Sumitomo General Catalog 2025-2026

SUMIBORON CBN Insert

Indexable Insert

T Triangular

: 1st Recommended : 2nd Recommended

: 1st Recommended : 2nd Recommended

: 1st Recommended : 2nd Recommended

(Legend) Continuous Cutting

General Cutting

Interrupted Cutting

K Cast Iron S Exotic Alloy H Hardened Steel Sintered Components

TN ¢¢ 33 ˜ Uncoated Dimensions (inch) Inscribed Circle .3750 Hole Dia. Thickness .1875

Recommended Application

.1500

L

C20 to C26

E23 to E25

Applicable External Holders

Applicable Internal Holders

Uncoated CBN

Multi-Cornered Single-Use / Negative (With Hole)

Effective Cutting Edge Length LE

Nose Radius RE

No. of Cutting Edges

Pcs/ Pack

Cutting Edge Specification

Shape

Sumitomo Cat. No.

ISO Cat. No.

3NUTNGG331LV 3NUTNGG332LV 3NUTNGG333LV 3NUTNGA331LF 3NUTNGA332LF

3NU-TNGM160404N-LV 3NU-TNGM160408N-LV 3NU-TNGM160412N-LV 3NU-TNGA160404LF 3NU-TNGA160408LF

.0156 .0906

  

.0313 .0787

S00535

1 3

.0469 .0787

Break Master

.0156 .0906

 F  D F

Sharp Edge

1 3

.0313 .0787

Low Cutting Force

3NU-TNGA160404LE 3NU-TNGA160408LE

3NUTNGA331LE 3NUTNGA332LE

.0156 .0906

 F  F

C

1 3

.0313 .0787

Honing

Low Cutting Force

3NUTNGA331LT 3NUTNGA332LT 3NUTNGA333LT 3NUTNGA331LS 3NUTNGA332LS 3NUTNGA331HS 3NUTNGA332HS 3NUTNGA333HS 3NUTNGA331HT 3NUTNGA332HT 3NUTNGA333HT

3NU-TNGA160404LT 3NU-TNGA160408LT 3NU-TNGA160412LT 3NU-TNGA160404LS 3NU-TNGA160408LS 3NU-TNGA160404HS 3NU-TNGA160408HS 3NU-TNGA160412HS 3NU-TNGA160404HT 3NU-TNGA160408HT 3NU-TNGA160412HT

.0156 .0906 D  .0313 .0787 D D

T01215

1 3

D

.0469 .0787 F D

Sharper Edge

.0156 .0906

 F

R

1 3

.0313 .0787

S00715

F

General-purpose for Continuous Cutting

.0156 .0906

D

 F D D F

BN2000 Ž S01235 BN7000 Ž S01225 BN700 Ž S01225 BN7500 Ž S00525

1 3

.0313 .0787

 

S

.0469 .0787

Strong Edge

.0156 .0906

  

T01235

1 3

.0313 .0787

T

.0469 .0787

Strong Edge

*Depth of cut for single-use types is 0.0197 inch or less.

V

W

CBN Application Range Map

(C) Gray Cast Iron

(D) Ductile Cast Iron

(E) General Powdered Metal (F) High-density Powdered Metal

(G) Titanium Alloy

2,000

500

300

300

300

1,500

400

200

200

200

BNC500

BN7000

1,000

300

BN7500

BN7500

NCB100

BNS800

BN7000

100

100

100

( m/min ) v c

200

500

BN7000

BN500

( m/min ) v c

BN7000

( m/min ) v c

( m/min ) v c

( m/min ) v c

0

0.05 0.10 0.15 0.20 Feed Rate f (mm/rev)

0 0.1 0.3 0.5

0 1.0 2.0 3.0 4.0

Depth of Cut a p ( mm ) Feed Rate f ( mm / rev )

Depth of Cut a p ( mm ) Feed Rate f ( mm / rev )

0 0.1

0.15 0.05 0.1 0.2 0.25 0.3 0.2 0.3 0.4 0.5

0 0.1

0.05 0.1 0.15 0.2 0.25 0.3 0.2 0.3 0.4 0.5

Depth of Cut a p (mm)

Depth of Cut a p (mm)

L69

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