
TURNING INSERTS
CLASSIFICATION
11° POSITIVE INSERTS WITH HOLE
Application
Tolerance
Breaker Name
A Cross Section
and Features
Geometry
Picture
TURNING INSERTS
Chipbreaker for finishing Carbon Steel·Alloy Steel
Flank
Lead chipbreaker controls chip flow.
ap (inch)
Good chip control for low to medium feed rates. 10°
G Class
f (IPR) TPGX1.81.51R
Finishing aluminum alloy Aluminum Alloy
Standard Flank
Lead chipbreaker controls chip flow.
ap (inch)
Good chip control for low to medium feed rates. 25°
f (IPR) CPGT321
Finish Cutting
Finishing Carbon Steel·Alloy Steel
Flank
M Class
Angled chipbreaker controls chip flow.
ap (inch)
Good chip control for low to medium feed rates. 10°
f (IPR) TPMX1.81.51L
Finishing Carbon Steel·Alloy Steel
Flank
E Class
Lead chipbreaker controls chip flow. ap (mm)
Sharp cutting edge produces excellent surface finishes.
f (IPR) VPET1.51.50.2RSRF
Corner
Medium cutting for Swiss style lathes machining Carbon Steel·Alloy Steel
G Class
3D molded chipbreaker provides good chip control.
ap (mm)
G class insert gives sharp cutting action, allowing Flank
high precision machining. 11°
Breaker geometry appropriate for copying and back turning.
M = minus radius tolerance f (IPR) VPGT1.51.50.2MSMG
Carbon Steel·Alloy Steel Corner
Recommendation for light cutting of carbon steel,
Light Cutting
alloy steel, mild steel, stainless steel and cast iron
M Class
ap (inch)
The double breaker design promotes chip discharge for mild steel Flank
and low depth of cut machining applications.
f (IPR) CPMH32.51SV
Carbon Steel·Alloy Steel Corner
Standard Alternative chipbreaker for medium cutting of carbon steel,
alloy steel and stainless steel
ap (inch)
Standard, general purpose chipbreaker. Flank
f (IPR) CPMX321
Medium Cutting
Carbon Steel·Alloy Steel Corner
Recommendation for medium cutting of carbon steel,
alloy steel, mild steel, stainless steel and cast iron
M Class
ap (inch)
A positive land and the high rake angle provides sharp cutting edge
performance. Flank
Double breakers in the rake face achieve a wide range of chip
control. f (IPR) CPMH321MV
Copper Corner
Medium cutting of carbon steel, alloy steel and
stainless steel
ap (inch)
Can be used under a wide range of cutting conditions.
Flank
f (IPR) CPMT32.51MQ
A074