Sumitomo General Catalog 2025-2026

Turning 80˚ Diamond Negative Inserts

Indexable Insert

CN 80° Diamond Neg. With Hole CN ¢¢ 43 ˜ Dimensions (inch) Cutting Edge Length L .5079 Thickness S .1875 Inscribed Circle IC .5000 Hole Dia. D1 .2031

RE

Information in "Shape" column

IC

EFL

Name of Chipbreaker

.12

Application Range

.08

Recommended Part Material

.04

Chipbreaker Rake Angle

0

.008 .016 .024

10 °

Feed Rate (f) (inch/rev)

S

80°

L

: Interrupted Cutting 1st Recommended : Interrupted Cutting 2nd Recommended

: General Cutting 1st Recommended : General Cutting 2nd Recommended

: Continuous Cutting 1st Recommended : Continuous Cutting 2nd Recommended

P Steel M Stainless Steel K Cast Iron N Non-Ferrous Metal S Exotic Alloy H Hardened Steel

B

L30 on

M10

B130

SUMIBORON (CBN) Inserts

SUMIDIA (PCD) Inserts

Ceramic Inserts

Coated Cermet

Coated Carbide

Carbide

Cermet

C5

E12

Applicable External Holders

Applicable Internal Holders

Nose Radius

Application Range

Shape

Sumitomo Cat. No.

ISO Cat. No.

RE

EFB

CNMG430.5EFB CNMG120402N-FB .0078 CNMG431EFB CNMG120404N-FB .0156 CNMG432EFB CNMG120408N-FB .0313

Q Q Q

Q ★★★ Q ★★★ Q ★★★

Q Q Q

★ ★ ★

( a p )

.08

.04

( f )

0

.008 .016

27°

EFA

CNMG430.5EFA CNMG120402N-FA .0078 QQQQQQQQQQQQQQQQQQQQQQQ ●●★● QQ Q CNMG431EFA CNMG120404N-FA .0156 QQQQQQQQQQQQQQQQQQQQQQQ ●★★● QQ Q CNMG432EFA CNMG120408N-FA .0313 QQQQQQQQQQQQQQQQQQQQQQQ ●★★● QQ Q

( a p )

.08

.04

C

( f )

0

.016 .008

20°

EFL

CNMG431EFL CNMG120404N-FL .0156 CNMG432EFL CNMG120408N-FL .0313

Q ★★★ Q ●★★

Q ●★★ Q ●★★

Q Q

F F

●● ●●

.08 ( a p )

.04

D

( f )

0

.016 .008

10°

CNMG430.5EFE CNMG120402N-FE .0078 ●●●★ CNMG431EFE CNMG120404N-FE .0156 ●★★● CNMG432EFE CNMG120408N-FE .0313 ●★★● CNMG433EFE CNMG120412N-FE .0469 ●●★★ F

Q Q Q Q Q Q Q Q Q Q Q

Q ★★★ Q ★★★ Q ★★★ Q ★★★

Q Q Q Q Q Q Q Q Q Q Q

EFE

★★ ★★ ★★ ★★

.08 ( a p )

.04

R

( f )

0

.008

.016

20°

CNMG430.5ELU CNMG120402N-LU .0078

Q ★★★

★ ★ ★ ★ ★ ★ ★

ELU

.08 ( a p )

CNMG431ELU CNMG120404N-LU .0156 ●●●★ FF CNMG432ELU CNMG120408N-LU .0313 ●●●● FF CNMG433ELU CNMG120412N-LU .0469 ★●★★ FF

Q ●★★★ Q ●★★★ Q ★★ ★ Q ●● ● Q ●● ● Q ●★ ●

S

.04

( f )

0

.008 .016

10°

ELUW

CNMG431ELUW CNMG120404N-LUW .0156 ●●● CNMG432ELUW CNMG120408N-LUW .0313 ●●● CNMG433ELUW CNMG120412N-LUW .0469 ●●●

FF FF

( a p ) .08

T

F

.04

( f )

Ž B134

0

.016 .008

Wiper

10°

ESU

CNMG430.5ESU CNMG120402N-SU .0078

Q ●●● FF

Q ★★★

Q Q Q Q

★★

.08 ( a p )

V

CNMG431ESU CNMG120404N-SU .0156 ●●●● FFF

Q ●●● FF ★ Q ●★★● Q ●●● FF ★ Q ●●★●

●● F

CNMG432ESU CNMG120408N-SU .0313 ●●●● FFF ★●● F

.04

CNMG433ESU CNMG120412N-SU .0469 ●●●● FFF

Q ●●●

F ★ Q ●★★★

●● F

( f )

0

.008 .016

13°

W

ESU(J)

CNGG430ESU CNGG120401N-SU .0039 QQQQQQQQQQQQQQQ CNGG430.5ESU CNGG120402N-SU .0078 QQQQQQQQQQQQQQQ

QQQQ QQ

●●● FF ●●● FF

●●★● CNGG430.5ESUJ CNGG120402N-SUJ .0078 QQQQQQQQQQQQQQQQQQQQQQQQQQQQQ ● CNGG431ESU CNGG120404N-SU .0156 QQQQQQQQQQQQQQQ ●●● FF ●●★● CNGG431ESUJ CNGG120404N-SUJ .0156 QQQQQQQQQQQQQQQQQQQQQQQQQQQQQ ●● CNGG432ESU CNGG120408N-SU .0313 QQQQQQQQQQQQQQQ ●●● FF ●★★★ CNGG432ESUJ CNGG120408N-SUJ .0313 QQQQQQQQQQQQQQQQQQQQQQQQQQQQQ ●●

( a p )

.08

.04

( f )

0

.016 .008

13°

ESUJ depth of cut can be increased to .200" in Aluminum material

B22

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