Screw Clamp ¢ STLN (Without Offset) (External / Up Facing) Side Rake Angle: -6˚ F1 B Angle of Inclination: -7˚ S 95° 95° L2 L1 90° h H1 l Right-hand shown l Toolholder Dimensions Standard Corner-R(rε) Spare Parts E Dimension (mm) Clamp Screw Wrench Description Std. Applicable Inserts H1=h B L1 L2 F1 S STLNR 1010K-09FF N 10 10 120 10 1212F-09FF N 12 12 85 15 12 0 0.2 SB-2570TR LTW-8SS TNGU0903.. 1212K-09FF N 120 Small Tools 1616K-09FF N 16 16 16 l Applicable Inserts Applications Finishing Low Feed Ref. to Page B48 B48 Insert FR-F (E/F)R-U Toolholder Description STLNR...-09FF TNGU0903.. TNGU0903.. Double-sided design allows all edges to be used. Compared to the positive type, ¢ Case Studies the double-sided design offers less cost per insert and more stability. SUS303 l Comparison of surface roughness (Sharp edge) · Spool (μm) 2.0 · Vc=66m/min Negative Insert · ap=1.25mm φ6 Roughness Ra DNGU080302MFR-U (PR1025) · f=0.025mm/rev 1.5 · Wet φ8 · Vc=130m/min 48 1.0 · ap=0.25mm · f=0.025mm/rev Required Surface Roughness 0.8μmRa Surface 0.5 Positive Insert · Wet DCGT11T302MFR-U (PR1025) DNGU080302MF-SK (PR1025) 60,000pcs/insert (4 edges) 0 10 20 30 40 50 Cutting Time (min) Competitor D (DCGT type) 20,000 pcs/insert (2 edges) Workpiece Material : S45C Vc=100m/min, ap=1.5mm, f=0.03mm/rev, Wet Competitor D (DCGT type) machined 10,000 pcs/edge. PR1025 machined 15,000 pcs./edge (Internal evaluation) resulting in 3 times longer tool life per insert. (Evaluation by the user) (Evaluation by the user) Recommended Cutting Conditions Workpiece Insert Grades Material PR1005 PR1025 PR1225 PR1425 Free-cutting - - - steel Vc=100m/min (60 ~ 150) Carbon steel / Alloy steel Vc=100m/min Vc=100m/min Vc=100m/min Vc=120m/min (60 ~ 150) (60 ~ 150) (60 ~ 150) (60 ~ 200) : Continuous to Light interruption / 1st Recommendation : Continuous to Light interruption / 2nd Recommendation Stainless Steel - Vc=100m/min Vc=80m/min Vc=100m/min : Continuous / 1st Recommendation (60 ~ 150) (50 ~ 150) (80 ~ 150) : Continuous / 2nd Recommendation N : Std. Item E39