Sumitomo General Catalog 2025-2026

Turning Triangular Negative Inserts

Indexable Insert

TN Triangular Neg. With Hole

RE

Information in "Shape" column

EFL

Name of Chipbreaker

.12

IC

Application Range

.08

Recommended Part Material

.04

Chipbreaker Rake Angle

0

.008 .016 .024

10 °

Feed Rate (f) (inch/rev)

L

s

60°

: 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

TN ¢¢ 32 ˜ Dimensions (inch)

Cutting Edge Length L .6496 Thickness S .1250 Inscribed Circle IC .3750 Hole Dia. D1 .1500

B

Coated Cermet

Coated Carbide

Carbide

Cermet

C20

Applicable External Holders

Nose Radius

Application Range

Shape

Sumitomo Cat. No.

ISO Cat. No.

RE

TNMG321ESU TNMG160304N-SU

Q Q

QQQQQ QQ QQQQQ QQ

ESU

F

.0156

●●● ●●●

( a p )

.08

TNMG322ESU TNMG160308N-SU .0313

FF

.04

( f )

13°

0

.016 .008

TNMG322ENK TNMG160308N-SK .0313

Q

QQQQQ QQ

ENK

F

( a p )

0 .08 .16 .24

( f )

.008 .016 .024

TNMG321EUX TNMG160304N-UX

Q Q

QQQQQ QQ QQQQQ QQ

EUX

.0156

● ●

( a p )

.08

C

TNMG322EUX TNMG160308N-UX .0313

F

.04

( f )

13°

0

.016 .008

TNMG321ENG TNMG160304N-UG

Q Q

QQQQQ QQ QQQQQ QQ

ENG

F

( a p )

.0156

.08 .16 .24

TNMG322ENG TNMG160308N-UG .0313

FF

●●

D

( f )

0

.008 .016 .024

TNMA322

TNMA160308

Q

QQQQQ QQ

.0313

★●

R

Q

TNGA321

TNGA160304

QQ ★ Q

.0156 QQQQQQQQQQQQQQQQQQQQQQQ

Q

S

TNMG322ENZ TNMG160308N-UZ

Q Q

QQQQQ QQ QQQQQ QQ

ENZ

( a p )

.0313

● ●

.08 .16 .24

TNMG323ENZ TNMG160312N-UZ .0469

F

T

( f )

0

.008 .016 .024

: 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

TN ¢¢ 33 ˜ Dimensions (inch)

V

Cutting Edge Length L .6496 Thickness S .1875 Inscribed Circle IC .3750 Hole Dia. D1 .1500

W

M18

SUMIDIA (PCD) Inserts

Coated Cermet

Coated Carbide

Carbide

Cermet

L68

M27

B132

SUMIBORON (CBN) Inserts

SUMIDIA (PCD) Binderless Inserts

Ceramic Inserts

C20

E23

Applicable External Holders

Applicable Internal Holders

Nose Radius

Application Range

Shape

Sumitomo Cat. No.

ISO Cat. No.

RE

TNMG330.5EFB TNMG160402N-FB .0078 TNMG331EFB TNMG160404N-FB .0156 TNMG332EFB TNMG160408N-FB .0313

Q Q Q

Q ★★★ Q ★★★ Q ★★★

Q Q Q

EFB

.08 ( a p )

★ ★ ★

.04

( f )

0

27°

.016 .008

( f ) TNMG330.5EFA TNMG160402N-FA .0078 QQQQQQQQQQQQQQQQQQQQQQQ ★★★★ QQ Q TNMG331EFA TNMG160404N-FA .0156 QQQQQQQQQQQQQQQQQQQQQQQ ●★★● QQ Q TNMG332EFA TNMG160408N-FA .0313 QQQQQQQQQQQQQQQQQQQQQQQ ●● ● QQ Q

EFA

( a p )

.08

.04

0

20°

.016 .008

B52

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