INDEXABLE MILLING RECOMMENDED CUTTING CONDITIONS y Wet Cutting Depth of Cut / Feed per Tooth ( inch) Cutter Diameter DC Cutting Width Cutting ø.625-ø.750(ø16 mm-ø18 mm) ø.875-ø1.000(ø20 mm-ø25 mm) ø1.125-ø2.500(ø28 mm-ø63 mm) Work Material Properties ae Conditions Depth of Cut Feed per Tooth Depth of Cut Feed per Tooth Depth of Cut Feed per Tooth ap fz (IPT) ap fz (IPT) ap fz (IPT) P < .25DC <.236 .004 ─ .006 <.315 .004 ─ .008 <.315 .004 ─ .010 Hardness .25 ─ .5DC <.197 .004 ─ .006 <.315 .004 ─ .006 <.315 .004 ─ .008 Mild Steel < 180HB .5 ─ .75DC <.157 .003 ─ .005 <.236 .003 ─ .005 <.236 .004 ─ .006 DC(Slot) <.079 .002 ─ .004 <.157 .002 ─ .004 <.157 .003 ─ .005 < .25DC <.236 .004 ─ .006 <.315 .004 ─ .008 <.315 .004 ─ .010 Carbon Steel .25 ─ .5DC <.197 .003 ─ .005 <.315 .004 ─ .006 <.315 .004 ─ .008 Hardness Alloy Steel 180 ─ 280HB .5 ─ .75DC <.157 .003 ─ .005 <.236 .003 ─ .005 <.236 .004 ─ .006 Alloy Tool Steel DC(Slot) <.079 .002 ─ .004 <.157 .002 ─ .004 <.157 .003 ─ .005 Hardness < .25DC <.236 .004 ─ .006 <.315 .004 ─ .006 <.315 .004 ─ .008 Carbon Steel .25 ─ .5DC <.197 .003 ─ .005 <.315 .003 ─ .005 <.315 .004 ─ .006 280 ─ 350HB Alloy Steel < 350HB .5 ─ .75DC <.157 .003 ─ .005 <.236 .002 ─ .004 <.236 .003 ─ .005 Alloy Tool Steel (Annealing) DC(Slot) <.079 .002 ─ .004 <.157 .002 ─ .004 <.157 .002 ─ .004 < .25DC <.236 .004 ─ .006 <.315 .004 ─ .006 <.315 .004 ─ .008 Hardness .25 ─ .5DC <.197 .003 ─ .005 <.315 .003 ─ .005 <.315 .004 ─ .006 Pre-hardened Steel 35 ─ 45HRC .5 ─ .75DC <.157 .003 ─ .005 <.236 .002 ─ .004 <.236 .003 ─ .005 DC(Slot) <.079 .002 ─ .004 <.157 .002 ─ .004 <.157 .002 ─ .004 M <.236 .004 ─ .006 <.315 .004 ─ .008 <.315 .004 ─ .008 < .25DC <.236 .003 ─ .005 <.315 .003 ─ .006 <.315 .003 ─ .006 <.197 .003 ─ .005 <.315 .003 ─ .006 <.315 .003 ─ .006 .25 ─ .5DC Austenitic Stainless <.197 .002 ─ .004 <.315 .003 ─ .005 <.315 .003 ─ .005 ─ Steel <.157 .002 ─ .004 <.236 .003 ─ .005 <.236 .003 ─ .005 .5 ─ .75DC <.157 .002 ─ .003 <.236 .002 ─ .004 <.236 .002 ─ .004 <.079 .002 ─ .004 <.157 .002 ─ .004 <.157 .002 ─ .004 DC(Slot) <.079 .002 ─ .003 <.157 .002 ─ .003 <.157 .002 ─ .003 <.236 .004 ─ .006 <.315 .004 ─ .008 <.315 .004 ─ .008 < .25DC <.236 .003 ─ .005 <.315 .003 ─ .006 <.315 .003 ─ .006 <.197 .003 ─ .005 <.315 .003 ─ .006 <.315 .003 ─ .005 .25 ─ .5DC Hardness <.197 .002 ─ .004 <.315 .003 ─ .005 <.315 .003 ─ .005 Duplex Stainless Steel < 280HB <.157 .002 ─ .004 <.236 .003 ─ .005 <.236 .003 ─ .005 .5 ─ .75DC <.157 .002 ─ .003 <.236 .002 ─ .004 <.236 .002 ─ .004 <.079 .002 ─ .004 <.157 .002 ─ .004 <.157 .002 ─ .004 DC(Slot) <.079 .002 ─ .003 <.157 .002 ─ .003 <.157 .002 ─ .003 <.236 .004 ─ .006 <.315 .004 ─ .008 <.315 .004 ─ .008 < .25DC <.236 .003 ─ .005 <.315 .003 ─ .006 <.315 .003 ─ .006 <.197 .003 ─ .005 <.315 .003 ─ .006 <.315 .003 ─ .006 .25 ─ .5DC Ferritic and Martensitic <.197 .002 ─ .004 <.315 .003 ─ .005 <.315 .003 ─ .005 ─ Stainless Steel <.157 .002 ─ .004 <.236 .003 ─ .005 <.236 .003 ─ .005 .5 ─ .75DC <.157 .002 ─ .003 <.236 .002 ─ .004 <.236 .002 ─ .004 <.079 .002 ─ .004 <.157 .002 ─ .004 <.157 .002 ─ .004 DC(Slot) <.079 .002 ─ .003 <.157 .002 ─ .003 <.157 .002 ─ .003 <.236 .004 ─ .006 <.315 .004 ─ .006 <.315 .004 ─ .006 < .25DC <.236 .003 ─ .005 <.315 .003 ─ .005 <.315 .003 ─ .005 <.197 .003 ─ .005 <.315 .003 ─ .005 <.315 .003 ─ .005 .25 ─ .5DC Precipitation Hardening Hardness <.197 .002 ─ .004 <.315 .003 ─ .005 <.315 .003 ─ .005 L Stainless Steel < 450HB <.157 .002 ─ .004 <.236 .002 ─ .004 <.236 .002 ─ .004 .5 ─ .75DC <.157 .002 ─ .003 <.236 .002 ─ .003 <.236 .002 ─ .003 <.079 .002 ─ .004 <.157 .002 ─ .004 <.157 .002 ─ .004 INDEXABLE MILLING DC(Slot) <.079 .002 ─ .003 <.157 .002 ─ .003 <.157 .002 ─ .003 Note 1) These cutting conditions should be referenced for standard shank types (last letter in designation is S) and arbor shank types. If there is chatter, insert chipping, etc. during machining, alter conditions accordingly. Note 2) Chattering vibration is more likely under the following circumstances. Use a cut and feed per tooth that are at minimum recommended conditions or below. • When tool overhang is long (using a long shank, screw-in type, etc.) • Rigidity of machine, work material or attachment of work material is low • Corner radius during pocket milling Note 3) A type with fewer teeth is recommended when the depth of cut in the radius direction (ae) is .5 DC or more. Note 4) Wet cutting is recommended, when focusing on the surface finish. (Tool life is shorter than for dry cutting.) Note 5) When using under higher than recommended cutting conditions, or for long periods of time, the clamp screw may become fatigued and break during machining. Please change out the clamp screw periodically. L136