Sumitomo General Catalog 2025-2026

SUMIBORON CBN Insert C 80° Diamond CNG32 ˜ Uncoated Dimensions (inch) Thickness .1250

Indexable Insert

: 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

Recommended Application

Q

Inscribed Circle .3750 Hole Dia.

L

C45

Applicable External Holders

Uncoated CBN

Solid / Negative (Without 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.

CNG322 CNG323

CNGN090308 CNGN090312

.0313 .3740

D

.0469 .3701

Standard

1 Solid

D

C

: 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

CNG43 ˜ Uncoated Dimensions (inch) Thickness .1875

Recommended Application

Q

Inscribed Circle .5000 Hole Dia.

D

L109

Applicable External Holders

Uncoated CBN

Solid / Negative (Dimple Lock)

R

Effective Cutting Edge Length LE

Nose Radius RE

No. of Cutting Edges

Pcs/ Pack

Cutting Edge Specification

Shape

Sumitomo Cat. No.

ISO Cat. No.

CNGX433 CNGX434

CNGX120412 CNGX120416

.0469 .4961

D

S

.0625 .4921

Standard

1 Solid

D

C44

Applicable External Holders

T

Solid / Negative (Without 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.

V

CNG432 CNG433 CNG434

CNGN120408 CNGN120412 CNGN120416

.0313 .5000

D

.0469 .4961

Standard

1 Solid

 

.0625 .4921

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)

L35

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