YZB121 YZB221 YZB231 TurningMillingDrillingTechnicalInformationIndex PCBN & PCD inserts General turning Ideal machining conditionsNormal machining conditions CNGN L I.C S12 0412.912.74.76A Turning CBN inserts Unfavourable machining conditions CN** negative insert BL (CBN) BH (CBN) P K N H ISO r ap f B CNGN120404 0.4 0.5-2.0 0.3-0.5 ż CNGN120408 0.8 0.5-2.0 0.3-0.5 ż ż ż CNGN120412 1.2 0.5-2.0 0.3-0.5 ż ż ż CNGN120416 1.6 0.5-2.0 0.3-0.5 ż ż ż Medium Cut Ɣ Ex stock ż On demand BL CBN with a low CBN content BH CBN with a high CBN content Tool holderCCLNR/L C Kr: 95° A258 D E System code A40 Grade selection A146 Technical info A447 Cutting data A324 A 159