Longlife hammer drill bits
Extremely long-lasting, very reinforcement-resistant hammer drill bits with symmetrical, one-piece high-strength carbide head with four cutting edges. Optimum material quality and innovative geometry ensure precise, smooth drilling over the entire service life.
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 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 four cutting edges and four spirals.
Constant drilling speed
Thanks to special head geometry
Thanks to self-centring tip
Please note: With long drill bit lengths, pre-drill with a short drill bit of the same diameter.
Iron reinforcements may only be drilled through with permission from a structural engineer.