Tools / Power Tools
Bosch GDE 12 Professional Dust Extraction Attachment User Manual
Quick guide for the Bosch GDE 12 Professional dust extraction attachment, covering assembly, drill bit installation, depth adjustment, and maintenance.
Table of contents
Quick guide from the manual
The Bosch GDE 12 Professional is a dust extraction attachment designed for collecting drilling dust when drilling in concrete, brick, stone, ceramic, and tiles. It is compatible with the GBH 185-LI rotary hammer.
Assembly
To attach the device, align the housing guide of the dust extraction attachment (9) with the housing guide of the rotary hammer (11) and slide it on until it audibly engages. To remove, press and hold both release buttons (6) and pull the attachment off.
Operation
Important: Never use the attachment without a filter. Always hold the power tool by its handle and auxiliary handle, not by the dust extraction attachment.
- Drill bit installation: Press the drill bit length adjustment button (3) and pull the guide (2) out. Insert the drill bit through the dust cap (8) and into the chuck according to the power tool's instructions.
- Adjusting guide length: Press button (3) and adjust guide (2) so the drill bit tip is flush with the dust cap (8).
- Adjusting drilling depth: Press button (1) and slide it along the guide (2) to set the desired depth X.
Maintenance and Cleaning
Empty the dust box (13) regularly and after finishing work to maintain optimal suction. Use the viewing window (7) to check the fill level. To clean, remove the HEPA filter (14) and tap it out or brush it with a soft brush. Do not clean the HEPA filter with water or compressed air.
Safety
Do not use the attachment when drilling in metal, as hot metal chips can ignite the dust container. Always wear ear protection.
Manufacturer information
Bosch
Practical help
Common problems
Dust escaping during extraction
Check if the dust cap (8) is worn and replace it if necessary.
Reduced suction performance
Empty the dust box (13) and clean the HEPA filter (14).
LED (4) flashing
The battery capacity is too low for the intended use with the GBH 185-LI; use a battery > 3.0 Ah.
Before use
- Ensure the filter is installed and undamaged.
- Check that the dust cap (8) is in good condition.
- Verify the battery capacity is > 3.0 Ah for GBH 185-LI.
- Ensure the attachment is securely locked onto the rotary hammer.
Specs in practice
- Drilling diameter
- 4–12 mm
- Max. drill bit length
- 165 mm
- Max. drilling depth
- 100 mm
Images and diagrams
- Figure A: Attaching/removing the dust extraction unit.
- Figure B: Inserting/removing the drill bit.
- Figure C: Adjusting the guide length.
- Figure D: Setting the drilling depth.
- Figure E: Changing the dust cap.
Model compatibility
- Compatible only with GBH 185-LI rotary hammer.
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.