VK10028.4300 High-speed steel HSS Co8
Type N
Tool geometry
Point shape - form C
Point angle 128°
Drilling depth 5xD
Right helix
Material HSS Co8
Steamtempered (Black finish)
D MK l1 l2 Item code On stock
43 4 265 120 VK10028.4300 No

Cutting conditions


Material

Strength

Vc
fz(mm/r)
Ø10

Ø12,5

Ø16

Ø20

Ø25

Ø31,5

Ø40

Ø50
S.1 | Chrome-nickel alloys ≤ 1500 N/mm² 6 0,063 0,063 0,08 0,1 0,125 0,125 0,16 0,2
H.1 | Hardened materials (< 54 HRC) ≤ 1920 N/mm² (<54 HRC) 9 0,125 0,125 0,16 0,2 0,25 0,25 0,315 0,4
H.2 | Hardened materials (54 - 60 HRC) 1920 - 2210 N/mm² (54 - 60 HRC) 5 0,125 0,125 0,16 0,2 0,25 0,25 0,315 0,4

Calculations of cutting conditions

Product attributes

Type N

Type N

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Normal profile of flute, normal core, point angle 118°. Drills made of HSS Co mildly strenghtened core, point angle 130°.
Point shape - form C

Point shape - form C

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Conical lip relief, split point, DIN 1412 form C.
Drilling depth 5xD

Drilling depth 5xD

Material HSS Co8

Material HSS Co8

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Extra high performance high speed steel with good toughness and great temperature resistance. It is applicable especially for milling of materials with high strength, austenitic steels, steels for warm working, etc.
Tool geometry

Tool geometry

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Lead of helix 10° - 15°.
Point angle 128°

Point angle 128°

Right helix

Right helix

Steamtempered (Black finish)

Steamtempered (Black finish)

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Steamtempered (Black finish) is a process where a layer of iron oxide is formed on the surface of the tool. This layer increases the abrasion resistance of the blade, increases corrosion resistance and improves lubrication of the tool. The most effective use is for drill bits and taps.