Ultrex

Ultrex

Ultrex is a 12-strand single braid of 100% Ultra High Molecular Weight Polyethylene (UHMPE) fiber enhanced with Yale's Maxijacket HP coating supplying superior abrasion resistance. Ultrex's braid angles and twist level are designed to optimize break strength and keep stretch low. UHMPE is the most forgiving high modulus fiber giving better bend over sheave cycling capabilities than other high tech fibers. Ultrex has zero water absorption and maintains its flexibility even in freezing conditions. As is the case for all Yale ropes the strengths shown in the charts are for spliced ropes, and the splice technique for Ultrex is very easily mastered.

 

Diameter Average Spliced  Minimum Spliced Maximum** Weight
Inches (mm) Break Strength* Break Strength* Work Load 5:1 Lbs/ Kg/
    Lbs Kg Lbs Kg Lbs Kg 100ft 100m
1/16 (2.0) 800 360 720 325 160 70 0.1 0.2
1/8 (3.0) 1,900 860 1,710 775 380 170 0.3 0.5
5/32 (4.0) 3,150 1,430 2,835 1,285 630 285 0.5 0.7
3/16 (5.0) 5,250 2,380 4,725 2,145 1,050 475 1.0 1.5
1/4 (7.0) 9,600 4,355 8,640 3,920 1,920 870 1.7 2.5
5/16 (8.0) 13,500 6,125 12,150 5,515 2,700 1,225 2.4 3.6
3/8 (9.0) 20,000 9,080 18,000 8,170 4,000 1,815 3.5 5.2
7/16 (11.0) 25,700 11,665 23,130 10,500 5,140 2,330 4.6 6.8
1/2 (12.0) 37,400 16,975 33,660 15,280 7,480 3,395 6.2 9.2
9/16 (14.0) 45,000 20,430 40,500 18,385 9,000 4,085 7.5 11.2
5/8 (16.0) 53,000 24,060 47,700 21,655 10,600 4,810 9.5 14.1
3/4 (18.0) 75,000 34,050 67,500 30,645 15,000 6,810 13.5 20.1
7/8 (22.0) 98,000 44,490 88,200 40,040 19,600 8,895 19.5 29.0
1 (22.0) 120,000 54,480 108,000 49,030 24,000 10,895 23.5 35.0
1-1/8 (27.0) 148,000 67,190 133,200 60,470 29,600 13,435 32.0 47.7
1-1/4 (30.0) 172,000 78,085 154,800 70,275 34,400 15,615 38.0 56.6
1-5/16 (32.0) 184,000 83,535 165,600 75,180 36,800 16,705 44.0 65.5
1-1/2 (36.0) 230,000 104,420 207,000 93,975 46,000 20,880 57.0 84.9
1-5/8 (40.0) 285,000 129,390 256,500 116,450 57,000 25,875 65.0 96.8
1-3/4 (42.0) 330,000 149,820 297,000 134,835 66,000 29,960 78.0 116.2
2 (48.0) 390,000 177,060 351,000 159,350 78,000 35,410 92.0 137.0


* Knots and abrupt bends significantly reduce the strength of all ropes and lowers the maximum working load.
** Working load is based on static or moderately dynamic lifting/pulling operations. Instant changes in load up or down in excess of 10% of the rope's rated working load constitutes hazardous shock load and would void normal working load recommendation. Consult Yale Cordage for guidelines for working loads and safe use of rope.

 

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