CUTDUO EXTRACut-off operations for diameters up to φ42| Swiss CNC lathe / Conventional CNC lathe

Cut-off tooling for large diameter workpieces

A highly rigid holder design combined with a molded insert chipbreaker ensures stability

Rigid system supports the process of large-diameter cut-off operations that are subject to high cutting loads
Chip control is achieved with the unique chipbreaker design

Product video


  • Maximum cut-off diameter is φ42
  • 2 sided inserts and width of 3mm
  • GT chipbreaker with unique s-shaped feature ensures straightness and good chip curl

Tooling application

Swiss CNC lathe / Conventional CNC lathe cut-off

Tool rigidity comparison

Rigidity developed to accommodate high load cut-off applications to ensure reliability and productivity.
* The highest clamping strength of any holder currently on the market (according to our research)

Cutting conditions

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Coated grade Material Operation type Cut-off width (mm) Cutting speed (m/min) Feed (mm/rev) Maximum cut-off diamter
DM4 Difficult-to-cut material / titanium alloy Cut off 3.0 50 - 130 0.03 - 0.2 φ42

Chipbreaker geometry

① Straight cutting edge improves toughness
② Folds chips from both edges for tight curls
③ High rake angle for increased sharpness

Chip formation comparison

[ Cutting conditions ]
Material : S45C φ42  vc = 100m/min  WET
[ Tools used ]
Insert : DM4 GWPFM300N02-GT  Holder : CTWPR2020K-3D42

Case study

Coolant control parts
Material :
S45C tempered steel
Cutting speed :
110 m/min
Feed :
0.07 mm/rev
Coolant :

700 pcs / corner

Competitor’s product

350 pcs / corner

CUT DUO EXTRA with its 2 cutting edges significantly reduced cost compared to the competitor's 1 cutting edge insert.
Cut Max achieved excellent chip control and 2 times the tool life.

Tool lineup

View Catalog Information

Please check product catalog for tooling lineup