Tools / Power Tools
Operating Instructions for Hilti DD 110-W Diamond Core Drilling Machine
Comprehensive operating instructions for the Hilti DD 110-W diamond core drilling machine, covering safety, setup, operation, maintenance, and troubleshooting.
Table of contents
Product Overview
The Hilti DD 110-W is a professional-grade, electrically powered diamond core drilling machine. It is designed for hand-held dry drilling in masonry and hand-held wet drilling in concrete and mineral materials. The tool features a two-gear transmission and is intended for use by trained, authorized personnel in construction, renovation, and workshop environments.
Safety Information
Always read and understand all safety warnings and instructions before use. The tool must be operated with a fully functional Ground Fault Circuit Interrupter (PRCD). Never operate the machine without the side handle, and always maintain a secure stance with both feet. The tool produces high torque; be prepared for sudden stalling. Respiratory protection is mandatory when working without a dust extraction system. Overhead wet drilling is strictly prohibited.
Operation
Before starting, ensure the work area is clear of concealed electrical cables or gas/water pipes. The tool can be equipped with an optional TPS theft protection system, which requires a specific key to unlock. For dry drilling, use a suitable dust extraction system to prevent dust buildup and imbalance. For wet drilling, connect the water supply and ensure the system is leak-free. Always select the appropriate gear based on the core bit diameter.
Maintenance
Regularly check the supply cord and extension cords for damage. Keep air vents clean using a dry brush. The tool features a service indicator that lights up when carbon brushes are nearing their wear limit. Carbon brush replacement must be performed by trained personnel. Always unplug the tool before performing any maintenance or cleaning tasks. Use only genuine Hilti spare parts and consumables.
Troubleshooting
If the tool fails to perform, check the power supply, the PRCD status, and the gear selector engagement. If the core bit becomes jammed, disconnect the power and use an open-end wrench to manually free it. If the service indicator lights up, the carbon brushes need replacement. For persistent issues, contact Hilti Service.
Manufacturer information
Hilti Corporation
Practical help
Common problems
Service indicator lights up
Carbon brush wear limit is reached; have them replaced at the next opportunity.
Diamond core bit does not rotate
Ensure the gear selector is fully engaged or the bit is not jammed in the material.
Drilling speed is decreasing
Check for stuck core, wrong gear selection, insufficient contact pressure, or a polished core bit that needs sharpening.
Water leaks from chuck during operation
Ensure the core bit is securely tightened, clean the connection, or replace the seal.
Before use
- Test the PRCD before each use.
- Check the supply cord and extension cords for damage.
- Ensure the side handle is securely attached.
- Verify the core bit is compatible and correctly installed.
- Check that the work area is free of concealed hazards (cables, pipes).
- Ensure the water supply (if wet drilling) is connected and leak-free.
Specs in practice
- Speed (1st/2nd gear)
- 740/min and 1,580/min; select based on core bit diameter.
- Protection Class I
- Requires an earthed/grounded power outlet.
- Permissible water pressure
- Maximum 6 bar; do not exceed to prevent hose damage.
- Ambient temperature
- Operating range between -17°C and 60°C.
Images and diagrams
- 1: Side handle
- 2: Gear selector
- 3: Gearing section
- 7: On/off switch
- 9: Supply cord with PRCD
Model compatibility
- Use only genuine Hilti core bits and accessories.
- Overhead wet drilling is strictly prohibited.
- Drilling into materials producing conductive dust (e.g., magnesium) is not permitted.
- If using a generator, its power output must be at least twice the tool's rated input power.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.