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Step drill

Effective without compromises.

The new RUKO
step drill generation

Up to 4 times more holes

Smooth and quiet drilling

Significantly improved drilling result

Effective without compromises.

The new RUKO
step drill generation

The Next Generation

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

The newly developed cutting edge geometry ensures especially soft transitions between the individual steps and a significantly smoother and faster drilling process.

The Next Generation

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

The newly developed cutting edge geometry ensures especially soft transitions between the individual steps and a significantly smoother and faster drilling process.

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

The 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
0/5 Ø 4.0 - 12.00 mm	101 050-5	101 050-5 T	101 050-5 F	-
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
3 Ø 6.0 - 38.00 mm	101 053	101 053 T	101 053 F	-
4 Ø 6.0 - 26.75 mm	101 055	101 055 T	101 055 F	-
5 Ø 4.0 - 39.00 mm	101 056	101 056 T	101 056 F	101 056 E
6 Ø 6.0 - 32.00 mm	101 057	101 057 T	101 057 F	-
7 Ø 5.0 - 28.00 mm	101 058	101 058 T	101 058 F	-
8 Ø 6.0 - 30.50 mm	101 098	101 098 T	101 098 F	-
9 Ø 6.0 - 37.00 mm	101 060	101 060 T	101 060 F	101 060 E
12 Ø 6.0 - 32.00 mm	101 096	101 096 T	101 096 F	-
13 Ø 6.0 - 40.00 mm	101 097*	101 097 T*	101 097 F*	-
18 Ø 6.5 - 32.50 mm	-	-	-	101 534 E

* straight flute

The applications.

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