AM – Bearing – T9225


High productivity
- AM chipbreaker increases the feed rate by 1.8 times compared to the competitor due to its unique “Lift-Ridge” shape and special protrusion, drastically reducing the cycle time.

Stable cutting
- The cutting edge with inclination provides low cutting force. In internal machining, AM chipbreaker delivers stable cutting without chattering even at the feed rate that is 1.8 times higher than the competitor.

Industry Automotive
Component Bearing
Material ISO code P - SteelP - Steel
Work material S45C
Machine(spindle type) CNC Lathe
Tool family Turning
Tool category Internal turning
Product name AM-Chipbreaker
TSR No. 441T


Tungaloy Competitor
Holder A25R-PCLNR12-D320 A25R-PCLNR12-D320
Insert CNMG120408-AM CNMG120408-Medium chip breaker
Grade T9225 CVD(P25)

Cutting conditions

Tungaloy Competitor
Cutting speed V/c (mm/min) 150 150
Feed f (mm/rev) 0.25 0.14
Depth of cut ap (mm) 1.5 1.5
Coolant wet wet


Productivity1.8 times