SYMBOL DESCRIPTIONS CARBIDE Tool Material Tolerances Ultra Micro Grain CarbideUltra micro grain carbide is used as the substratematerial.Outside Diameter ToleranceIndicates diameter tolerance of end mill. Angle, Coolant hole, Sharp corner edge and Gash land R Tolerance Indicates the radial tolerance of a ball nose end mill. Helix Angle Indicates the helix angle of the end mill. R Tolerance Indicates the radial tolerance of an end mill with a corner radius. End Cutting Edge with Coolant Hole Tolerance of Point Angle Indicates the tolerance of the point angle. Peripheral Cutting Edge with Coolant Hole Shank Diameter Tolerance Indicates the shank diameter tolerance of end mill. Sharp Corner Edge Indicates the end mill has a sharp corner edge. Gash Land Indicates the end mill cutting edge has a gash land. CORRECTION FACTOR BY OVERHANG LENGTH (SHOULDER MILLING) Reduce the cutting parameters by the coefficient values shown according to the length of overhang. For long edge and oversize types heads refer to their specific recommended conditions. (inch) Carbon Steel, Alloy Steel, Mild Steel, Pre-hardened Steel, Carbon Steel, Austenitic Stainless Steel, Work Copper, Copper AlloyMaterial Alloy Steel, Alloy Tool Steel Ferritic and Martensitic Stainless Steel,Titanium Alloy L/D Revolutionn(min-1)Feed per Toothfz(IPT)Width of CutaeRevolutionn(min-1)Feed per Toothfz(IPT)Width of CutaeRevolutionn(min-1)Feed per Toothfz(IPT)Width of CutaeJ 2 100% 100% 100% 100% 100% 100% 100% 100% 100% 3 100% 100% 100% 100% 100% 100% 100% 100% 100% 4 80% 90% 70% 80% 90% 70% 80% 90% 70% 5 60% 80% 40% 60% 80% 40% 60% 80% 40% 6 50% 70% 30% 50% 70% 30% 50% 70% 30% 7 40% 70% 20% 40% 70% 20% 30% 60% 20% 8 40% 60% 10% 40% 60% 10% 30% 50% 10% 9 30% 60% 10% 30% 60% 10% 20% 50% 10% Precipitation Hardening Stainless Steel, Heat Resistant Alloy Work Cobalt Chromium Alloy Material Inconel718 L/D Revolutionn(min-1)Feed per Toothfz(IPT)Width of CutaeRevolutionn(min-1)Feed per Toothfz(IPT)Width of Cutae 2 100% 100% 100% 100% 100% 100% 3 100% 100% 100% 100% 100% 100% 4 80% 90% 70% 80% 90% 70% 5 60% 80% 40% 60% 80% 40% 6 50% 70% 30% 50% 70% 30% 7 30% 60% 20% 30% 60% 20% 8 30% 50% 10% 30% 50% 10% 9 20% 50% 10% 20% 50% 10% J003 EXCHANGEABLE HEAD END MILLS