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Hammer drill bit, Longlife Quadro-L with SDS-plus drill chuck
Reinforcement-resistant hammer drill bits with symmetrical, one-piece high-strength cemented carbide head with 4 cutting edges. Material quality and geometry ensure precise, smooth drilling.
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Variants
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No hooking in and running off centre
The symmetrical 4 x 90° cutting edge geometry prevents the hooking in or running off centre of the drill bit when striking reinforcement or hard pebbles in concrete.
Perfect drilling properties
- Thanks to head geometry that is tailored to the drill bit diameter.
- 5-16 mm: One-piece carbide element (Fig. 1) for a high degree of stability thanks to the maximised surface for connection with the steel body
- 18-32 mm: Multi-piece cemented carbide element (Fig. 2) for faster drilling progress and improved buffering of the torsional forces thanks to the trisection design
Optimum guidance in drilled hole
Thanks to the drill geometry with 4 cutting edges and 4 spirals.
Constant drilling speed
Thanks to special head geometry
Precise drilling
Thanks to self-centring tip
Iron reinforcements may only be drilled through with permission from a structural engineer. With long drill bit lengths, pre-drill using a short drill bit of the same diameter.
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