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CBN Fully Ground Step Drill Bits

All Step Drill Bits have Split Points and come in two different materials.

· The Split Point reduces “Walking” which is the tendency of a spinning bit to rotate away from the point at which you want to drill.

· Because CBN(cubical boron nitride)is a much harder abrasive than even silicon carbide or corundum, a better an sharper cutting edge is

  achieved without burrs.

· Because of this higher dimensional precision,the drill bits will last considerably longer while maintaining precise process tolerances.

· The High Speed Steel(HSS) allows the bit to cut faster than High Carbon Steel. At room temperature,HSS and high carbon steel have an

 equivalent hardness;at elevated temperatures HSS become advantageous.


· Reduces set up time

· No more CBN-ground flutes without burrs mean a superior cutting edge an longer tool life.

· Each step has a radially adjusted relief produced by CBN grinding,relating directly to the diameter of the step, so the cutting edge is always the highest point of the diameter

· Each step is axially CBN relief-ground, meaning the cutting edge is also the highest point of the axial cutting axis

· The cutting edge of each step has relief angle,meaning the cutting edge is also the highest point in advance direction


Use Steel drills for :

· Sheet metal working in electrical, sanitary engineering, heating technologies, automotive, mechanical engineering,switching systems and aviation

· Non-ferrous metal,steel,stainless steel,thermoplastics, duroplastics ,sheet metals up to 0.16”(8 ga.)thick

· Center,spot-drill,bore and debur - all in one operation

Additional surface hardening


· For hard materials

· Extended service lives

· Higher cutting speed

· Higher tool life



· Temperature?resistance?up?to?600?°?C?

· Surface?treatment?ca.?2.500?HV?

· Layer?Thickness?up?to?2?μm?

· Reduces?cold?weldings?




· For particularly hard materials?

· Outstanding service lives?

· Highest cutting speeds?

· Optimized tool life ?



· Surface?treatment?ca.?3.500?HV?

· Layer Thickness up to 4 μm?

· Reduces cold weldings?

· Temperature resistant up to 800°C, cooling not necessary ?



· Sheet?metal?working?in?electrical,?sanitary?engineering, heating?technologies, automotive, mechanical engineering, ?


· Non-ferrous?metal,?steel,?stainless?steel,?thermoplastics?,duroplastics,?sheet?metals?up?to?0.16”(8 ga.) thick??

· Center,spot-drill,?bore?and?deburr-all?in?one?operation?

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