Sumitomo General Catalog 2025-2026

Turning 80˚ Diamond Negative Inserts

Indexable Insert

CN 80° Diamond Neg. With Hole CN ¢¢ 33 ˜ Dimensions (inch) Cutting Edge Length L .3819 Thickness S .1875 Inscribed Circle IC .3750 Hole Dia. D1 .1500

RE

IC

Grade Selection

A2, A3

Chipbreaker Selection B10 on Insert Grade Selection by Part Material

A10 on

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

C9

Applicable External Holders

Nose Radius

Application Range

Shape

Sumitomo Cat. No.

ISO Cat. No.

RE

EFB

CNMG331EFB CNMG090404N-FB .0156 CNMG332EFB CNMG090408N-FB .0313

Q Q

Q ★★ Q ★★

Q Q

★ ★

( a p )

.08

.04

( f )

0

.008 .016

27°

CNMG331EFE CNMG090404N-FE .0156 ★★★★ CNMG332EFE CNMG090408N-FE .0313 ★★★★

Q Q

Q ★★ Q ★★

Q Q

EFE

★★ ★★

.08 ( a p )

.04

( f )

0

.008

.016

20°

C

ESU

CNMG331ESU CNMG090404N-SU .0156 ★★★ CNMG332ESU CNMG090408N-SU .0313 ★★★ CNMG333ESU CNMG090412N-SU .0469 ★★★★

Q Q Q

Q ★ ★ Q ★ ★ Q ★ ★

Q Q Q

F F

.08 ( a p )

.04

( f )

0

13°

.008 .016

ESEW

CNMG331ESEW CNMG090404N-SEW .0156 ★★★★ CNMG332ESEW CNMG090408N-SEW .0313 ★★★★

D

Q Q

QQQQQ QQ QQQQQ QQ

.16 ( a p )

.08

( f )

0

R

Ž B134 Wiper

.008 .020 .032

EEF

CNMG331EEF CNMG090404N-EF .0156 CNMG332EEF CNMG090408N-EF .0313

Q ●★★ Q ●●★

QQQQQ QQ QQQQQ QQ

★★★ ★★★

( a p )

.08

.04

S

( f )

0

.016 .008

20°

EGU

CNMG331EGU CNMG090404N-GU .0156 CNMG332EGU CNMG090408N-GU .0313

Q Q Q

Q ★ ★ Q ★ ★ Q ★ ★

Q Q Q

★ ★

0 .08 .16 .24 ( a p )

CNMG333EGU CNMG090412N-GU .0469 ★★★★

★★★

T

( f )

.008 .016 .024

ENG

CNMG331ENG CNMG090404N-UG .0156 CNMG332ENG CNMG090408N-UG .0313

Q Q

QQQQQ QQ QQQQQ QQ

F

( a p )

0 .08 .16 .24

★★

V

( f )

.008 .016 .024

CNMG332EEG CNMG090408N-EG .0313 CNMG333EEG CNMG090412N-EG .0469

Q ●★★ Q ★★★

QQQQQ QQ QQQQQ QQ

EEG

★★★ ★★★

( a p )

.08 .16 .24

W

( f )

0

0 °

.008 .016 .024

EGZ

CNMG332EGZ CNMG090408N-GZ .0313 CNMG333EGZ CNMG090412N-GZ .0469

Q Q

QQQQQ QQ QQQQQ QQ

★★★ ★★★

( a p )

0 .08 .16 .24

( f )

0 °

.008 .016 .024

B21

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