The SD chipbreaker provides improved stability and productivity when drilling low strength soft and long-chipping material, where the balance of forces between the inserts becomes more difficult to maintain. The addition means Dormer Pramet now offers a greater choice of grades, geometries and designs of inserts for indexable holemaking.
Marcel Nunes, product manager for indexable holemaking at Dormer Pramet, says: “A key requirement for any indexable drilling task is accurate hole tolerance and straightness. This is best achieved when the cutting forces on the inner and outer inserts are balanced.”
