Sumitomo General Catalog 2025-2026

By Cutting Conditions Chipbreaker Selection

Negative Finishing to Medium Cutting

R

S

R

S

C D

C D

T

V

W

T

V

W

Dimensions shown in mm

EGU

EFB

EFA C D

Versatile chipbreaker featuring excellent wear resistance Strong, versatile chipbreaker PMK N S H

Part Material

Chipbreaker

Provides excellent chip control and sharp edge needed for low feed machining PMK N S H

Profile breaker perfect for fine finishing PMK N S H W T V S

R

R

S

C D

T

V

W

Features

Photo

1.0 20°

0.80

0.25 2.05 7° 25° T V S

R

C D

W

Typical Cross Section Shape Cat. No. for Cross Section

R

S

C D

T

V

W

R

S

R

S

C D

C D

T

V

W

T

V

W

27°

Relief Angle Shapes In Stock

CNMG43 ™

CNMG43 ™

CNMG43 ™

R

S

C D

T

V

W

(mm) C D 6

R

S

R

S

C D

T

V

W

T

V

W

R

S

C D

T

V

W

B

(mm)

EFL C D

EFE 4 2 C D

6

Optimal breaker for chip control on rolled steel PMK N S H W T V S

Excellent chip control for low to high feed machining PMK N S H W T V S

R

S

4 C D

T

V

W

R

R

R

S

C D

T

V

W

2

1.40 0.4

0

0.2

0.6

1.0

Feed Rate (mm/rev)

0

0.70

R R

S S

R R

S S

C D C D

C D C D

T T

V V

W W

T T

V V

W W

0.2

0.4 T

0.6

R

S

C D

V

W

10°

Feed Rate (mm/rev)

R

S

C D

T

V

W

20°

CNMG43 ™

CNMG43 ™

R R

S S

R R

S S

C D C D

C D C D

T T

V V

W W

T T

V V

W W

R

S

C D

T

V

W

(mm)

R

S

C D

T

V

W

6

J=Uncoated, polished grade for Non-Ferrous materials PMK N S H ESU(J) Effective at high feed and low depth of cut 0.6 W W C D C D T T R R V V S S

4

2 ELU Effective chip control for variable depths of cut and profiling PMK N S H 0.2 0.4 0 W W C D C D T T R R V V S S

ESE C D

EEF

C D Exotic alloy finishing breaker with excellent chip control PMK N S H 1.2 20° R C D R W T V S

S

T

V

W

Finishing breaker reduces tool wear on rake face. Effective even for high-efficiency machining. PMK N S H W T V S

R

1.3

Feed Rate (mm/rev)

1.5

R R

S S

R R

S S

C D C D

C D C D

T T

V V

W W

T T

V V

W W

1.5

S

T

V

W

0.1

13°

R

S

R

C D

C D

T

V

W

1.0

17°

10°

C D C D 0°

C D C D (mm) 0°

R R

S S

R R

S S

CNMG43 ™

CNMG43 ™

CNMG43 ™

CNMG43 ™

T T

V V

W W

T T

V V

W W

R

S

C D

T

V

W

(mm)

(mm)

C

R

S

R

S

6 C D

C D

T

V

W

T

V

W

6

6

4

4

P ELUW 2

W W ESEW New high-feed finishing breaker with wiper edge PMK N S H C D C D T T R R V V S S 4 2 G Class M Class

2 (R/L)FX C D R

W PMK N S H (R/L)FY (R/L)Q Wide breaker with sharp edge C D T FT Type R V C D S W C D T R V S R

SJ Ty

MK N S H

W PMK N S H Parallel breaker with superior sharp edge T V S

PMK N S H Arc-shaped ground finishing breaker W T V S

R R

S S

C D C D

T T

V V

W W

High-efficiency finishing breaker with wiper edge

0

0

0.2

0.4

0.6

0.4 1.5

1.9

0.2

0.6

1.35

2.5

0

1.5

0.2 0.13

Feed Rate (mm/rev)

Feed Rate (mm/rev)

D

0.4

0.6

0.15

14°

R R

S S

R R

S S

C D C D

C D C D

T T

V V

W W

T T

V V

W W

R 15°

S

C D

W R

S

Feed Rate (mm/rev)

T C D V

T

V

W

1.0

17°

R

S

R

S

C D

C D

T

V

W

T

V

W

Wiper Insert

Wiper Insert

10°

CNMG43 ™

CNMG43 ™

TNP33 ™

TNP33 ™

TNP22 ™

(mm) 6

(mm)

R R

S S

R R

S S

C D C D

C D C D

T T

V V

W W

T T

V V

W W

R

S

C D T

W R

S

D

R R

S S

D

R R

S S

T C D V

C

C

T

V

W

T T

V V

W W

V V

W W

6

C D

C D

T

(mm)

R

6

4

(mm)

4

6

4

2

2

C D C D EFJ SJ Type R R

C D (R/L)GX 4 2

S S

C D C D (R/L)T R R

S S 0.2

T T

V V 0.4

W W

T T

V V

W W

C D UM Type R W V S

S

W R

S

T C D V

T

V

W

0 SJ Type

ST Type

0 ST Type

R GX Type

T GX Type V

T UM Type 2

SJ Type

0.6 ST Type

S GX Type

R UM Type

Feed Rate (mm/rev) Standard chipbreaker with excellent cutting edge strength 0.2 PMK N S H

Feed Rate (mm/rev) Arc-shaped ground breaker for light cutting PMK N S H 0.4

W Double positive chipbreaker providing superior sharpness PMK N S H

C D

0.6 0.7

0

0.2

0.4

0.6

1.5

1.5

T C D V 2.0

2.0

1.35

1.35

0

S

1.5

1.2

1.2

W 0.15 2.0

5 5

1.65

1.65

S S 1.2 0.18

Feed Rate (mm/rev)

R R

R R

S S

C D C D

C D C D

T T

V V

W W

T T

V V

W W

1.65

R

S

C D 0.15

0.2

0.4

0.6

W R

S

T

V

W

0.15

0.15

0.18

0.15

0.15

0.18

Feed Rate (mm/rev)

15°

15°

T 15°

R

S

R

S

C D

C D

V

W

T

V

14°

14°

14°

MM Type

C Type

C D C D 0°

SNMG43 ™

TNP32 ™

SNGG43 ™

R R

S S

R R

S S

C D C D 0°

T T

V V

W W

T T

V V

W W

R

S

C D

W R

S

T C D V

T

V

W

R

S

R

S

C D

C D

2.95

T

V

W

T

V

W

0.15

T

C D C D ESX

W EUP Double positive edge for optimal stainless steel cutting PMK N S H C D T R V S

C D C D EEX

10°

W W Standard chipbreaker designed especially for use with exotic alloys PMK N S H T T V V S S

W W Perform profiling and raise steps PMK N S H T T V V S S

R R

R R

R

S

C D

W R

S

T C D V

T

V

W

R

S

C D

T

V

W

2.0

1.35

2.1

R R

S S

R R

S S

C D C D

C D C D

T T

V V

W W

T T

V V

W W

R

S

C D

10°

W R

S

0.2

T C D V

T

V

W

15° T V S

16° T V S

R R

S S

C D C D

T T

V V

W W

R

S

C D

T

V

W

V

C Type 0°

C D C D C Type R R

FP Type 0°

FP Type (mm)

C Type

C D C D FP Type R R 6

Bumpy Chipbreaker

Standard Chipbreaker

W For Chamfering T V S Handed Chipbreaker

CNMG43 ™

CNMG43 ™

CNMG43 ™

S S

S S

T T

V V

W W

T T

V V

W W

C D Break Master (CBN/PCD) R S

W R

T C D V

T V S

T V S

R R

S S

C D C D

T T

V V

W W

R

S

C D

T

V

W

2.15

2.15

2.95

2.95

1.40

1.40

0.15 2.15

95

1.40

(mm)

0.15

(mm)

0.15

6

Applicable Part Material: P Steel M Stainless Steel K Cast Iron N Non-Ferrous Metal S Exotic Alloy H Hardened Steel 4

W

6

W W 10°

10°

10°

R R

S S

R R 2

S S

C D C D

C D C D

W FW Type T C D V R S

SS Ty

T T 4

V V

W W

T T

V V

R

S

C D

T

V

W

14° T V S 14°

T V S

R R

S S

C D C D 4

T T

V V

W W

10°

10°

°

14°

R

S

C D

T

V

W

Chipbreaker Application Range (Inscribed Circle of Insert up to ø.5000inch) 2 0 2

0.2

0.4

0.6

0.90

Feed Rate (mm/rev)

0

R R

S S

R R 0.6

S S

C D C D

C D C D 0.4

T T 0

V V

W W

T T

V V

W W

R

S

C D

W R

S

T C D V

T

V

W

T V S

T V S

R R 0.2

S S

C D C D

0.4

0.6

T T

V V

W W

0.2

Feed Rate (mm/rev)

W C D High-precision Cutting (Ground) T R V S

Wiper Insert

Fine Cutting to Finishing Finishing to Light Cutting Feed Rate (mm/rev)

15°

R R

S S

R R

S S

C D C D

C D C D

T T

V V

W W

T T

V V

W W

R

S

C D

T

V

W

T V S

T V S

R R

S S

C D C D

T T

V V

W W

.24

.12

.12

.12

R

S

C D

T

V

W

ESX

.16

.08

.08

.08

ELU

R R

S S

C D C D UJ Type R R S S ESU

C D C D SS Type EFB

T T

V V

W W

T T

V V

W W

EGUW

R

S

C D

T

V

W

T V S

ESE T V S

R

S

C D C D

T

V V

W W

ESU

.04 SS Type

EFA/EFL SS Type

UJ Type

R RD Type

T RD Type S ESEW

T AW Type

W AW Type V S (R/L)FX

R AW Type (R/L)FY

C D

.04 UJ Type

ELUW RD Type

.08

.04

EFE

e

R R

T T 1.15 5° .020 T V S V V S S 5°

R R

S S

0

0

0

0

C D C D .004

C D C D .004

W W

T T

V V

W W

R

S

C D

T

V

W

T V S

R R

S S

C D C D

.012 .024 .035 2.00 2.00 Feed Rate f (inch/rev)

.012

.012

.020

.004

.012

.020

10.5

10.5

0

0.90

T T

V V

W W 2.00

10.5

1.15

1.15

R

S

C D

T

V 25°

W

Feed Rate f (inch/rev)

Feed Rate f (inch/rev)

Feed Rate f (inch/rev)

25°

25°

15°

15°

EM Type C D R

AX Ty

15°

Indicated chipbreaker application ranges and shapes are representative values only. Actual values may change according to the actual catalog number. For details, refer to "Stock Items" in Chapter B.

R R

S S

R R

S S

S

C D C D

C D C D

T T

V V

W W

T T

V V

W W

T

V

W

R R

S S

C D C D

T T

V V

W W

R

S

C D

T

V

W

B10

2.5

0.05

R R

S S

R R

S S

R

S

C D C D

C D C D

C D

T T

V V

W W

T T

V V

W W

T

V

W

R R

S S

C D C D

T T

V V

W W

R

S

C D

T

V

W

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