Sumitomo General Catalog 2025-2026

Turning Triangular Negative Inserts

Indexable Insert

RE

TN Triangular Neg. With Hole TN ¢¢ 43 ˜ Dimensions (inch) Cutting Edge Length L .8661 Thickness S .1875 Inscribed Circle IC .5000 Hole Dia. D1 .2031

IC

Grade Selection

A2, A3

Chipbreaker Selection B10 on Insert Grade Selection by Part Material

A10 on

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

B

L73

B132

SUMIBORON (CBN) Inserts

Ceramic Inserts

Coated Cermet

Coated Carbide

Carbide

Cermet

C20

E23

Applicable External Holders

Applicable Internal Holders

Nose Radius

Application Range

Shape

Sumitomo Cat. No.

ISO Cat. No.

RE

TNMG431ESX TNMG220404N-SX TNMG432ESX TNMG220408N-SX TNMG433ESX TNMG220412N-SX TNMG432EUP TNMG220408N-UP TNMG433EUP TNMG220412N-UP TNMG431EGU TNMG220404N-GU TNMG432EGU TNMG220408N-GU TNMG433EGU TNMG220412N-GU TNMG432EGE TNMG220408N-GE TNMG433EGE TNMG220412N-GE

Q Q Q

QQQQQ QQ QQQQQ QQ QQQQQ QQ

ESX

.0156 DDDD FF .0313 D  DD FF

( a p )

.08

.0469 D  D 

FF

.04

( f )

0

.008

.016

Q  DD F

QQQQQ QQ QQQQQ QQ

EUP

DD FF

( a p )

.0313 .0469

.08 .04 .12 .16

Q

D FF

( f )

0

10°

.008 .016 .024

C

Q Q Q

QQQQQ QQ QQQQQ QQ QQQQQ QQ

EGU

DD F

 DD

( a p )

.0156

.08 .16 .24

.0313 DDDDFFF D F  DD .0469  DD  FFF D F  DD

( f )

0

.008 .016 .024

Q Q

QQQQQ QQ QQQQQ QQ

EGE

.0313  DDDFFF

( a p )

D

.08 .16 .24

.0469  DDD

( f )

0

.008 .016 .024

TNMG432EUX TNMG220408N-UX TNMG433EUX TNMG220412N-UX

Q Q

QQQQQ QQ QQQQQ QQ

EUX

R

.0313 D  DDFFF

( a p )

0 .08 .16 .24

.0469 D 

FF

( f )

0 °

.008 .016 .024

TNMG432ENG TNMG220408N-UG TNMG433ENG TNMG220412N-UG TNMG434ENG TNMG220416N-UG TNPR431M TNGG220404R-UM TNPL431M TNGG220404L-UM TNPR432M TNGG220408R-UM TNPL432M TNGG220408L-UM

Q Q Q

QQQQQ QQ QQQQQ QQ QQQQQ QQ

ENG

DDD FF

( a p )

.0313

S

.08 .16 .24

.0469 DDDD FF

D F

.0625

( f )

0

.008 .016 .024

.0156 QQQQQQQQQQQQQQQQQQQQQQQ .0156 QQQQQQQQQQQQQQQQQQQQQQQ .0313 QQQQQQQQQQQQQQQQQQQQQQQ .0313 QQQQQQQQQQQQQQQQQQQQQQQ

 D QQ Q  D QQ Q  D QQ Q  D QQ Q

0 .08 .04 .12 .16 ( a p )

(R/L)M

T

( f )

0 °

.008 .016 .024

TNMA432 TNMA433 TNMA434

TNMA220408 TNMA220412 TNMA220416

 DF Q DDDF Q  D  F Q

QQQQQ QQ QQQQQ QQ QQQQQ QQ

.0313 .0469 .0625

V

Q

W

B57

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