Tools / Power Tools
Bosch GDE 28 D Professional Dust Extraction Attachment User Manual
Quick guide for the Bosch GDE 28 D Professional dust extraction attachment. Includes assembly, operation, filter cleaning, dust box emptying, and maintenance instructions.
Table of contents
Quick guide from the manual
The Bosch GDE 28 D Professional is a dust extraction attachment designed for drilling in concrete and masonry. It is compatible exclusively with the GBH 18V-28 DC rotary hammer. It is intended for occasional drilling with smaller diameters. For long-term use or large diameters, use GDE 16 Plus or GDE 68 with an external vacuum cleaner.
Assembly
Align the guide bore (13) of the rotary hammer with the housing guide (12) of the dust extraction attachment and slide it on until it audibly engages. To disconnect, press and hold the release button (8) 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. Ensure a stable footing while working.
Drill bit insertion
Press the drill bit length adjustment button (6) and pull the guide (5) out. Insert the drill bit through the dust cap (3) and into the chuck according to the power tool's instructions.
Adjusting guide length
Press the button (6) and adjust the guide (5) so the drill bit tip is flush with the dust cap (3).
Adjusting drilling depth
Press the depth stop adjustment button (4) and slide it on the guide (5) to set the required depth X.
Maintenance and Cleaning
Empty the dust box (9) regularly. Hold the tool horizontally and run it for a few seconds to clear the extraction channel. Press the release button (7) to remove the dust box, open the flap (15), and empty it. Clean the HEPA filter (16) by tapping it or using a soft brush. Do not use compressed air. Use the mechanical filter cleaning wheel (10) regularly by turning it clockwise until it clicks at least three times.
Manufacturer information
Bosch
Practical help
Common problems
Dust escaping through the extraction brush
Replace the dust cap (3)/(2) if the wall contact surface shows clear signs of wear.
Reduced suction power
Empty the dust box (9) and perform mechanical filter cleaning using the hand wheel (10).
Before use
- Ensure the filter is installed and undamaged.
- Select the correct dust cap (3 for 4-16mm, 2 for 16-28mm).
- Check that the dust box is empty.
- Ensure the attachment is audibly engaged on the rotary hammer.
Specs in practice
- Drilling diameter
- 4-28 mm, depending on the dust cap used.
- Max. drill bit length
- 265 mm (requires extension (1)).
- Max. drilling depth
- 100 mm.
Images and diagrams
- A1-A2: Mounting the attachment to the rotary hammer.
- B: Inserting/removing the drill bit.
- C: Adjusting the guide length.
- D: Setting the drilling depth.
- E: Changing the dust cap and extension.
Model compatibility
- Compatible only with GBH 18V-28 DC rotary hammer.
- Not for use when drilling in wood, stone, metal, or plastic.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.