Extreme twist drill bit
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Extreme twist drill bit
The drill bit for the toughest materials
Available in 17 versions
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Exclusively for trade customers
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The drill bit for the toughest materials
DIN 1897, HSS-Co Al-Cr, coated
Application area:
For stationary machines, DIN 1897 type N extra-short, right-hand cutting, ground, aluminium-chromium coating, HSS-Co 5 %
Field of Application:
Suitable for HARDOX® 450 (for HARDOX® 500 and 550, preliminary testing is required) and for very hard materials up to 1400 N/mm² such as excavator shovels, truck superstructures, snowploughs, agricultural machines, armour plating etc.
Advantages:
135° turbo cutter with cross grinding
- Precise tapping
- No centre punching necessary
- Optimal drilling progress
- Drilling on curved surfaces
Reinforced drill core
- Greater cutting forces and stability
- Longer service life
- Maximum breakage resistance with all diameters
- Elasticity according to the latest findings
Surface coating
- Aluminium-chromium coating
- Increased surface hardness
- Prevents built-up edges
- Enhances thermal stability
Advice:
Prerequisites for drilling HARDOX®:
Short drill bit construction to minimise vibration; stability is key.
Do not use in hand drills!
Minimise the distance between the drill bit and the workpiece and clamp the workpiece firmly.
Reduce the feed rate shortly before drilling through and ensure recommended feed rate and cutting speed are maintained.
Select RAL-colour code
!! NOTE: On-screen visualisation of the colour differs from real colour shade!!