
(1) P (2) Px1.25 0.2-0.3 0 USER GUIDE (1) New drilling head Indication of Drill Head Wear (2) Worn-out drilling head Wear Limit Power Restriction (1) P (2) (1) Px1.25 0.2-0.3 P (2) (1) (1) Px1.25 P (2) Px1.25 0.2-0.3 0.2-0.3 P (2) Px1.25 Ø > D nominal + 0.15 mm 0.2-0.3 D nominal Ra 0 0 0 Ø < D nominal - 0.03 mm 0 INDEXABLE DRILLS (1) New drilling head (2) Worn-out drilling head (1) New drilling head (1) New drilling head (1) New drilling head (2) Worn-out drilling head (1) New drilling head (2) Worn-out drilling head (2) Worn-out drilling head (2) Worn-out drilling head Diameter Change Surface Finish Declines Ø > D nominal + 0.15 mm Ø > D nominal + 0.15 mm Ø > D nominal + 0.15 mm Ø > D nominal + 0.15 mm D nominal Ra D nominal D nominal Ra Ra D nominal Ø < D nominal - 0.03 mm Ra Ø < D nominal - 0.03 mm Ø < D nominal - 0.03 mm Ø < D nominal - 0.03 mm Vibration Noise Drastically Increases Drilling Limitations ✘ ✘ ✘ ✘ ✘ ✘ ✘ ✘ ✘ 493 493