Page 925 - Ceratizit Catalog

Formula collection
D50

vc · 1000
–1
Revolution number n = [min ] Material Specific cutting
π · D 2
force k c (N/mm )
π · D · n
Cutting speed v = [m/min]
c
1000 St 37.11; St 42.11 1740
St 50.11 1950
Feed rate f [mm/rev.]
St 60.11 2070
St 70.11 2220
Feed rate v = f · n [m/min] C 35, C 45, Ck 45 2060/2175
f
C 60, Ck 60 2090
π · D 2
Machining cross section A = [mm ] 16 Mn Cr 5 2060
2
T
4
18 Cr Ni 6 2220
vf · AT
3
Metal removal rate Q = [cm /min] 34 Cr Mo 4 2190
1000
50 Cr V 4 2175
2
Specific cutting force k = see table [N/mm ] tempered 100 Cr 6 2335
c
Mn, Cr Ni alloyed steel 2335
Q
Power requirements P = · k c [kW]
c
60 · 1000 · η
Cr Mo alloyed steel 2570
f · kc D 2
Torque moment M = · [Nm]
c
1000 8 Corrosion resistant steel 2530
D
Feed force (approx.) F ≈ 0,7 · f · k c [N] Hot working steel 2570
f
2
L + h Nitriding steel 2570
Drilling time T = [min]
c
vf
GS 45 1570
Clearance h [mm] GS 52 1765
GG 22, GG 25 1140
Drilling depth L [mm] GGG 42 1370
Aluminium cast alloys 640
-values depend on the feed.
Please note! The k c
Therefore the table contains their upper limit
values. The calculated power is possibly higher
than the power actually needed (~ 10 - 20%).

Drilling / Technical information