
Cut-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
Features
- 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
Scroll the table →
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 | |
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CUT DUO EXTRA | 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
Please check product catalog for tooling lineup
Other recommended products
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DT4/DM4Difficult-to-cut materials | Carbide grade for Swiss CNC lathes
Superior heat resistance
-
SCRUM DUOFor grooving| Swiss CNC lathes / Conventional CNC lathes
Highly rigid holder design
-
Mogul barsFor ID boring operations| Swiss CNC lathes
Solves common issues associated with ID boring operations
-
SHAPER DUOFor socket hole machining| Swiss CNC lathes
Highly productive socket hole machining
Useful information
4 STEP-NTK Cutting Tools Lab for choosing suitable cutting tool for cut-off machining
The aspects of "chip control" that you should check when workpiece damage or poor dimensioning are detected during Swiss type CNC automatic lathe machining
Two Areas to Check When Coaxiality is Not Achieved During Swiss CNC Lathe Machining
"Two" checkpoints and measures to be checked when "Roundness" does not come out in Swiss-type CNC-automatic lathe machining-NTK Cutting Tools Lab