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Hilti DD 110-D Diamond Coring Tool User Manual
User manual for the Hilti DD 110-D diamond coring tool, covering safety, operation, maintenance, and troubleshooting.
Table of contents
Product Overview
The Hilti DD 110-D is an electrically powered diamond core drilling machine designed for hand-held dry drilling in masonry. It is not suitable for drilling in concrete or reinforced concrete. The tool is intended for professional use by trained, authorized personnel.
Safety Instructions
Warning: Read all safety warnings, instructions, and specifications. Failure to follow these instructions may result in electric shock, fire, or serious injury. Always use the auxiliary handle and hold the tool with both hands. Wear personal protective equipment, including eye protection, a hard hat, ear defenders, protective gloves, and a dust mask. Ensure the workplace is well-ventilated and use a dust extraction system when drilling materials that create dust.
Operation
Before starting, ensure the tool is in perfect working order. The tool features a two-gear selector and a BI+ tool holder. For dry drilling, use appropriate diamond core bits. If using a dust extraction system, ensure the suction hose is routed to the rear and away from the core bit. The tool may be equipped with an optional TPS theft protection system, which requires a specific key to unlock.
Maintenance
Always unplug the tool before performing any maintenance. Regularly check all visible parts for damage and ensure all controls function correctly. Carbon brushes must be replaced by authorized personnel when worn. Use only genuine Hilti spare parts and accessories.
Troubleshooting
If the tool fails to perform, check the power supply, the PRCD (if applicable), and ensure the gear selector is fully engaged. If the core bit sticks, use a suitable open-end wrench to free it after unplugging the tool. For persistent issues, contact Hilti Service.
Manufacturer information
Hilti Corporation
Practical help
Common problems
Diamond core bit does not rotate
Ensure the gear selector is fully engaged. If jammed, unplug the tool and use an open-end wrench to free the bit.
Drilling speed decreases
Remove the core, check for bit damage, ensure the correct gear is selected, or sharpen the bit on a sharpening plate.
Service indicator lights up
Carbon brushes are nearing their wear limit. Have them replaced at the next opportunity.
Before use
- Check the work area for concealed electric cables, gas, or water pipes.
- Ensure the side handle is securely tightened.
- Verify the diamond core bit is correctly locked in the tool holder.
- Test the PRCD (if supplied) before each use.
- Ensure the tool is unlocked if equipped with the TPS theft protection system.
Specs in practice
- Protection Class II
- Double insulated tool.
Images and diagrams
- 1: Side handle
- 2: Gear selector
- 3: Gearing section
- 5: Carbon brush cover
- 6: Service indicator
Model compatibility
- Not suitable for drilling in concrete or reinforced concrete.
- Requires specific hole-starting aid for each core bit diameter.
- Compatible with Hilti mobile dust extractors.
Manual page author
David Miller
Documentation analyst
Organizes user manual content into clear summaries, with attention to model details, product context, and everyday usability.