Turning Insert Selection Guide Chipbreakers
Negative Type
Positive Type
6,0 –
Depth of Cut (mm)
NEM (NMU)
NEG
NEM
4,0 –
NEX
NMU
3,0 –
4,0 –
NGU NEX NGU NEG
( )
2,0 –
NEF
NSU (NEF)
2,0 –
NMU
NSU
NMU
NLB
NLU NSU
1,0 –
NSU
0 l l l 0 0,2 0,4 0,6
Depth of Cut (mm)
Insert Selection
Stainless Steel
NLB
NLU 0 l l 0 0,2 0,4
Feed Rate (mm/rev)
Feed Rate (mm/rev)
Grades (m/min) 200
Cutting Speed (vc)
High Speed, High Efficiency Cutting
AC6020M
150
Wide Cutting Range
AC6030M
100 Small Product Machining
AC1030U
Heavy Interrupted Cutting
AC6040M
AC630M
50
AC530U
Finishing
Roughing
Continuous Cutting
General Cutting
Interrupted Cutting
Recommended Cutting Conditions Work Material
CrBased
Ferritic Materials Martensitic Materials Austenitic Materials
Two-Phase Cr/Ni- (Austenite / Based Ferrite) Materials
Precipitation Hardening
A8
X6CrAl 13, X8CrNiS 18 9, X29CrS 13, X6CrMoS 17, X12CrS 13 X12Cr 13, X20Cr 13, X30Cr 13, X6Cr 17, X19CrNi 17 2, X6CrNi 18 9 X5CrNi 18 10, X2CrNi 19 11, X2CrNiMo 18 10, X4CrNiMo 17 12 2, X2CrNiMo 17 12 2, X5CrNiMo 17 13, X6CrNiTi 18 10, X70CrMo 15 X5CrNi 17 7, X2CrNi 18 9, X6CrNi 25 20, X2CrNiMoN 17 12 2, X6CrNiNb 18 10 X5CrNiCuNb 16 4, X7CrNiAl 17 7, X4CrNuMo 27 5 2, X2CrNiMoN 22 5 3, X2CrNiMoCuN 25 6 3
Cutting Range Finishing Medium Roughing Finishing Medium Roughing Finishing Medium Roughing Finishing Medium Roughing Finishing Medium Roughing
(Min. - Optimum - Max.)
Chipbreaker
Grade
NEF (NSU) NEG · NEX · NGU NEM NEF (NSU) NEG · NEX · NGU NEM NEF (NSU) NEG · NEX · NGU NEM NEF (NSU) NEG · NEX · NGU NEM NEF (NSU) NEG · NEX · NGU NEM
AC6020M AC6030M AC6040M AC6020M AC6030M AC6040M AC6020M AC6030M AC6040M AC6030M AC6030M AC6040M AC6030M AC6030M AC6040M
Cutting Conditions Depth of Cut ap (mm) 0,5–1,5–2,0 1,0–2,5–4,0 1,5–3,5–6,0 0,5–1,5–2,0 1,0–2,5–4,0 1,5–3,5–6,0 0,5–1,5–2,0 1,0–2,5–4,0 1,5–3,5–6,0 0,5–1,5–2,0 1,0–2,5–4,0 1,5–3,5–6,0 0,5–1,5–2,0 1,0–2,5–4,0 1,5–3,5–6,0
Feed Rate f (mm/rev) 0,05–0,15–0,25 0,10–0,25–0,40 0,20–0,35–0,60 0,05–0,15–0,25 0,10–0,25–0,40 0,20–0,35–0,60 0,05–0,15–0,25 0,10–0,25–0,40 0,20–0,35–0,60 0,05–0,15–0,25 0,10–0,25–0,40 0,20–0,35–0,60 0,05–0,15–0,25 0,10–0,25–0,40 0,20–0,35–0,60
Cutting Speed vc (m/min) 170–230–300 140–170–250 140–170–200 120–180–240 100–150–200 80–130–180 120–180–240 100–150–200 80–130–180 100–145–180 80–120–160 70–100–140 90–115–140 70–90–110 50–80–120