RUKO Split Point Step Drills
All step drills have split points and come in three different materials.
- Step drills are available in HSS (high-speed steel), 5% cobalt high-speed steel (HSSE-Co5), and titanium nitride (TiN) coated
high-speed steel.
- The spiral flutes of RUKO high-performance step drills are CBN-ground from the solid hardened form.
- Because CBN (cubical boron nitride) is a much harder abrasive than even silicon carbide or corundum, a better
and sharper cutting edge is achieved without burrs.
- Because of this higher dimensional precision, these industrial step drills will last considerably longer while
maintaining precise process tolerances.
- HSS-Co 5 step drills are the best choice for cutting stainless steels.
- The added titanium nitride coating increases the surface hardness to approximately 2300 HV and the heat resistance
to 1100°F (600°C).
Features
What makes these step drills special?
- CBN-ground flutes without burrs mean a superior cutting edge and 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
- The CBN-ground point ensures centering and spot-drilling, even in thin-walled material
- Point Cut: split point DIN 1412 C
- Point angle: 118°
- Step angle: 90°
- Right-hand cutting
Applications
Use High Speed Steel drills, HSS Cobalt 5 and HSS-TiN coated 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