- Chipbreaker Guide 1 corner inser t Internal grooving GN 1st choice for internal grooving 0.30 Feed: f (mm/rev) Low cutting force and good chip 0.25 control for internal grooving 0.20 0.15 Low cutting force and good chip 0.10 CW = 3 - 5 mm 0.05 External Internal 3 4 5 Groove width : CW (mm) F117 page Internal GE 1st choice for external grooving 0.30 Feed: f (mm/rev) and parting 0.25 Face Excellent chip control 0.20 CW = 2 - 5 mm 0.15 External 0.10 Parting Internal 0.05 Face Parting Others 2 3 4 5 F115 page Groove width : CW (mm) GF 1st choice for face grooving 0.30 Feed: f (mm/rev) Low cutting force and good chip 0.25 0.20 control for face grooving 0.15 CW = 3 - 5 mm 0.10 0.05 Internal 3 4 5 Groove width : CW (mm) F116 page Grooving and turning GT 1st choice for traversing Depth of cut: ap (mm) GT50 Low cutting force and good chip 2.0 GT40 control for traversing GT30 CW = 3 - 5 mm 1.0 0.05 0.10 0.15 0.20 0.25 0.30 F115 page Feed: f (mm/rev) Profiling GR Full radius type Depth of cut: ap (mm) Low cutting force and good 2.0 GR50 chip control for profiling GR40 GR30 CW = 3 - 5 mm 1.0 0.05 0.10 0.15 0.20 0.25 0.30 Feed: f (mm/rev) F116 page F118 www.tungaloy.com