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Home Catalogue Half circle milling cutters concave, code 820070, radius 4 mm
820070.040
High-speed steel HSS
~DIN 855A
R
D
S
d
Z
Item code
On stock
4
63
16
22
12
820070.040
Yes
Cutting conditions
p e c fz (mm/z) Ø 50Ø 63Ø 80Ø 100Ø 125
P.1 | Free-cutting steels, general construction steels
≤ 600 N/mm²
1xR
2xR
30
0.08
0.1
0.12
0.14
0.142
P.4 | Heat treatable steels
≤ 900 N/mm²
1xR
2xR
20
0.08
0.1
0.12
0.14
0.142
K.1 | Cast iron (≤ 240 HB)
≤ 820 N/mm²
1xR
2xR
25
0.08
0.1
0.12
0.14
0.142
K.2 | Cast iron (> 240 HB)
> 800 N/mm²
1xR
2xR
17
0.08
0.1
0.12
0.14
0.142
Calculations of cutting conditions
Product attributes
Straight bore with standard keyway according to DIN 138.
Helix angle = 0°.
Rake angle = 10°.
Universal usage. Suitable for materials up to strength 900 MPa.
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.
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