Ø DC mm Dmin mm Dmax mm αR ° Dmin mm Dmax mm αR ° Dmin mm Dmax mm αR ° Dmin mm Dmax mm αR ° Dmin mm Dmax mm αR ° Dmin mm Dmax mm αR ° 10 12 15 2,5 12 16 19 2,1 16 24 27 1,5 21 24 2,4 20 32 35 1,2 27 32 1,9 26 30 1,3 25 42 45 1,0 37 42 1,5 37 40 1,8 31 38 2,2 32 56 59 0,7 51 56 1,2 50 54 1,5 46 52 1,7 40 64 70 1,1 62 68 1,4 42 68 74 1,1 50 84 90 0,9 81 88 1,1 75 84 1,5 52 88 94 0,9 86 92 1,0 63 107 114 0,9 101 110 1,1 66 113 120 0,8 80 142 148 0,7 135 144 0,9 128 140 1,1 100 181 188 0,5 175 184 0,7 168 180 0,9 125 218 230 0,7 DC p max a α DC Dmin DC Dmax DC 05 08 10 12 16 20 ap max 4 ap max 8 Ø mm ap max. mm ap max. mm mm 5 1,0 2,0 0,7 8 1,5 3,5 1,1 10 2,5 4,5 1,4 12 3,0 5,5 1,7 16 4,0 7,5 2,3 20 4,0 9,5 2,9 05 08 10 12 16 20 Ø DC mm α ° α ° α ° α ° α ° α ° 10 3,4 12 16,0 16 8,0 5,0 20 5,5 20,0 1,3 25 4,0 13,0 2,0 6,0 32 3,0 8,0 3,0 4,0 40 3,3 2,8 42 3,1 50 2,4 2,6 4,0 52 2,2 2,3 63 1,9 2,8 66 1,6 80 1,3 2,0 3,2 100 1,0 1,5 2,3 125 1,7 05 08 10 12 16 20 Ø DC mm Xmax. mm Xmax. mm Xmax. mm Xmax. mm Xmax. mm Xmax. mm 10 0,5 12 1,3 16 1,3 0,5 20 1,3 2,7 0,2 25 1,3 2,7 0,4 1,0 32 1,3 2,7 0,8 1,1 40 1,5 1,2 42 1,5 1,5 50 1,5 1,5 2,0 52 1,5 1,5 2,0 63 1,5 2,0 66 1,5 2,0 80 1,5 2,0 3,0 100 1,5 2,0 3,0 125 3,0 Recommended cutting depth Angled ramping Axial ramping Average depth for the 4/8 index use of the insert Dmin. = smallest drilling diameter depending on the tool diameter Dmax. = Maximum hole diameter Depending on the tool diameter Technical data Helical plunging 251/251 RS system maximum possible hole diameter = 2 x DC – 1 mm 4-position 8-face ap max theoretical → Find detailed information on cutting speeds for each cutting material here. 193 Milling tools with indexable inserts Technical Information
Tooling a Sustainable Future
eCatalog 2026 - EN-INT
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