Sumitomo General Catalog 2025-2026

Turning Triangular Negative Inserts

Indexable Insert

RE

TN Triangular Neg. With Hole

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

TN ¢¢ 22 ˜ Dimensions (inch)

Cutting Edge Length L .4331 Thickness S .1250 Inscribed Circle IC .2500 Hole Dia. D1 .0890

B

Coated Cermet

Coated Carbide

Carbide

Cermet

C20

Applicable External Holders

Nose Radius

Application Range

Shape

Sumitomo Cat. No.

ISO Cat. No.

RE

TNPR220.5Q TNGG110302R-FT .0078 QQQQQQQQQQQQQQQQQQQQQQQ ★

QQ Q

(R/L)Q

.08 ( a p )

TNPL220.5Q TNGG110302L-FT

★★ QQ Q ★★ QQ Q ★● QQ Q

.0078 QQQQQQQQQQQQQQQQQQQQQQQ

.04

TNPR221Q TNGG110304R-FT .0156 QQQQQQQQQQQQQQQQQQQQQQQ

TNPL221Q TNGG110304L-FT

.0156 QQQQQQQQQQQQQQQQQQQQQQQ

( f )

0 °

0

.016 .008

TNMG221ENK TNMG110304N-SK .0156

Q

QQQQQ QQ

ENK

F

( a p )

0 .08 .16 .24

( f )

.008 .016 .024

TNGA222 TNGA110308

.0313 QQQQQQQQQQQQQQQQQQQQQQQ

QQ Q

C

Q

: 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 ¢¢ 2.52 ˜ Dimensions (inch)

D

Cutting Edge Length L .5394 Thickness S .1250 Inscribed Circle IC .3126 Hole Dia. D1 .1240

R

Coated Cermet

Coated Carbide

Carbide

Nose Radius

Application Range

Sumitomo Cat. No.

ISO Cat. No.

Shape

S

RE

TNGG2.521LGX TNGG130304L-GX .0156 QQQQQQQQQQQQQQQQQQQQQQQ TNGG2.522LGX TNGG130308L-GX .0313 QQQQQQQQQQQQQQQQQQQQQQQ

QQ ★ Q QQ ★ Q

(R/L)GX

( a p )

.08

.04

*1

T

( f )

0

15°

.016 .008

*1: Photo shows left hand.

: 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)

V

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

Coated Cermet

Coated Carbide

Carbide

Cermet

W

C20

Applicable External Holders

Nose Radius

Application Range

Shape

Sumitomo Cat. No.

ISO Cat. No.

RE

TNPR320.5T TNGG160302R-ST .0078 QQQQQQQQQQQQQQQQQQQQQQQ

★★ QQ Q ★★ QQ Q ★● QQ Q ★● QQ Q ★● QQ Q ★★ QQ Q

(R/L)T

TNPL320.5T TNGG160302L-ST

.0078 QQQQQQQQQQQQQQQQQQQQQQQ

( a p )

.08

TNPR321T TNGG160304R-ST .0156 QQQQQQQQQQQQQQQQQQQQQQQ

.04

TNPL321T TNGG160304L-ST

.0156 QQQQQQQQQQQQQQQQQQQQQQQ

*1

TNPR322T TNGG160308R-ST .0313 QQQQQQQQQQQQQQQQQQQQQQQ

( f )

0

.016 .008

TNPL322T TNGG160308L-ST

.0313 QQQQQQQQQQQQQQQQQQQQQQQ

0 °

TNMG321ESX TNMG160304N-SX .0156 ★★●● F

Q Q

QQQQQ QQ QQQQQ QQ

ESX

( a p )

TNMG322ESX TNMG160308N-SX .0313 ★★●●

FF

.08

.04

( f )

0

.008

.016

B51

*1: Photo shows left hand.

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