New
Double ended twist drills for welding spots
D l1 l2 Item code On stock
5 62 20 VN40225.0500 Yes
6 66 22 VN40225.0600 Yes
8 79 27 VN40225.0800 Yes
10 89 30 VN40225.1000 Yes

Cutting conditions


Material

Strength
P.1 | Free-cutting steels, general construction steels ≤ 600 N/mm²
P.2 | General construction steels, steel castings ≤ 850 N/mm²
P.3 | Tool steels low alloyed ≤ 1100 N/mm²
P.4 | Heat treatable steels ≤ 900 N/mm²
P.5 | Tool steels high alloyed ≤ 1100 N/mm²

Calculations of cutting conditions

Product attributes

Tool geometry

Tool geometry

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Lead of helix 25° - 30°.
Material HSS Co5

Material HSS Co5

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Very high performance high speed steel with good toughness for milling cutters and for milling of materials up to the strength of 1200 MPa.
Point shape - form E

Point shape - form E

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Point angle 180° with centre point, DIN 1412 form E.