Terex RT700 - Page 284

TABLE 25 MINIMUM BREAKING FORCE OF WIRE ROPE
6 x 61 Classification/Bright (Uncoated), IWRC
Nominal Diameter
Approximate Mass
Minimum Breaking
Improved
Extra Improved
Plow Steel**
Plow Steel**
inches
mm
Ib/ft kg/m tons metric tonnes tons
metric tonnes
3 76.2 16.6 24.7
360
327 414 376
3-1/4
82.6
19.5
29.0 419 380
483 438
3-3/8 85.7
21.0 31.3 451 409
518 470
3-112
88.9 22.7 33.8
483 438 555 503
3-3/4
95.3
26.0 38.7 549 498
632 573
4
101.6 29.6
44.1
620 562 713
647
4-1/4
108.0 33.3 49.6 694
630
799
725
4-1/2
114.3
37.4
55.7
772
700
888 806
4-3/4 120.7
41.7
62.1 853
774
981 890
5
127.0 46.2 68.8 937
850
1078 978
To convert to Kilonewtons (kN), multiply tons (minimum breaking force) by 8.896;
lIb == 4.448 newtons (N).
** Minimum breaking forces listed above apply to ropes with bright or drawn galvanized wires. Minimum breakir
forces are 10% lower for ropes with wires galvanized at finish size.
100 • Wire Rope Technical Board - Wire Rope Users Manual, Fourth Edition