Technical Specifications for 6×49SWS Steel Wire Rope
The 6x49SWS represents the ultimate achievement in wire rope engineering for combating metal fatigue. It is a highly specialized rope designed exclusively for the most severe dynamic applications where longevity is measured in millions of bending cycles.
The construction features an exceptionally high number of incredibly fine wires meticulously arranged in each strand. This complex design allows internal and external stresses to be distributed more evenly as the rope passes over sheaves, dramatically reducing fatigue and extending its operational life far beyond that of any other wire rope classification.
Due to its focus on flexibility, this rope has very low resistance to abrasion and mechanical damage and must be used in clean, well-maintained systems. It is the ultimate problem-solver for the most advanced crane technology.
| NOMINAL DIAMETER | APPROX. WEIGHT | NOMINAL TENSILE STRENGTH OF ROPE(MPA) | |||||||||||
| 1570 | 1670 | 1770 | 1870 | 1960 | |||||||||
| MINIMUM BREAKING LOAD OF ROPE | |||||||||||||
| D | NF | SF | IWR/IWS | FC | IWR/IWS | FC | IWR/IWS | FC | IWR/IWS | FC | IWR/IWS | FC | IWR/IWS |
| MM | KG/100M | KN | |||||||||||
| 6 | 13.7 | 13.4 | 15 | 18.6 | 20.1 | 19.8 | 21.4 | 21 | 22.6 | 22.2 | 23.9 | 23.2 | 25.1 |
| 8 | 24.3 | 23.7 | 26.8 | 33.2 | 35.8 | 35.3 | 38 | 37.4 | 40.3 | 39.5 | 42.6 | 41.4 | 44.6 |
| 9 | 30.8 | 30.1 | 33.9 | 42 | 45.3 | 44.6 | 48.2 | 47.3 | 51 | 50 | 53.9 | 52.3 | 56.5 |
| 10 | 38 | 37.1 | 41.8 | 51.8 | 55.9 | 55.1 | 59.5 | 58.4 | 63 | 61.7 | 66.6 | 64.6 | 69.7 |
| 11 | 46 | 44.9 | 50.6 | 62.7 | 67.6 | 66.7 | 71.9 | 70.7 | 76.2 | 74.7 | 80.6 | 78.2 | 84.4 |
| 12 | 54.7 | 53.4 | 60.2 | 74.6 | 80.5 | 79.4 | 85.6 | 84.1 | 90.7 | 88.9 | 95.5 | 93.1 | 100 |
| 13 | 64.2 | 62.7 | 70.6 | 87.6 | 94.5 | 93.1 | 100 | 98.7 | 106 | 104 | 113 | 109 | 118 |
| 14 | 74.5 | 72.7 | 81.9 | 102 | 110 | 108 | 117 | 114 | 124 | 121 | 130 | 126 | 136 |
| 16 | 97.3 | 95 | 107 | 133 | 143 | 141 | 152 | 150 | 161 | 158 | 170 | 165 | 178 |
| 18 | 123 | 120 | 135 | 168 | 181 | 179 | 193 | 189 | 204 | 200 | 216 | 209 | 226 |
| 20 | 152 | 148 | 167 | 207 | 224 | 220 | 238 | 234 | 252 | 247 | 266 | 258 | 279 |
| 22 | 184 | 180 | 202 | 251 | 271 | 267 | 288 | 283 | 305 | 299 | 322 | 313 | 337 |
| 24 | 219 | 214 | 241 | 298 | 322 | 317 | 342 | 336 | 363 | 355 | 383 | 372 | 402 |
| 26 | 257 | 251 | 283 | 350 | 378 | 373 | 402 | 395 | 426 | 417 | 450 | 437 | 471 |
| 28 | 298 | 291 | 328 | 406 | 438 | 432 | 466 | 458 | 494 | 484 | 522 | 507 | 547 |
| 30 | 342 | 334 | 376 | 466 | 503 | 496 | 535 | 526 | 567 | 555 | 599 | 582 | 627 |
| 32 | 389 | 380 | 428 | 531 | 572 | 564 | 609 | 598 | 645 | 632 | 682 | 662 | 714 |
| 34 | 439 | 429 | 483 | 599 | 646 | 637 | 687 | 675 | 728 | 713 | 770 | 747 | 806 |
| 36 | 492 | 481 | 542 | 671 | 724 | 714 | 770 | 757 | 817 | 800 | 863 | 838 | 904 |
| 38 | 549 | 536 | 604 | 748 | 807 | 796 | 858 | 843 | 910 | 891 | 961 | 933 | 1007 |
| 40 | 608 | 594 | 669 | 829 | 894 | 882 | 951 | 935 | 1010 | 987 | 1070 | 1034 | 1116 |
| 42 | 670 | 654 | 737 | 914 | 986 | 972 | 1050 | 1030 | 1110 | 1090 | 1170 | 1140 | 1230 |
| 44 | 736 | 718 | 809 | 1000 | 1080 | 1070 | 1150 | 1130 | 1220 | 1190 | 1290 | 1252 | 1350 |
| 46 | 804 | 785 | 884 | 1100 | 1180 | 1170 | 1260 | 1240 | 1330 | 1310 | 1410 | 1368 | 1476 |
| 48 | 876 | 855 | 963 | 1190 | 1290 | 1270 | 1370 | 1350 | 1450 | 1420 | 1530 | 1490 | 1607 |
| 50 | 950 | 928 | 1050 | 1300 | 1400 | 1380 | 1490 | 1460 | 1580 | 1540 | 1660 | 1617 | 1744 |
| 52 | 1030 | 1000 | 1130 | 1400 | 1510 | 1490 | 1610 | 1580 | 1700 | 1670 | 1800 | 1748 | 1886 |
| 54 | 1110 | 1080 | 1220 | 1510 | 1630 | 1610 | 1730 | 1700 | 1840 | 1800 | 1940 | 1886 | 2034 |
| 56 | 1190 | 1160 | 1310 | 1620 | 1750 | 1730 | 1860 | 1830 | 1980 | 1940 | 2090 | 2028 | 2188 |
| 58 | 1280 | 1250 | 1410 | 1740 | 1880 | 1850 | 2000 | 1960 | 2120 | 2080 | 2240 | 2175 | 2347 |
| 60 | 1370 | 1340 | 1500 | 1870 | 2010 | 1980 | 2140 | 2100 | 2270 | 2220 | 2400 | 2328 | 2511 |
6x49SWS+FC Steel Wire Rope
This configuration offers a level of flexibility and pliability that is truly unmatched, making it suitable for very specific, often custom-designed, light-load applications where the rope must navigate an extremely intricate path with multiple small sheaves.
6x49SWS+IWR Steel Wire Rope
This is the premier and most common configuration for the 6x49SWS class. It combines the rope’s unparalleled fatigue resistance with the indispensable strength, stability, and crush resistance of a steel core. This makes it the essential choice for the main hoist lines on modern luffing jib tower cranes, large-scale mobile cranes, and other state-of-the-art lifting systems where performance, safety, and minimizing rope changes are critical to project success.
