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Bosch GWS 12V-76 Professional Angle Grinder User Guide

Quick guide for the Bosch GWS 12V-76 Professional Angle Grinder, covering safety instructions, assembly, operation, and maintenance.

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Quick guide from the manual

The Bosch GWS 12V-76 is a cordless angle grinder designed for cutting metal, stone, plastic, composite materials, and wood, as well as for roughing metal without water. Always use the correct protective guard for the specific application.

Overview of the GWS 12V-76 components
Overview of the GWS 12V-76 components

Safety instructions

  • Always wear safety goggles.
  • Ensure the protective guard is securely attached and adjusted for maximum safety.
  • Do not use damaged accessories; inspect them before each use.
  • Maintain a firm grip and proper body position to resist kickback forces.
  • Use the tool only for its intended purpose; do not use it for sanding, wire brushing, or polishing.

Assembly

Before any work on the tool (maintenance, tool change, etc.), remove the battery. To mount the protective guard, insert the cutting guard (10) onto the grinding guard (7) until it clicks. To mount abrasive tools, clean the grinding spindle (8), push the spindle lock button (2) forward, and turn the tool to lock the spindle. Use the hex key (13) to secure the clamping bolt with washer (11).

Step-by-step assembly of the grinding/cutting disc
Step-by-step assembly of the grinding/cutting disc

Operation

To start the tool, push the on/off switch (3) forward. To lock it, push the switch forward and down until it clicks. To switch off, release the switch or press it briefly backward and down. If the tool becomes electrostatically charged, the electronics will switch it off; press the switch again to restart.

Maintenance and cleaning

Always keep the tool and ventilation slots clean for safe operation. Remove the battery before any maintenance work.

Manufacturer information

Bosch

Brand profile

Practical help

Common problems

Tool switches off automatically

The tool may be overloaded or the battery temperature is out of range. Switch off, let the battery cool down, and restart.

LED indicator flashing red

The tool is blocked. Pull it out of the workpiece and it will continue to work once the blockage is cleared.

LED indicator lit permanently red

Battery temperature is too high. Switch off the tool and let the battery cool down.

Before use

  • Check that the abrasive tool is correctly mounted and can turn freely.
  • Perform a test run of at least 1 minute without load.
  • Ensure the protective guard is correctly installed and adjusted.
  • Check the battery charge level.
  • Ensure the workpiece is securely clamped.

Specs in practice

Rated no-load speed
19500 min-1; the maximum speed of the tool without load.
Max. grinding disc diameter
76 mm; do not exceed this size.
Mounting diameter
10 mm; the size of the hole in the disc.

Images and diagrams

  • (1) Direction of rotation arrow
  • (2) Spindle lock button
  • (3) On/off switch
  • (7) Protective guard for grinding
  • (10) Protective guard for cutting

Model compatibility

  • Use only GBA 12V series batteries.
  • Use only GAL 12... or GAX 18... 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.