Sumitomo General Catalog 2025-2026

Grooving Tools GNDL

External Deep Grooving and Cut-Off GND

External

External Grooving GNDL

Fig 1

CDX

Figure shows right hand (R) tool.

Holder

Parts

Dimensions (inch/ mm )

Cutting Edge Distance

Cutting Edge Height

Max. Groove Depth Applicable Insert

Overall Length

Stock

Cap Screw Wrench

Height Width

Head

Seat Size

BX0520

Cat. No.

Fig

R L

N m

H B LFWFHFLH

CDX

BX0620

GNDL R/L 122K-075 GNDL R/L 123K-075 GNDL R/L 124K-100 GNDL R/L 125K-100 GNDL R/L 126K-100 GNDL R/L 162M-075 GNDL R/L 163M-075 GNDL R/L 164M-100 GNDL R/L 165M-100 GNDL R/L 166M-100 GNDL R/L 168M-100 GNDL R/L 203P-090 GNDL R/L 204P-100 GNDL R/L 205P-100 GNDL R/L 206P-100 GNDL R/L 207P-100 GNDL R/L 208P-100 GNDL R/L 2020K-220 GNDL R/L 2020K-320 GNDL R/L 2020K-425 GNDL R/L 2020K-525 GNDL R/L 2020K-625

● ● .750 .750 5.00 .750 .750 1.752 2 .750 GC □□ 20 ○○ - □□ 1 ● ● .750 .750 5.00 .750 .750 1.752 3 .750 GC □□ 3 ○○○ - □□ 1 ● ● .750 .750 5.00 .750 .750 1.969 4 1.000 GC □□ 40 ○○ - □□ 1 ● ● .750 .750 5.00 .750 .750 1.969 5 1.000 GC □ N5 ○○○ - □□ 1 ● ● .750 .750 5.00 .750 .750 1.969 6 1.000 GC □ N6 ○○○ - □□ 1 ● ● 1.00 1.00 6.00 1.00 1.00 1.752 2 .750 GC □□ 20 ○○ - □□ 1 ● ● 1.00 1.00 6.00 1.00 1.00 1.752 3 .750 GC □□ 3 ○○○ - □□ 1 ● ● 1.00 1.00 6.00 1.00 1.00 1.969 4 1.000 GC □□ 40 ○○ - □□ 1 ● ● 1.00 1.00 6.00 1.00 1.00 1.969 5 1.000 GC □ N5 ○○○ - □□ 1 ● ● 1.00 1.00 6.00 1.00 1.00 1.969 6 1.000 GC □ N6 ○○○ - □□ 1 ● ● 1.25 1.25 7.00 1.25 1.25 1.875 3 0.900 GC □□ 3 ○○○ - □□ 1 ● ● 1.25 1.25 7.00 1.25 1.25 2.000 4 1.000 GC □□ 40 ○○ - □□ 1 ● ● 1.25 1.25 7.00 1.25 1.25 2.000 5 1.000 GC □ N5 ○○○ - □□ 1 ● ● 1.25 1.25 7.00 1.25 1.25 2.000 6 1.000 GC □ N6 ○○○ - □□ 1 ● ● 1.00 1.00 6.00 1.00 1.00 1.969 8 1.000 GCMN80 ○○ - □□ 1 ● ● 1.25 1.25 7.00 1.25 1.25 2.000 7 1.000 GCMN70 ○○ - □□ 1 ● ● 1.25 1.25 7.00 1.25 1.25 2.000 8 1.000 GCMN80 ○○ - □□ 1

BX0520 5.0 LH040

BX0620 6.0 LH050

GNDL R/L 2020K-1.2516  20 20 125 20 20 38.0 1.25 GNDL R/L 2020K-1.516  20 20 125 20 20 38.0 1.5

16 GCMN125005-GF 1 16 GCMN150005-GF 1 20 ( 18 ) GC □□ 20 ○○ - □□ 1 20 ( 18 ) GC □□ 3 ○○○ - □□ 1 25 ( 23 ) GC □□ 40 ○○ - □□ 1 25 ( 23 ) GC □ N5 ○○○ - □□ 1 25 ( 23 ) GC □ N6 ○○○ - □□ 1 16 GCMN125005-GF 1 16 GCMN150005-GF 1 20 ( 18 ) GC □□ 20 ○○ - □□ 1 20 ( 18 ) GC □□ 3 ○○○ - □□ 1 25 ( 23 ) GC □□ 40 ○○ - □□ 1 25 ( 23 ) GC □ N5 ○○○ - □□ 1 25 ( 23 ) GC □ N6 ○○○ - □□ 1 20 ( 18 ) GC □□ 3 ○○○ - □□ 1 25 ( 23 ) GC □□ 40 ○○ - □□ 1 25 ( 23 ) GC □ N5 ○○○ - □□ 1 25 ( 23 ) GC □ N6 ○○○ - □□ 1 25 ( 23 ) GCMN70 ○○ - □□ 1 25 ( 23 ) GCMN80 ○○ - □□ 1 20 ( 18 ) GC □□ 3 ○○○ - □□ 1 25 ( 23 ) GC □□ 40 ○○ - □□ 1 25 ( 23 ) GC □ N5 ○○○ - □□ 1 25 ( 23 ) GC □ N6 ○○○ - □□ 1 25 ( 23 ) GCMN70 ○○ - □□ 1

 20 20 125 20 20 44.5 2  20 20 125 20 20 44.5 3  20 20 125 20 20 50.0 4  20 20 125 20 20 50.0 5  20 20 125 20 20 50.0 6

BX0520 5.0 LH040

GNDL R/L 2525M-1.2516  25 25 150 25 25 40.0 1.25 GNDL R/L 2525M-1.516  25 25 150 25 25 40.0 1.5 GNDL R/L 2525M-220  25 25 150 25 25 44.5 2 GNDL R/L 2525M-320  25 25 150 25 25 44.5 3 GNDL R/L 2525M-425  25 25 150 25 25 50.0 4 GNDL R/L 2525M-525  25 25 150 25 25 50.0 5 GNDL R/L 2525M-625  25 25 150 25 25 50.0 6

BX0520 5.0 LH040

GNDL R/L 3225P-320 GNDL R/L 3225P-425 GNDL R/L 3225P-525 GNDL R/L 3225P-625 GNDL R/L 3225P-725 GNDL R/L 3225P-825 GNDL R/L 3232P-320 GNDL R/L 3232P-425 GNDL R/L 3232P-525 GNDL R/L 3232P-625 GNDL R/L 3232P-725 GNDL R/L 3232P-825

32 25 170 25 32 44.5 32 25 170 25 32 50.0 32 25 170 25 32 50.0 32 25 170 25 32 50.0 32 25 170 25 32 50.0 32 25 170 25 32 50.0

3 4 5 6 7 8

BX0520 5.0 LH040

BX0620 6.0 LH050

 32 32 170 32 32 44.5 3  32 32 170 32 32 50.0 4  32 32 170 32 32 50.0 5  32 32 170 32 32 50.0 6  32 32 170 32 32 50.0 7  32 32 170 32 32 50.0 8

BX0620 6.0 LH050

25 ( 23 ) GCMN80 ○○ - □□ 1 Dimensions in parentheses under maximum groove depth are for profiling inserts (RG type/RN chipbreakers). Combine the insert with a holder such that the Seat Size matches. Refer to page F21-F22 for applicable inserts See GNDL-JX (holders for small lathes) on page F23

 : Worldwide Warehouse Item ●: USA Stocked Item

F14 & F15

Recommended Cutting Conditions

N m Recommended Tightening Torque (N·m)

F27

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