DD 250 Core drill
Advanced heavy-duty diamond drilling tool for very small to large diameters of 12-450 mm (1/2" - 18”)
- Diameter range: 15/32 - 17-23/32 in
- Base material: Concrete
- Operation mode: Rig-based drilling system
Technical Data
Diameter range
15/32 - 17-23/32 in
Base material
Concrete
Operation mode
Rig-based drilling system
Number of gears
4
No load RPM
gear 1: 240 rpm; gear 2: 580 rpm; gear 3: 1160 rpm; gear 4: 2220 rpm
Weight according EPTA-Procedure 01/2003 without battery
33.7 lb
Weight of complete system
81 lb
Dimensions (LxWxH)
24.8 x 7.5 x 8.5 in
A-weighted emission sound pressure level
93 dB (A) 1
Tri. vibr. value for drilling into concrete (wet) with diamond core A (ah,DD)
2.5 m/s²
Tri. vibr. value for drilling into concrete (wet) (ah,DD) - Corebit A
HCL/HCS
Corner accessibility
2 in
- According to the applicable product standard (see the Operating Instruction for more details)
Documents
Features & Applications
Features
- Air-cooled, heavy-duty drive unit with four-speed gearing and convenient controls
- Optional BL quick-release connection lets you change core bits in seconds - no tools required (keyless system)
- Hole-starting function for large-sized core bits
- Real-time information display – digital spirit level, gear selector, power control function, trip counter, running time counter and easily understood service messages
- Designed for versatility – suitable for an extremely wide range of applications
Applications
- Penetrations for ducts, pipes and cables
- Openings for ventilation
- Stitch drilling for breaches
- Coring holes for service entries
- Coring holes in ceilings, walls and floors without hammering and vibration
For approval or certificate information, please see individual items.
Services
Hilti Tool Service
- Service is free of charge up to 2 years, including wear & tear, pick-up and delivery
- 1 or free, in and out of the repair center the same day or repair is free of charge
- Product warranty against parts and manufacturing irregularities for 20 years
- One click or call is all it takes – we do the rest
- No registration or proof of purchase ever required
Fleet Management
- Monthly usage fee covering all tool, service and repair costs helping to ensure absolute cost control and back-office efficiency.
- Theft coverage helps to reduce financial risk and unexpected expenses.
- Individual labels and online visibility provide tool fleet transparency.
- High-performing tools and latest technology help to increase jobsite productivity.
Related Products
A single unit for the supply of cooling water as well as the collection and filtration of wastewater from diamond drilling systems
Drill stand for heavy duty Hilti coring machines (see technical data for tool compatibility)
Drill stand for heavy duty Hilti coring machines (see technical data for tool compatibility)
Product Videos
Consulting & Support
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