Sumitomo General Catalog 2025-2026

Turning 80˚ Diamond Negative Inserts

Indexable Insert

CN 80° Diamond Neg. With Hole CN ¢¢ 64 ˜ Dimensions (inch) Cutting Edge Length L .7598 Thickness S .2500 Inscribed Circle IC .7500 Hole Dia. D1 .3126

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

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

EEX

CNMG643EEX CNMG190612N-EX

Q ●●● FF

QQQQQ QQ

.0469

( a p )

.16

.08

( f )

0

.008

.016

16°

EUP

CNMG643EUP CNMG190612N-UP

Q

QQQQQ QQ

FF

( a p )

.0469

.08 .16 .24

( f )

0

10°

.008 .016 .024

EGE

CNMG643EGE CNMG190612N-GE CNMG644EGE CNMG190616N-GE

Q Q

QQQQQ QQ QQQQQ QQ

.0469 ●●●★ FFF

( a p )

C

.08 .16 .24

FF

.0625 ★★●★

( f )

0

.008 .016 .024

EUX

CNMG642EUX CNMG190608N-UX CNMG643EUX CNMG190612N-UX CNMG644EUX CNMG190616N-UX

Q Q Q Q Q Q

QQQQQ QQ QQQQQ QQ QQQQQ QQ QQQQQ QQ QQQQQ QQ QQQQQ QQ

F

.0313

( a p )

.08 .16 .24

D

.0469 ●★●● FFF .0625 ★★★★ FFF

( f )

0

0 °

.008 .016 .024

ENG

CNMG642ENG CNMG190608N-UG .0313 CNMG643ENG CNMG190612N-UG .0469 CNMG644ENG CNMG190616N-UG .0625

FF FF FF

●● ●● ★★

( a p )

R

0 .08 .16 .24

( f )

.008 .016 .024

EEG

CNMG643EEG CNMG190612N-EG CNMG644EEG CNMG190616N-EG

Q ●●● FF

QQQQQ ★★ QQ QQQQQ QQ

.0469 ★★●● ●●● F .0625 ★ ★● ●●★

( a p )

S

0 .08 .16 .24

Q ●●●

( f )

0 °

.008 .016 .024

CNMA643 CNMA644

CNMA190612 CNMA190616

●●● F Q ★●● F Q

QQQQQ QQ QQQQQ QQ

.0469 .0625

T

Q

EMU

CNMG642EMU CNMG190608N-MU .0313 ● ● F F CNMG643EMU CNMG190612N-MU .0469 ●●●● FFF ● F

Q

QQQQQ QQ QQQQQ QQ QQQQQ QQ QQQQQ QQ

F

( a p )

.08 .16 .24

Q ●●● FF Q ●●● FF

CNMG644EMU CNMG190616N-MU .0625 ●●●● CNMG646EMU CNMG190624N-MU .0938 ★★★★

FF FF

F

V

Q ★★★

( f )

0

.008 .016 .024

EEM

CNMG643EEM CNMG190612N-EM .0469 ★★●● ●●● CNMG644EEM CNMG190616N-EM .0625 ★★★● ●●● CNMG646EEM CNMG190624N-EM .0938 ★★★● ★★★ CNMG643EME CNMG190612N-ME .0469 ★●●● FFF CNMG644EME CNMG190616N-ME .0625 ★●●● FFF CNMG646EME CNMG190624N-ME .0938 ★★★★ FF

Q ●●● FF Q ★●● FF

.40 ( a p )

.20

Q ★★★

W

( f )

0

0 °

.020

.040

EME

Q Q Q

QQQQQ QQ QQQQQ QQ QQQQQ QQ

★●● ★★● ★★★

( a p )

.16 .32 .24 .08

( f )

0

.016

.032

EMX

CNMG643EMX CNMG190612N-MX .0469 ●●●● FFF CNMG644EMX CNMG190616N-MX .0625 ●●●● FFF

Q Q

QQQQQ QQ QQQQQ QQ

( a p )

.08 .16 .24

( f )

0

-15°

.008 .016 .024

ENZ

CNMG642ENZ CNMG190608N-UZ CNMG643ENZ CNMG190612N-UZ CNMG644ENZ CNMG190616N-UZ

Q

QQQQQ QQ QQQQQ QQ QQQQQ QQ

.0313

FF FF FF

●★

( a p )

0 .08 .16 .24

★★● F Q ★●● F Q

.0469 ● ●●

.0625

●●

( f )

.008 .016 .024

B28

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