YZB121 YZB221 YZB231 TurningMillingDrillingTechnicalInformationIndex PCBN & PCD inserts General turning Ideal machining conditionsNormal machining conditions WNGN L I.C S08 048.6912.74.76A Turning CBN inserts Unfavourable machining conditions WN** negative insert BL (CBN) BH (CBN) P K N H ISO r ap f B WNGN080408 0.8 0.5-2.0 0.3-0.5 ż ż ż WNGN080412 1.2 0.5-2.0 0.3-0.5 ż ż ż Ɣ Ex stock ż On demand BL CBN with a low CBN content BH CBN with a high CBN content C D E System code A40 Grade selection A146 Technical info A447 Cutting data A324 A 161