Helical Mills M390 SD1204... P Max depth of cut: 17mm M K Lead angle: 90° Indexes per insert: 4 Diameter: 50–80mm S H Pages: K4–K9 Maximum cutting depth (Ap1) and contact width (ae) ratios based on application type Slot Milling Contouring Profiling ae = 1 x D1 ae = 0,25–0,4 x D1 ae = <0,25 x D1 Ap1 max = 0,6 x D1 Ap1 max = 1 x D1 Ap1 max = Ap1 max ae = >0,4 x D1 Ap1 max = 0,6 x D1 *Not recommended in ISO “H” materials. *Not recommended in ISO “H” materials. widia.com K3