AM3chipbreakerFor front turning operations | Swiss CNC Lathes

Molded chipbreaker with a balance of cutting edge strength and chip control

Stable machining performance due to its toughness and sharp cutting edge

To support 24 hour continuous machining operations

Product video


  • Depth of cut ranges from 0.5 up to 2.0 mm
  • Excellent edge strength for stable machining
  • AM3 -WP wiper style insert guarantees improved cycle time and superior surface finishes

Tooling application

Swiss CNC Lathe front turning operations

AM3 chip control range

Cutting conditions

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Coated grade Material Operation type Cutting speed (m/min) Feed (mm/rev) DOC (mm)
ST4 Stainless OD Turning continuous 50 - 120 0.03 - 0.15 0.5 - 2.0
QM3 Alloy steel / carbon steel / hardened material
DM4/DT4 Difficult-to-cut material / titanium alloy 30 - 100
TM4 Non-ferrous / aluminum / plastic / general purpose  50 - 120

Chipbreaker geometry

① AM3 designed for a wide range of machining from medium to light depths of cut
② Sharp cutting edge for shearing material

Achieves excellent surface finishes even at high feed rates - wiper style insert (AM3-WP)

A. For conventional tools feed rate is reduced to maintain good surface finish which results in chip control issues.
B. If the feed rate is increased, the surface finish will deteriorate.
C. Inserts with a wiper help to maintain chip control and surface finishes even during high feed machining.
*when applying the DCGT... AM3-WP insert, use with our SDJC type holder (lead angle 93 degrees)

Case study

Front turning
Material :
Cutting speed :
55 m/min
Feed :
0.04 mm/rev
0.4 mm

After running 900 parts, the competitor's insert resulted in a dimensional change of 0.041mm while DM4 had better machining stability with parts showing dimensional change of only 0.02mm after the same amount of parts machined.

Front turning
Material :
Cutting speed :
30 ~ 80 m/min
Feed :
0.015 mm/rev
Replacement :
0.15 mm

1,500 pcs / corner

Conventional tool

700 pcs / corner

The current tool resulted in a measured surface finish of Ry = 10.2μm with 500 parts machined and a 0.1mm dimensional change from the start of production.
DT4 achieved dimensional consistency and machined 1000 parts all with surface finish of Ry 2.3 μm.

Tool lineup

View Catalog Information

Please check product catalog for tooling lineup