Tools / Power Tools
Hilti DD 110-D Diamond Core Drilling Machine User Guide
User guide for the Hilti DD 110-D diamond core drilling machine, covering safety, operation, maintenance, and troubleshooting.
Table of contents
Manual images
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The Hilti DD 110-D is an electrically powered diamond core drilling machine designed for hand-held dry drilling in masonry using diamond core bits and diamond socket cutters. It is not suitable for drilling in concrete or reinforced concrete.
Safety
General Safety: Always wear personal protective equipment, including eye protection, a hard hat, ear defenders, protective gloves, protective footwear, and light respiratory protection. Ensure the work area is clean and well-lit. Do not operate in explosive atmospheres.
Electrical Safety: Always use the supplied PRCD (Portable Residual Current Device). Check the PRCD before every use. If the supply cord or extension cord is damaged, do not touch it and disconnect it from the power supply immediately.
Operation
Preparation: Adjust the side handle to the desired position. Ensure the core bit is compatible with the chuck system and securely locked.
Drilling: When using a two-part hole-starting aid, do not run the machine without it being pressed against the work surface. Start drilling at a low speed until the bit is centered, then increase pressure. If the core bit sticks, the clutch will slip until the machine is switched off.
Dust Removal: Whenever possible, use a mobile dust extractor. If drilling without dust removal, use slotted core bits and wear suitable breathing protection.
Maintenance
Care: Keep the tool clean and free of oil and grease. Clean air vents with a dry brush. Do not use silicone-based cleaning agents.
Maintenance: Repairs to electrical components must only be carried out by trained electrical specialists. Replace carbon brushes when the service indicator lights up.
Manufacturer information
Hilti Corporation
Practical help
Common problems
Service indicator lights up
Carbon brush wear limit is almost reached. Have them replaced at the next opportunity.
Machine does not achieve full performance
Check for undervoltage in the power network or generator; check the length of the extension cord.
Core bit does not rotate
Ensure the gear selector is fully engaged. If jammed, unplug the machine and use an open-end wrench to free the bit.
Drilling speed decreases
Check if the core bit is polished (sharpen on a sharpening plate), if the gear is correct, or if the bit is defective.
Before use
- Check the work area for concealed electric cables, gas, or water pipes.
- Test the PRCD before every use.
- Ensure the side handle is securely tightened.
- Verify that the core bit is clean and securely locked in the chuck.
- Check the supply cord and extension cords for damage.
Specs in practice
- Protection Class II
- Double insulated, no earth connection required.
Images and diagrams
- 1: Side handle
- 2: Gear selector
- 3: Gearing section
- 5: Carbon brush cover
- 6: Service indicator
Model compatibility
- Not suitable for concrete or reinforced concrete.
- Do not drill materials that produce electrically conductive dust (e.g., magnesium).
- Use only genuine Hilti core bits and DD 110-D accessories.
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.