DNMG 150608 / DNMG 442, chip breaker BF, grade FM2533 — negative 55° rhombic turning insert.
1/2" inscribed circle, 1/4" thick, 1/32" corner radius. The BF breaker is the finishing geometry: 0.002–0.010 ipr (0.05–0.25 mm/rev) at 0.02–0.06" (0.5–1.5 mm) depth of cut. FM2533 is a CVD grade — stable steel applications and nodular cast iron — a balance of wear resistance and chipping resistance.
TURNING KNOW-HOW
Practical guides to choosing, understanding and using your inserts.
Explore the grade and chip-breaker selection chart for your turning operation.
Explore the chart 02 / INSERT CODESUnderstand turning-insert designations and what the letters and numbers mean.
Read the guide 03 / CUTTING PARAMETERSLearn how to use a turning formula calculator to work through the numbers.
Explore the formulas