COBALT DRILL BIT SET 25 PIECE 1-13MM X 0.5 IN METAL CASE

COBALT DRILL BIT SET 25 PIECE 1-13MM X 0.5 IN METAL CASE
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COBALT DRILL BIT SET 25 PIECE 1-13MM X 0.5 IN METAL CASE

25 Piece Cobalt drill bit set

Alpen HSS-ECo Cobalt KM25 Jobber drill set in metal cassette 19 pcs. ø 1.0-13.0 mm. Drill bit size increments - 0,5mm.

25 Piece Cobalt drill bit setRange 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:
  • Structural steels < 400 N/mm²
  • Free cutting steels < 850 N/mm²
  • Unalloyed heat treatable steels < 1.100 N/mm²
  • Alloyed heat treatable steels < 1.300 N/mm²
  • Copper, brass, aluminium
  • Stainless steels
  • Grey cast iron, malleable cast iron
  • Plastics

Art-No. 00 001002251 00

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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

Specifications
Drill diameter Qty Sample
HSS-ECo Jobber drill DIN 338 RN
Ø 1,0 mm - 13 mm		 1 ea Size Jobber drill COBALT
Increments 0,5 mm
Specification DIN 338

Cooling recommendations for Cobalt drills
Material Hardness Coolant
Steel Steel < 400 N/mm2 Emulsion
Steel Steel < 850 N/mm2 Emulsion
Steel Steel < 1.100 N/mm2 Emulsion
Steel Steel < 1.300 N/mm2 Emulsion or Oil
Stainless Steel Stainless Steel   Emulsion
Cast Iron Cast iron   Dry / Compressed Air / Emulsion
Titanium Titanium   Oil
Copper and Brass Copper and Brass   Oil
Aluminium Aluminium   Emulsion
Composite Materials Composites and Plastics   Emulsion / Water / Air

Sharpening angles and Point shapes

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.

Relieved cone, 118 deg  Split Point AC, 118 deg  Split Point C, 130 deg  Centering point - 180 deg 

Relieved cone,
118°

Split Point AC,
118°

Split Point C,
130°

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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  • Brand: ALPEN
  • Product Code: ALP KM25COB
  • Availability: 26
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  • N$ 4,441.82
  • Ex Tax: N$ 3,862.45
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Tags: Alpen, Drill bit set, Stainless steel drilling, Brand ALPEN