Selection Guide

External grooving

5 Narrow part extension chart 30 4

GNDL

Expanded 3 20

GNDLS GNDM

Expanded

GWC/GWCSGNDMGNDMGNDL
dedanded
ExpanExp
2For small latheFor small latheFor small latheGNDMS

10 GNDS 1 SGE GWC/GWC/

5 GWB

GWCSGWCS

For hardened steel

0 1 2 3 4 5 0 1 2 3 4 5 6 7 8 9 10

width (mm) width (mm)

  • External Grooving Tools

* mark: For groove depth and width combinations, see the chart above or the relevant page.

Structure

Depth*10203040 (mm)
ShapeInsert shape
TypeCharacteristics

( ): Number of corners Width*

2 4 6 8 10(mm)

F GWC High rigidity double clamp

5.0 (Inserts for MINI Tool holders are screwed on.)

  • 3-cornered insert
→4.8・
F40.33Inserts with breakers stocked

GWCS 5.0 (3) L-styled (horizontal) GWC type holder

  • 4.8
F5(standard, with chipbreaker)0.33
GWB・
5.0High rigidity double clamp
Grooving・
(1)Suitable for intermittent machining of hardened

Traverse 1.5 6.0 steel with coated SUMIBORON

Cut-OffFor hardened steel→F41
machining possible
ThreadingSGE・
8.0Traverse machining (groove widening) is

Traverse (2) possible

machining possible 3.0 6.0

F30 GNDS Suppresses chatter with its high rigidity design. 10.0

  • Short tool overhang enables highly efficient

2.0 6.0 grooving and traverse machining.

F24 GNDM 12.0 Suppresses chatter with its high rigidity design. Small tool

(2) 16mm square shanks are available

→1.253.0
ExpandedF22
GNDM(2)18.0・
Suppresses chatter with its high rigidity design.
Traverse・ Best suited for traverse machining and copying

anded 1.25 8.0

Exp →F26 machining possible

GNDMS 23.0

  • L-styled (horizontal) GNDM type holder

3.0 6.0

F26 GNDL 16.0 Suppresses chatter with its high rigidity design. Small tool

10, 12, 16mm square shanks are available

→1.253.0
andedF22
Exp
GNDL(2)・ Suppresses chatter with its high rigidity design.
25.0・
Best suited for grooving, deep grooving and
Expandedcut-off applications

1.25 8.0

F28 (2) GNDLS 25.0

  • L-styled (horizontal) GNDM type holder

2.0 6.0

F28 You can use the SUMIBORON grooving tool BNGG type (→F42) for hardened steel.

  • Necking Tools

Structure Depth* 10 20 30 (mm)

TypeShapeInsert shapeWork dia.
Characteristics
( ): Number of cornersWidth*2468(mm)(mm)
GNDN
4.0From・
Undercutting on corners possible
(2)2.06.0ø20

→F31