Sumitomo General Catalog 2025-2026

Grooving Tools GND

Traverse Cutting / Proling (Cut-off)

*Single Sided Insert Grooving/Cut-off (Horizontal Feed) GNDXL

Grooving / Cut-off (Traverse Cutting)

GNDM Straight Type

GNDL Straight Type

GNDM-J Straight Type

GNDL-J Straight Type

GNDS Straight Type

Internal Coolant Supply

For Shallow Grooves

Internal Coolant Supply

Shank Size (H x W) .750” x .750” 1.00” x 1.00” 1.25” x 1.25”

Shank Size (H x W) .750” x .750” 1.00” x 1.00” 1.25” x 1.25”

Straight Type

For External Turning (Straight Type)

Shank Size (H x W) .750” x .750” 1.00” x 1.00”

GNDXL: For Outer Diameter Machining (Straight Type) Groove Depth ~1.260”/ 32mm )

Shank Size (H x W) .750” x .750” 1.00” x 1.00”

Shank Size (H x W) .750” x .750” 1.00” x 1.00”

20 × 20mm 25 × 25mm 32 × 25mm 32 × 32mm

20 × 20mm 25 × 25mm 32 × 25mm 32 × 32mm F25

Shank Size (H x W) 20 × 20mm 25 × 25mm

20 × 20mm 25 × 25mm

20 × 20mm 25 × 25mm

20 × 20mm 25 × 25mm

F33

F32

F26

F27

F28

Seat Size 1.25 1.5 2.0 3.0 4.0 5.0 6.0 7.0 8.0 Applicable Chipbreaker MG ML GG GL GF CG CF RG RN GA

Seat Size 1.25 1.5 2.0 3.0 4.0 5.0 6.0 7.0 8.0 Applicable Chipbreaker MG ML GG GL GF CG CF RG RN GA

Seat Size

Seat Size 1.25 1.5 2.0 3.0 4.0 5.0 6.0 7.0 8.0 Applicable Chipbreaker MG ML GG GL GF CG CF RG RN GA

Seat Size 1.25 1.5 2.0 3.0 4.0 5.0 6.0 7.0 8.0 Applicable Chipbreaker MG ML GG GL GF CG CF RG RN GA

Seat Size 1.25 1.5 2.0 3.0 4.0 5.0 6.0 7.0 8.0 Applicable Chipbreaker MG ML GG GL GF CG CF RG RN GA

2.0 3.0 4.0 5.0 6.0 Applicable Chipbreaker ML GF RN

F

For External Turning Straight Type Series Overview

MG : Multi-functional / General-purpose ML : Multi-functional / Low-feed GG : Grooving / General-purpose GL : Grooving / Low-feed

GF : Grooving / Low cutting force GA : Non-ferrous Metal / General-purpose

CG : Cut-off / General-purpose

CF : Cut-off / Low cutting force

RG : Proling / General-purpose RN : Facing / Necking / General-purpose

Shank Size (Inch)

Seat Size

Maximum Groove Depth (Inch)

Applicable Chipbreakers

Ref. Page

Series

.197 .394 .591 .787 1.000 1.181

MG ML GG GL GF CG CF RG RN GA

Height (H) Width (B) 1.251.5 2 3 4 5 6 7 8

G G S S G G S S G G S S G G S S G S G S G S G S

G G G G G G G G G G G G G G G G G G G G G G G G

G G G G G G G G G G G G G G G G G G G G G G G G

G G G G G G G G G G G G G G G G G G G G G G G G

.500 .500

2 2 2 2

F25 F26 F27 F28 F25 F26 F27 F28 F25 F26 F27 F28 F25 F26 F27 F28 F25 F27 F25 F27 F25 F27 F25 F27

GNDM GNDM-J GNDL GNDL-J GNDM GNDM-J GNDL GNDL-J GNDM GNDM-J GNDL GNDL-J GNDM GNDM-J GNDL GNDL-J GNDM GNDL GNDM GNDL GNDM GNDL GNDM GNDL

Internal Coolant Supply

G G G G G G G G G G

G G G G G G

G G G G G S S S S S S S S S S S S S S

G G G G G G G G G G G G G G G G G G G

.750 .750

Internal Coolant Supply

G G S S G G S S G G S S G S G S G S G S

G G G G G G G G G G G G G G G G G G G G

.500 .500

3 3 3 3

.750 1.00

.750 1.00

Internal Coolant Supply

.750 .750

Internal Coolant Supply

4 4 4 4

.700 .700

Internal Coolant Supply

1.000 1.000

Internal Coolant Supply

.700 .700

5

6

5 6 5 6 5 6

Internal Coolant Supply

1.000 1.000

Internal Coolant Supply

G G G G

G G

.500

3 3

.900

.700

4 4

1.000

1.250 1.250

.700

5

6

1.000

5 6

.700

7 8 7 8

1.000

Shank Size ( mm )

Maximum Groove Depth ( mm )

Seat Size

Applicable Chipbreakers

Ref. Page

Series

MG ML GG GL GF CG CF RG RN GA

5

10

15

20

25

30

Height (H)

Width (B)

1.251.52 3 4 5 6 7 8

G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G

10

GNDM GNDL GNDS GNDM GNDM-J GNDL GNDL-J GNDS GNDM GNDM-J GNDL GNDL-J GNDS GNDM GNDM-J GNDL GNDL-J GNDS GNDM GNDM-J GNDL GNDL-J GNDM GNDL GNDM GNDL GNDM GNDL GNDM GNDL GNDM GNDL

1.251.5 1.251.5

F25 F27 F32 F25 F26 F27 F28 F32 F25 F26 F27 F28 F32 F25 F26 F27 F28 F32 F25 F26 F27 F28 F25 F27 F25 F27 F25 F27 F25 F27 F25 F27

16

G G G S S G G G S S G G G S S G G G S S G S G S G S G S G S

G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G

G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G

G G G G G G G G G G G G G G G

G G G G G G G G G G

G G G G G S S S S S S S S S S S S S S S S S S S S S

G G G G G G G G G G G G G G G G G G G G G G G G G G

6

2 2 2 2 2

10 10

Internal Coolant Supply

20 20

Internal Coolant Supply

G G G S S G G G S S G G G S S G S G S G S G S G S

G G G G G G G G G G G G G G G G G G G G G G G G G

6

3 3 3 3 3

12 12

Internal Coolant Supply

20 20

20 25

20 25

Internal Coolant Supply

10

4 4 4 4 4

18 18

Internal Coolant Supply

25 25

Internal Coolant Supply

10

5

6

18 18

5 6 5 6 5 6 5 6

Internal Coolant Supply

25 25

Internal Coolant Supply

18

7

8

25

7 8

G G G G

G G

12

3 3

20

18

4 4

32 32

25 32

25

18

5

6

25

5 6

18

7

8

25

7 8

Straight Series for Outer Diameter Machining (Groove Depth ~1.260” / 32mm )

: In stock *: Made-to-order item (Shank size ¨32 x 25mm)

ML Multi-Functional / General-Purpose GF Grooving / Low Cutting Force RN Facing / Necking / General-Purpose

Shank Size (Inch)

Maximum Groove Depth (Inch)

Seat Size

Applicable Chipbreakers (GNDXL Only)

Ref. Page

Series

ML

GF

RN

Height (H)

.197 .394 .591 .787 1.000 1.181 1.378

2 3 4 5 6 Width (B)

S S

G G

S S

F33 F33

1.023

.750 1.00

.750 1.00

2

GNDXL

1.260

3 4 5 6

Shank Size ( mm ) Height (H) Width (B)

Seat Size

Applicable Chipbreakers (GNDXL Only)

Maximum Groove Depth ( mm )

Ref. Page

Series

ML

GF

RN

5

10

15

20

25

30

35

2 3 4 5 6

G : Best S : Suitable

S S

G G

S S

F33 F33

26

2

20 25

20 25

GNDXL

F10

32

3 4 5 6

Available (USA or WWW)

Made to Order Item Note: Only the dedicated one-corner insert (insert part number ending with “1”) can be used with the GNDXL.

G : Best S : Suitable

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