Ruko main catalogue precision tools Page 72
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Table of cutting speeds for sheet drills Material: High carbon struc. steel High carbon struc. steel Alloyed steel Cast iron Cast iron up to over up to over over 700 N/mm² 700 N/mm² 1000 N/mm² 250 N/mm² 250 N/mm² Sheet thickness: Vc = m/min 03 Cooling lubricant: Size 70 Ø mm CuZnalloy CuZnalloy Alalloy brittle tough up to 11% Si Thermoplastics Duroplastics up to 4.0 up to 4.0 up to 4.0 up to 4.0 up to 4.0 up to 4.0 up to 4.0 up to 4.0 up to 4.0 up to 4.0 30 20 20 15 10 60 35 30 20 15 Cutting spray Cutting spray Cutting spray Cutting spray Air Air Air Cutting spray Water Air n = r.p.m. n = r.p.m. n = r.p.m. n = r.p.m. n = r.p.m. n = r.p.m. n = r.p.m. n = r.p.m. n = r.p.m. n = r.p.m. 1062-227 6369-1365 3715-796 3185-682 2123-455 1592-341 1911-478 1274-318 955-239 No. 1 3.0-14.0 3185-682 2123-455 2123-455 1592-341 No. 2 4.0-20.0 1911-478 1274-318 1274-318 955-239 637-159 3822- 955 2229-557 No. 3 16.0-30.5 597-313 398-209 398-209 299-157 199-104 1194- 627 697-365 597-313 398-209 299-157 No. 4 24.0-40.0 398-239 265-159 265-159 199-119 133- 80 796- 478 464-279 398-239 265-159 199-119 No. 5 36.0-50.0 265-191 177-127 177-127 133- 96 88- 64 531- 382 310-223 265-191 177-127 133- 96 No. 6 40.0-61.0 239-157 159-104 159-104 119- 78 80- 52 478- 313 279-183 239-157 159-104 119- 78 No. 7 5.0-25.4 1911-376 1274-251 1274-251 955-188 637-125 3822- 752 2229-439 1911-376 1274-251 955-188 No. 8 5.0-31.0 1911-308 1274-205 1274-205 955-154 637-103 3822- 616 2229-360 1911-308 1274-205 955-154 No. 9 5.0-22.5 1911-425 1274-283 1274-283 955-212 637-142 3822- 849 2229-495 1911-425 1274-283 955-212
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