Sandvik Coromant Parting and grooving - users guide - Manual (Page 41)

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Undercutting
On many components there is a need for
a grinding operation to achieve very close
tolerances. In order to grind into a shoulder
a clearance is needed. For this undercutting
operation we recommend the use of round
shaped inserts. For small clearance depths
use CoroCut 1- or 2-edge inserts with RO
or RM geometries and for larger clearance
depths Q-Cut with 4U geometry is the best
choice.
Recommended grade and cutting data
Starting grade GC1125.
Cutting speed 150 m/min and feed 0.07 mm/r.
RX/LX holder RAX/LAX holder RS/LS151.22 holder
Toolholders
Use CoroCut toolholders type RX/LX with insert angle 7°, 45° or 70°. For internal opera-
tions RAX/LAX style bars are available.
For external machining with Q-Cut, Coromant Capto and toolholders type RS/LS151.22 are
available.