Polydyne Cordage / High Strength Double Braided Rope

Polydyne

Polydyne™ is a double braided rope which utilizes a polyester sleeve over a nylon core. Despite the dissimilar stretch characteristics of these fibers, Yale engineers have produced constructions where both fibers contribute. The resulting rope has high breaking strength and more stretch in its working load range, which in many applications is a plus. Polydyne is up to taking more dynamic abuse without being degraded prematurely. Take special note of the working energy absorption rating which is the amount of energy a rope absorbs before reaching its working load. The ultimate energy absorption of this rope is also correspondingly high. All this and a tough polyester jacket make this a long wearing rope with extraordinary dynamic capabilities.

 

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
1/4 (6.0) 2,500 1,135 2,250 1,022 500 227 1.9 2.8
5/16 (8.0) 3,800 1,725 3,420 1,553 760 345 2.8 4.2
3/8 (9.0) 5,000 2,270 4,500 2,043 1,000 454 4.4 6.6
7/16 (11.0) 7,500 3,405 6,750 3,065 1,500 681 5.8 8.6
1/2 (12.0) 11,000 4,990 9,900 4,491 2,200 998 7.6 11.3
9/16 (14.0) 15,000 6,810 13,500 6,129 3,000 1,362 9.7 14.4
5/8 (16.0) 18,900 8,580 17,010 7,722 3,780 1,716 13.6 20.3
3/4 (18.0) 26,000 11,800 23,400 10,620 5,200 2,360 18.5 27.5
7/8 (22.0) 33,600 15,250 30,240 13,725 6,720 3,050 24.4 36.3
1 (24.0) 42,000 19,065 37,800 17,159 8,400 3,813 31.5 46.9
1-1/8 (27.0) 52,000 23,605 46,800 21,245 10,400 4,721 41.5 61.8
1-1/4 (30.0) 65,000 29,510 58,500 26,559 13,000 5,902 50.8 75.6
1-5/16 (32.0) 77,000 34,955 69,300 31,460 15,400 6,991 55.0 81.9
1-1/2 (36.0) 90,000 40,860 81,000 36,774 18,000 8,172 66.0 98.3

* Knots and abrupt bends significantly reduce the strength of all ropes and lowers maximum working load.
** Working load based on static or moderately dynamic lifting/pulling operations. Instantaneous changes in load up or down, in excess of 10 percent 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.

 

Print this page

Download data sheet