CTP/CTPA-THchipbreakerFor cut-off operations for diameters up to .630"| Swiss CNC lathe

Special design for stainless steel cut-off applications

Strong cutting edge achieves stable cut-off operations on stainless steel

Eliminates chipping on cutting edge that is common during part cut-off operations


  • Best selling CTP series inserts specializing in machining difficult to cut stainless steels (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 : 304SS φ.433" 270 SFM f (x) = .001 IPR
[ Tools used ]
Insert : CTP type .079 inch width Holder : CTPR12

Cutting conditions

Scroll the table →

Maximum cut-off diamter
Coated grade Material Operation type Cutting speed (SFM) Feed (IPR) CTP type CTPA type
ST4 Stainless Cut off 100 - 500 .001 - .003 φ.472" φ.630"

Case study

Material :
Cutting speed :
100 SFM
Feed :
.001 IPR
Coolant :
TH chipbreaker

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.。

Tool lineup