Alpen HSS-ECo Cobalt KM19 Jobber drill set in metal cassette 19 pcs. ø 1.0-10.0
mm.
Range
of application:5% cobalt-alloyed jobber drills with high heat-resistance for drilling steels with tensile strength over 800 N/mm², especially suitable for high alloyed steels, bearing-steels, hot/cold-rolled steel. Ideal for stainless steel.
For drilling into:
Art-No. 00 001002191 00 |
| Strengths | |
| HIGHLY ACCURATE | special shape, drills without center-punching |
| BREAK RESISTANT | thanks to CNC heat treatment |
| INDUSTRIAL QUALITY | suitable for NC machines |
| SELF-CENTERING | thanks to special point shape |
| TEMPERATURE RESISTANT | Up to 600° C drilling even with the highest thermal stress |
| FAST | due to special drill grinding fast drilling progress and up to 50% less feed pressure required |
| Cooling recommendations for Cobalt drills | |||
| Material | Hardness | Coolant | |
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Steel | < 400 N/mm2 | Emulsion |
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Steel | < 850 N/mm2 | Emulsion |
|
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Steel | < 1.100 N/mm2 | Emulsion |
|
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Steel | < 1.300 N/mm2 | Emulsion or Oil |
 |
Stainless Steel | Emulsion | |
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Cast iron | Dry / Compressed Air / Emulsion | |
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Titanium | Oil | |
 |
Copper and Brass | Oil | |
 |
Aluminium | Emulsion | |
 |
Composites and Plastics | Emulsion / Water / Air | |
Drill bits are not all the same. Special materials and the different applications need different cutting angles and point shapes. Refer to the table below to learn more about point shapes and the lip angles.
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Relieved cone,
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Split Point AC,
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Split Point C,
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Centering Point-Shape E, 180° |
| Universal point-shape for a lot of drilling applications in steel and iron, non ferritic-materials, plastics and other materials. | Point-shape with increased performance and very good centering. This point shape is being used for all industrial drill bits. |
Special point-shape for stainless steels and special materials. |
Special point-shape for spot weld drills. |
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