421940 High-speed steel HSS DIN 845
Clamping element
Type N
Tool geometry
Feed direction possibility
Material HSS
End mills long, semicoarse teeth, type N, Morse taper shank
D
js 14
MK l1 l2 Z Item code On stock
22 2 160 75 5 421940.220 Yes
25 3 184 80 5 421940.250 Yes
32 4 229 100 6 421940.320 Yes
40 4 250 125 6 421940.400 Yes
50 5 308 150 6 421940.500 Yes
50 5 268 110 6 421940.500110 Yes
63 5 338 180 8 421940.630 Yes

421940.250, 421940.320 a 421940.500110 ≠ DIN 845

Cutting conditions


Material

Strength

Ap

Ae

Vc
fz(mm/z)
Ø 10

Ø 12

Ø 16

Ø 18

Ø 20

Ø 25

Ø 32

Ø 40

Ø 50
P.1 | Free-cutting steels, general construction steels ≤ 600 N/mm² 1xD 0,1xD 30 0.028 0.034 0.044 0.051 0.057 0.71 0.091 0.11 0.13
P.2 | General construction steels, steel castings ≤ 850 N/mm² 1xD 0,1xD 26 0.028 0.034 0.044 0.051 0.057 0.71 0.091 0.11 0.13
P.4 | Heat treatable steels ≤ 900 N/mm² 1xD 0,1xD 20 0.028 0.034 0.044 0.051 0.057 0.71 0.091 0.11 0.13
K.1 | Cast iron < 240 HB 1xD 0,1xD 25 0.028 0.034 0.044 0.051 0.057 0.71 0.091 0.11 0.13

Calculations of cutting conditions

Product attributes

Clamping element

Clamping element

more +
Morse taper shank according to DIN 228 A.
Tool geometry

Tool geometry

more +
Helix angle = 35°. Rake angle = 12°.
Material HSS

Material HSS

more +
High speed steel of average performance, it is applicable especially for cutters of smaller diameters and for milling of materials up to the strength of 900 MPa.
Type N

Type N

more +
Universal usage. Suitable for materials up to strength 900 MPa.
Feed direction possibility

Feed direction possibility