Home /
Step drill

Effective without compromises

Completely renewed, the new RUKO step drill generation impresses with its uncompromising effectiveness.

Improved control on more difficult to cut materials, such as thin sheet and Plexiglas, whilst still providing outstanding performance on tougher materials such as stainless steel. Unique new cutting geometry design provides an easy, low force, seamless transition between the increasing hole diameters.

Faster and higher service life than ever thanks to the new point cut, the specially developed chip space geometry and the optimization of the helix angle.

Versatile in its application, Plexiglas and wood can also be easily cut in addition to materials like steel and stainless steel, with the best drilling results at the same time.

Download brochure as PDF (4.7 MB)

1. Point cut

The improved point cut geometry facilitates easier centering whilst supporting faster drilling in the workpiece. The new point cut geometry dramatically reduces lateral forces.

2. Helix angle

The helix angle optimisation leads to reduced axial feed forces, enabling the drilling cycle to be performed significantly faster in less time.

3. Chip space geometry

The optimised chip geometry ensures ideal chip and heat removal. The service life of the step drill is substantially improved thanks to the significant reduction in heat development. The ideal balance between optimised cutting and service life is achieved through the step drills special wedge angle.

4. 3-edge shank

The 3-edge shank provides a secure hold within the chuck, eliminating any possibility of slippage. This provides the maximum force transfer to the cutting edges of the tool. Ideal for use in hand-held drilling machines.

The benefits

+ Up to 4 times longer service life
+ Improved centering with quicker hole drilling
+ Extremely smooth run eliminates 'grabbing' material
+ Significantly reduced cutting forces
+ Highly efficient chip removal, reduces heat build up
+ Reduced 'feathering' in the hole
+ Drilling productivity significantly increased
+ Optimal performance in all drilling machines including hand-held drills

Variations

Step drills HSS and HSSE-Co 5, CBN ground, spiral fluted with split point

HSS | blank

HSS | TiN

HSS | TiAlN

HSSE-Co 5 | blank

Size	HSS \| blank	HSS \| TiN	HSS \| TiAlN	HSSE-Co 5 \| blank
0/9 Ø 4.0 - 12.00 mm	101 050-9	101 050-9 T	101 050-9 F	101 050-9 E
1 Ø 4.0 - 20.00 mm	101 051	101 051 T	101 051 F	101 051 E
2 Ø 4.0 - 30.00 mm	101 052	101 052 T	101 052 F	101 052 E
Step drill sets steel case Größen 0/9, 1, 2	101 026	101 026 T	101 026 F	101 026 E
Step drill sets in plastic case Größen 0/9, 1, 2	101 026 RO	101 026 TRO	101 026 FRO	101 026 ERO

Applications

Outstanding performance in: Sheets made from construction steels, high alloyed steel, stainless steel, brass, Perspex®, wood, chrome plated steel, aluminium.