Page 543 - ISCAR(TURNING-CATALOG-42-2022)

USER GUIDE
PARTING
PARTING

Lead Angle Neutral Insert vs. Lead Angle Type
Lead angle (K) on cut-off inserts reduces size of burr
remaining on workpiece. Increasing the lead angle reduces
the burr, but also reduces possible feed rates and tool life.
Therefore, neutral inserts are recommended for parts on
which a burr is tolerated.
Insert designations such as TAG R... DGR (R.H.)
and TAG L... DGL (L.H.) comply with standard
terms for turning direction. When looking toward the Lifetime 4
chuck from the workpiece, R.H.=counterclockwise
(C.C.) rotation of workpiece and L.H.=clockwise
(C) rotation of workpiece. C.C. requires right-hand
inserts; C requires left-hand inserts. A neutral insert
with 0º lead angle increases D.O.C. capacity. Chip Control 4
Left Neutral Right
TAG L/DGL TAG N/DGN TAG R/DGR
K Burr Size 4

Surface Finish 4

Part
Straightness 4

TAGR/GFR/DGR TAGR/GFN/DGN

TAG R/DGR TAG N/DGN

TAG R/DGR-WRONG

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