NTK Cutting Tools

CTP/CTPA-TH Chipbreaker

For cut-off operations for diameters up to 16mm| Swiss CNC lathes

Special design for stainless steel cut-off applications
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Strong cutting edge achieves stable cut-off operations on stainless steel

Eliminates chipping on cutting edge that is common during part cut-off operations
Features
  • Best selling CTP series inserts specializing in machining difficult to cut stainless steels ( SUS304,SUS316,SUS630 304 SS, 316SS, 630SS )
  • TH chipbreaker’s strong cutting edge eliminates common issue of edge chipping to ensure stable machining
  • Effective for austenitic and precipitation hardened stainless steels with high nickel content
Tooling application

Swiss CNC lathe Cut-off operations

Cutting edge comparison

Cutting edge with land feature and sharpness improves insert strength

[ Cutting conditions ]
Material : SUS304 ⌀11 mm  vc = 80m/min  f (x) = 0.03mm/rev 304SS ⌀.433 inches 270 SFM f (x) = .001 IPR
[ Tools used ]
Insert : CTP-TH 2.0mm .079 inch width  Holder : CTPR12

- - - Scroll the table - - -
Maximum cut-off diamter
Coated grade Material Operation type Cutting speed (m/min) Cutting speed (SFM) Feed (mm/rev) Feed (IPR) CTP type CTPA type
ST4 Stainless Cut off 30 – 150 100 – 500 0.02 – 0.07 .0008”/rev φ12 φ.472” φ16 φ.630”
Bearing
Material :
SUS420J2
Cutting speed :
30 m/min 100 SFM
Feed :
0.015 mm/rev .001 IPR
Coolant :
WET
TH chipbreaker ST4 CTP15FR-TH
30,000 pcs / corner
Competitor’s wiper insert (PVD coated carbide)
20,000 pcs / corner

TH chipbreaker achieved stable machining by preventing insert edge chipping.
The ST4 grade, specializing in machining stainless steel, extended tool life by 1.5 times compared to competitor’s insert.

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