A small drill for the highest degree
of performance and cost-effectiveness

Short machining time

This best drill bit for steel allows the highest drilling speeds (cutting speeds and feed rates)
No or minimum chip removal (Pecking)

The carbide industrial drill with high-performance coating
The helical flutes of this tungsten carbide drill for steel provide for optimal chip flow
In comparison to HSS drills, CrazyDrill Steel has a tool life that is 10 to 20 times longer. Cutting speed of CrazyDrill Steel vs. the cutting speed of an HSS drills: At the same feed rate, CrazyDrill Steel permits considerably higher cutting speeds. This means machining that is significantly faster than with HSS drills is possible

A high degree of reliability is ensured due to the self-centering of CrazyDrill Steel.
Optimized cutting geometry with edge preparation which means no cutting edge breakage.
The 140° tip angle is perfectly matched with the Mikron Tool pilot drilling program (centering with CrazyDrill Pilot with a tip angle of 140° when drilling at depths greater than 4 x d).

A high degree of hole roundness due to a sturdy standard shaft which ensures a high degree of concentricity accuracy
High hole quality of H8/H7 is possible
Excellent surface quality of the hole
High degree of alignment accuracy

Pilot drilling or centering is recommended on irregular or inclined material surfaces, when there is need for high position accuracy and generally in holes of more than 4 x d at a diameter of 0.8 mm (.031”). These are carried out ideally with CrazyDrill Pilot or with CrazyDrill Crosspilot when drilling on inclined, convex or concave surfaces. Both pilot drills are perfectly adapted to CrazyDrill Steel in terms of diameter and tolerance (no measurable transition and no jamming).
Diameter range of the small carbide drill bits for steel: 0.4 to 6.35 mm (.016” to .250”, fractional inches available)
CrazyDrill Steel with usable length of up to 4 x d, 6 x d and 7 x d
Increments: up to a diameter of 4 mm (.157”) every 0.05 mm (.002”), from 4 mm (.157”) to 6 mm (.236”) every 0.10 mm (.004”)

Highest drilling speed and high productivity
Low tool consumption and efficient machine utilization due to long tool life
Self-centering
High degree of precision (H7 – H8 quality possible)
Extraordinary surface quality
External cooling with cutting oil or water based coolant with EP additives
Can be reground and recoated; drilling performance of a re-sharpened CrazyDrill Steel in terms of performance, precision and hole quality is equal to a new drill
Mikron Tool produces all tools with highest repeat precision. Hence the user will benefit from long term stable production conditions (stable process and machining precision)