USER GUIDE REAMERS H-REAM Cutting Conditions The cutting conditions in the table below should be used to start a new application. Optimal conditions for a specific application should be evaluated by examining the results and changing the machining conditions accordingly. Lead A=15°/3° L3 (reaming allowance = 0.1-0.3) Lead B=30°/3° L1.3 (reaming allowance = 0.1-0.3) Cutting Speed Vc [m/min] Cutting Speed Vc [m/min] Feed [mm/rev] Feed [mm/rev] Material No. Material Rake [ ° ] Rake [ ° ] Carbide Carbide Carbide Carbide Cermet Cermet Coated Coated CBN CBN PCD PCD Non-alloy steel 1-5 and cast steel, 0.1-0.4 6 40-60 60-80 110-160 0.1-0.3 6 60-80 80-120 110-160 free cutting steel Low alloy and cast 6-9 steel (less than 5% 0.1-0.4 6 20-40 40-60 110-160 0.1-0.3 6 60-80 80-120 110-160 of alloying elements) High alloyed 10-11 steel, cast steel 0.1-0.4 6 20-40 20-60 20-60 0.1-0.3 6 40-60 40-80 40-80 and tool steel Stainless steel 12-13 0.1-0.3 12 20-40 40-60 40-60 0.1-0.2 12 40-60 60-80 60-80 and cast steel 15-16 Grey cast iron (GG) 0.1-0.3 0/6 40-60 60-100 0.1-0.3 0/6 60-80 80-120 Nodular cast Please Please 17-18 0.1-0.3 0/6 40-60 60-100 0.1-0.3 0/6 60-80 80-120 iron (GGG) ask ask 19-20 Malleable cast iron 0.1-0.3 0/6 40-60 60-100 0.1-0.3 0/6 60-80 80-120 Aluminum 21-22 0.1-0.3 12 160-200 wrought alloy Aluminum Please Please 23-25 0.1-0.3 12 160-200 -cast, alloyed ask ask 26-28 Copper alloys 0.1-0.2 0 80-100 29-30 Non-metallic 0.1-0.3 0 10-70 Lead C=75°/3° L0.55 (reaming Lead D=30°/3° L0.6 (reaming allowance = 0.1-0.2) allowance = 0.2-0.4) Cutting Speed Vc [m/min] Cutting Speed Vc [m/min] Feed [mm/rev] Feed [mm/rev] Material Material No. Rake [ ° ] Rake [ ° ] Carbide Carbide Carbide Carbide Cermet Cermet Coated Coated CBN CBN PCD PCD Non-alloy steel 1-5 and cast steel, 0.05-0.2 6 60-80 80-120 110-160 free cutting steel Low alloy and cast 6-9 steel (less than 5% 0.05-0.2 6 60-80 80-120 110-160 of alloying elements) High alloyed steel, 10-11 cast steel and tool 0.05-0.2 6 40-60 40-80 40-80 steel and tool steel Stainless steel 12-13 0.05-0.2 12 40-60 60-80 60-80 and cast steel 15-16 Grey cast iron (GG) 0.05-0.2 0/6 60-80 80-120 Nodular cast Please Please 17-18 0.05-0.2 0/6 60-80 80-120 iron (GGG) ask ask 19-20 Malleable cast iron 0.05-0.2 0/6 60-80 80-120 Aluminum 21-22 0.05-0.2 12 110-200 0.15-0.3 12 150-250 wrought alloy Aluminum Please Please 23-25 0.05-0.2 12 180-200 0.15-0.3 12 150-250 -cast, alloyed ask ask 26-28 Copper alloys 0.05-0.2 0 80-100 29-30 Non-metallic 342 ISCAR