Rope Characteristics

Unitrex XS Max Wear, Uniline’s high-tech cousin, is a parallel-core rope of Ultra High Molecular Weight Polyethylene (UHMWPE), wrapped with a neoprene tape and over-braided with a tough jacket of high-tenacity polyester. The result is a synthetic cable, somewhat stiffer than your usual rope, which is much like wire in its stretch characteristics.

Unlike wire, Unitrex is much lighter and easily handled. Due to its toughness, we are comfortable assigning it a higher working load rating, which is 25% of its breaking strength.

Unitrex XS Max Wear has high strength retention in service, which is supported by field studies and our long-standing track record with Uniline polyester. Unitrex’s tough rubber layer protects its UHMWPE core, and the outer jacket is saturated with urethane, making it the toughest UHMWPE rope you can buy. All of Yale’s parallel-core ropes are torque free, with bonded cores preventing contamination of the internal strength member. Unitrex XS can be quickly terminated and/or joined with a TechEye2 or TechJoin2.


Breaking Strengths

Diameter
(Inches)		 Weight
(Lbs/100f)		 Average Spliced Break Strength*
(Lbs)		 Minimum Spliced Break Strength*
(Lbs)		 Maximum Working Load 4:1**
(Lbs)
0.44 6.7 20,000 18,000 5,000
0.53 9.2 26,000 23,400 6,500
0.58 11.4 34,000 30,600 8,500
0.63 13.5 42,500 38,250 10,625
0.71 16.9 50,500 45,450 12,625
0.84 24.2 73,500 66,150 18,375
1.00 32.4 100,000 90,000 25,000
1.15 42.4 125,000 112,500 31,250
1.25 52.5 158,000 142,200 39,500
1.40 64.9 195,000 175,500 48,750
1.75 92.6 264,000 237,600 66,000
1.94 98.8 310,000 279,000 77,500
1.99 113.3 360,000 324,000 90,000
2.20 144.0 430,000 387,000 107,500
* Knots and abrupt bends significantly reduce the strength of all ropes and lower maximum working load.
** Working load is based on static or moderately dyanmic lifting/pulling operations. Instantaneous changes in load, up or down, in excess or 10% of the rope’s related working load constitute hazardous shock load and would void the normal working-load recommendation. Consult Yale Cordage for guidelines for working loads and the safe use of rope.
Diameter
(mm)		 Weight
(Kg/100m)		 Average Spliced Break Strength*
(kg)		 Minimum Spliced Break Strength*
(kg)		 Maximum Working Load 4:1**
(kg)
11 10.0 9,080 8,172 2,270
13 13.7 11,800 10,620 2,950
15 17.0 15,435 13,892 3,859
16 20.1 19,295 17,366 4,824
18 25.2 22,925 20,633 5,731
21 36.0 33,365 30,029 8,341
25 48.2 45,400 40,860 11,340
29 63.1 56,750 51,075 14,188
32 78.2 71,730 64,557 17,933
36 96.6 88,530 79,677 22,133
44 137.9 119,855 107,870 29,964
49 147.1 140,740 126,666 35,185
51 168.7 163,440 147,096 40,860
56 214.4 195,220 175,698 48,805
* Knots and abrupt bends significantly reduce the strength of all ropes and lower maximum working load.
** Working load is based on static or moderately dyanmic lifting/pulling operations. Instantaneous changes in load, up or down, in excess or 10% of the rope’s related working load constitute hazardous shock load and would void the normal working-load recommendation. Consult Yale Cordage for guidelines for working loads and the safe use of rope.

Rope Details

Fiber Type: UHMWPE from DSM Protective Materials
Elongation at WL: 0.5%
Elongation at Ult Break: 3.0 – 3.5%
Specific Gravity: 1.10 g/cc
Dielectric Strength: The maximum allowable leakage for clean, dry Unitrex is 50 micro-amperes when tested at 100kV per Yale Method 712-1701 Rev 1 “Routine Production Test”. Absorbed and entrained moisture or impurities will increase rope’s conductivity dramatically.

Elastic Elongation

The coloured area under the curve represents the rope’s energy absorption capability.

Green Working 247 ft. lbs/lb.
Red Ultimate 6,893 ft. lbs/lb.
Maximum Working Load
Minimum Break Strength
Average Break Strength