15° D1 9 RDMT 12 INSD D1 S [mm] [mm] [mm] 12T3 12.0 3.90 3.97 INSD S Suitability and starting values for cutting speed (vc), feed (f) and depth of cut (ap). Refer to our Machining Calculator app for further calculations. Product RE P M K N S Hvcfapvcfapvcfapvcfapvcfapvcfap [mm] [m/min] [mm/tooth] [mm] [m/min] [mm/tooth] [mm] [m/min] [mm/tooth] [mm] [m/min] [mm/tooth] [mm] [m/min] [mm/tooth] [mm] [m/min] [mm/tooth] [mm] 0,15 16° HFC S Positive design for finish machining. 20° RDMT 12T3MOT M8325 – 250 0.20 1.5 120 0.18 1.5 – – – – – – – – – – – – M8345 – 225 0.20 1.5 135 0.18 1.5 – – – – – – – – – – – – 559