TurningMillingDrillingTechnicalInformationIndex YZB121 YZB221 YZB231 General turning PCBN & PCD inserts A Ideal machining conditions RNGN L I.C SNormal machining conditions12 0412.712.74.76 Turning CBN inserts Unfavourable machining conditions 12 07 12.7 12.7 7.94 RN** negative insert BL (CBN) BH (CBN) P K N H B ISO ap f RNGN120400 0.5-2.0 0.3-0.5 ż ż RNGN120700 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 C Tool holderCRDNN A264 D E System code A40 Grade selection A146 Technical info A447 Cutting data A324 A 162