- Perform a test run for at least one minute without load.
- Ensure the auxiliary handle is securely attached.
Specs in practice
- Spindle thread M14
- The standard thread size for mounting accessories.
- Speed preselection
- Allows adjusting the speed for different materials (only on 18V-11 S).
Images and diagrams
- Page 3: Shows the assembly of the protective guard (A, B) and the cover for cutting (C, D).
- Page 4: Exploded view of the tool components and accessory mounting sequence.
- Page 6: Instructions for rotating the gear head (E).
Model compatibility
- Compatible with Bosch GBA 18V and ProCORE18V batteries.
- Use only chargers listed in the technical data.
- Extraction guard (9) is not suitable for machining metal.
Manual page author
David Miller
Documentation analyst
Organizes user manual content into clear summaries, with attention to model details, product context, and everyday usability.