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DNMG 150608 MY 8220 Insert Pilot
55° Rhombic
Rhombic DNMG11 and 15 inserts with two helical cutting edges.
For finishing, medium and roughing conditions.
"Pilot" is used for the purpose of correcting the feed error immediately before carrying out the cutting.
A pilot is basically a round hole, and the error is corrected by inserting a shaft with a pointed tip (a pilot punch) inside this hole.
There are two methods of using the hole.