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

EGE

CNMG431EGE CNMG120404N-GE .0156 ●●●● FFF CNMG432EGE CNMG120408N-GE .0313 ●●●● FFF CNMG433EGE CNMG120412N-GE .0469 ●●●● FFF CNMG434EGE CNMG120416N-GE .0625 ★●●★ FFF

Q Q Q Q

QQQQQ QQ QQQQQ QQ QQQQQ QQ QQQQQ QQ

( a p )

0 .08 .16 .24

( f )

.008 .016 .024

EGUW

CNMG432EGUW CNMG120408N-GUW .0313 ●●●● FF

Q Q

QQQQQ QQ QQQQQ QQ

F ●●●

● ●

( a p )

CNMG433EGUW CNMG120412N-GUW .0469 ●●●

FF

F

●●

0 .08 .16 .24

( f )

Ž B134

.008 .016 .024

C

Wiper

0 °

EUX

CNMG431EUX CNMG120404N-UX .0156 ●●●● FFF CNMG432EUX CNMG120408N-UX .0313 ●●●● FFF CNMG433EUX CNMG120412N-UX .0469 ●●●● FFF CNMG434EUX CNMG120416N-UX .0625 ●●●● FFF

Q Q Q Q Q Q Q Q

QQQQQ QQ QQQQQ QQ QQQQQ QQ QQQQQ QQ QQQQQ QQ QQQQQ QQ QQQQQ QQ QQQQQ QQ QQQQQ QQ QQQQQ ●● QQ QQQQQ ★● QQ QQQQQ QQ QQQQQ QQ QQQQQ QQ QQQQ QQ QQQQ QQ QQQQ QQ

( a p )

0 .08 .16 .24

( f )

D

.008 .016 .024

0 °

ENG

CNMG431ENG CNMG120404N-UG .0156 ●●●● CNMG432ENG CNMG120408N-UG .0313 ●●●●

FF FF FF FF

( a p )

0 .08 .16 .24

CNMG433ENG CNMG120412N-UG .0469 CNMG434ENG CNMG120416N-UG .0625

●★ ★★

R

( f )

.008 .016 .024

EEG

CNMG431EEG CNMG120404N-EG .0156 ★●●● ●●● CNMG432EEG CNMG120408N-EG .0313 ★●●● ●●● F CNMG433EEG CNMG120412N-EG .0469 ★●●● ●●● F

Q ●●●

( a p )

0 .08 .16 .24

Q ●●● FF Q ●●● FF

S

( f )

.008 .016 .024

0 °

CNMA431 CNMA432 CNMA433 CNMA434 CNGA430.5 CNGA431 CNGA432

CNMA120404 CNMA120408 CNMA120412 CNMA120416 CNGA120402 CNGA120404 CNGA120408

●●● F Q

.0156 .0313 .0469 .0625

●●● F Q ●●★

Q

T

●●● F Q

★●● F

.0078 QQQQQQQQQQQQQQQ F .0156 QQQQQQQQQQQQQQQ F .0313 QQQQQQQQQQQQQQQ F

Q

V

EMU

CNMG432EMU CNMG120408N-MU .0313 ●●●● FFF CNMG433EMU CNMG120412N-MU .0469 ●●●● FFF CNMG434EMU CNMG120416N-MU .0625 ●●●● FFF

Q ●●● FF ● QQQQQ

● QQ

●● F ●●●

( a p )

0 .08 .16 .24

Q ●●● FF ● QQQQQ ★● QQ Q ●●● ● QQQQQ QQ

●● F ●● F

W

( f )

.008 .016 .024

EEM

CNMG432EEM CNMG120408N-EM .0313 ★●●● ●●● CNMG433EEM CNMG120412N-EM .0469 ★●●● ●●● CNMG434EEM CNMG120416N-EM .0625 ★★★● ●●★

Q ●●● FF Q ●●● FF

QQQQQ QQ QQQQQ QQ QQQQQ QQ

( a p )

0 .08 .16 .24

Q ●●●

( f )

.008 .016 .024

0 °

EME

CNMG432EME CNMG120408N-ME .0313 ●●●● FFF CNMG433EME CNMG120412N-ME .0469 ●●●● FFF CNMG434EME CNMG120416N-ME .0625 ★●●★ FFF

Q Q Q

QQQQQ QQ QQQQQ QQ QQQQQ QQ

●●● ★●● ★●★

( a p )

.16 .32 .24 .08

( f )

0

.016

.032

EMX

CNMG432EMX CNMG120408N-MX .0313 CNMG433EMX CNMG120412N-MX .0469 CNMG434EMX CNMG120416N-MX .0625

Q Q Q

QQQQQ QQ QQQQQ QQ QQQQQ QQ

FF FF

●●● ●●●

( a p )

0 .08 .16 .24

F

●●

( f )

.008 .016 .024

-15°

B24

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