ISO 1641-3:2011(E) Table2 Dimensions of ball-nosed end mills and flat-ended cylindrical end mills with7/24tapershanksformanualtoolchangers Length, l1 Length, l2 Range of Recommended 7/24 taper diameters, d, diameters, d Long Long Normal Normal no. js14 series series series series 23,6<d≤30 24 and 25 28 150 195 45 90 30 158 211 30 <d,≤37,5 32 36 188 241 53 106 40 208 261 45 198 260 40 37,5 <d, ≤ 47,5 40 45 218 280 63 125 45 240 302 50 210 285 40 47,5<d≤60 50 56 230 305 75 150 45 252 327 50 245 335 45 60 <d,≤75 63 71 90 180 267 357 50 75<d,≤95 80 283 389 106 212 一 3.2.3 Slot drill The dimensions of slot drill shall be in accordance with the dimensions shown in Figure 2 and Table 3 12 Key 7/24 taper shank for manual tool changer in accordance with ISO 297 1 Figure 2—Slot drill with 7/24 taper shanks for manual tool changers 3 ISO 2011 All rights reserved ISO1641-3:2011(E) Table3 Dimensionsof slotdrill with7/24taper shanksformanual toolchangers Length, l1 Length, l2 Range of Recommended 7/24 taper diameters, d, diameters, d, Short Normal Short Normal no. e8 series series series series 23,6 <d≤ 30 24 and 25 28 131 150 26 45 30 137 158 30 <d ≤37,5 32 36 167 188 32 53 40 187 208 45 173 198 40 37,5<d,≤47,5 40 45 193 218 38 c9 45 215 240 50 180 210 40 47,5<d,≤60 50 56 200 230 45 75 45 222 252 50 208 245 45 60 <d,≤75 89 71 53 06 230 267 50 75<d≤95 80 240 283 63 106 一 3.3 7/24tapershanksforautomatictoolchangers 3.3.1 General The values, l, and l2, shall be chosen such that the difference in length (l, -l2) remains constant whatever the series (normal or long), according to Table 4. Table 4- Length difference (l, - l2) 7/24taperno. 40 50 (1 12) 118 156 4 @ ISO 2011 -All rights reserved ISO 1641-3:2011(E) 3.3.2 Flat-ended end mills and ball-nosed cylindrical end mills The dimensions of flat-ended end mills and ball-nosed cylindrical end mills shall be in accordance with the dimensions shown in Figure 3 and Table 5. Key 7/24 taper shank for automatic tool changer in accordance with ISO 7388-1 and ISo 7388-2 1 Figure 3Flat-ended end mills and ball-nosed cylindrical end mills with7/24tapershanksforautomatictoolchangers Table 5Dimensions of flat-ended end mills and ball-nosed cylindrical end mills with7/24tapershanksforautomatic toolchangers Length, l2 Range of Length, l Recommended 7/24 taper diameters, d, diameters, d, Normal Long Normal Long no. js14 series series series series 30 <d, ≤ 37,5 32 36 171 224 53 106 40 181 243 40 37,5<d, ≤ 47,5 40 45 63 125 219 281 50 193 268 40 47,5<d,≤60 50 56 75 150 231 306 60 <d,≤75 63 71 246 90 180 50 75 <d,≤85 80 262 368 106 212 一 @ Iso 2011 All rights reserved 5 ISO1641-3:2011(E) 4.2 7/24tapershanksforautomatictoolchangers Flat-ended end mills and ball-nosed cylindrical end mills with 7/24 taper shank for automatic tool changers in accordance with this part of isO 1641 shall be designated by: a) "Flat-ended end mills” or “ball-nosed cylindrical end mills"; b) the reference to this part of ISO 1641, i.e.ISO 1641-3; c) a hyphen; (p the recommended diameter, dg; ( a hyphen; the 7/24 taper number; (6 a hyphen; h) letter"a"for“automatic tool changers". EXAMPLE1 with recommended diameter d,=32 and 7/24 taper no.40 is designated as follows: Flat-ended end mills ISo 1641-3 32 40 a EXAMPLE2 ISO 1641-3 with recommended diameter d, =32 and 7/24 taper no. 40 is designated as follows: Ball-nosed cylindrical end mills ISo 1641-3 32 40 - a ISO 2011 All rights reserved 7 ISO1641-3:2011(E) ICS 2 25.100.20 Price based on 7 pages @ ISO 2011 - All rights reserved ISO1641-3:2011(E) ICS 2 25.100.20 Price based on 7 pages @ ISO 2011 - All rights reserved