RNGN CBN Inserts Application Case IT500- for rough turning roll excircle For example: Workpiece: Roll Material: High nickel chromium chilled cast iron Hardness: HSD80 Insert: RNGN201000 Cutting parameter: Vc=50m/min ap=12mm f = 2mm/r Tool life: 2 hours/edge For comparison only: Other CBN inserts: 1 hour/edge Vc=40m/min RNGN CBN Inserts Specification