Cat’s Eye Ultrex

Single Braid

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Cat’s Eye Ultrex

Cat’s Eye Ultrex is a specially designed product for underground mining. This rope keeps the high strength of Ultrex and adds a reflective component to allow it to be seen in the conditions unique to underground mining.

The Honeywell Spectra® fiber has been demonstrated to have better abrasion resistance, and Yale’s special construction techniques maximize those characteristics.

Ultrex is a 12-strand single braid of Spectra® 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. Spectra® is the most forgiving high-modulus fiber, giving better sheave-cycling capabilities than other high-tech fibers. As is the case for most Yale ropes, the strengths shown in the charts are for spliced ropes.

Cat’s Eye Ultrex Specifications and Data

Diameter (Inches) Average Spliced Break Strength *(Lbs) Minimum Spliced Break Strength *(Lbs) Maximum Working Load 5:1 **(Lbs) Weight (Lbs/100f)
1/2 37,400 33,660 7,480 6.2
9/16 45,000 40,500 9,000 7.5
5/8 53,000 47,700 10,600 9.0
3/4 75,000 67,500 15,000 12.2
7/8 98,000 88,200 19,600 17.6
1 120,000 108,000 24,000 21.2
1-1/8 148,000 133,200 29,600 28.7
1-1/4 172,000 154,800 34,400 36.1
1-5/16 184,000 165,600 36,800 41.8
1-1/2 230,000 207,000 46,000 57.0
1-5/8 285,000 256,500 57,000 65.0
1-3/4 330,000 297,000 66,000 78.0
2 390,000 351,000 78,000 92.0


* Knots and abrupt bends significantly reduce the strength of all ropes and lower the maximum working load.
** Working load is based on static or moderately dynamic lifting/pulling operations. Instantaneous changes in load, up or down, in excess of 10% of the rope’s rated 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.

 

Green working 318 ft. lbs./lb.
Red ultimate 8,300 ft. lbs./lb.

Specific Gravity: 0.97

Dielectric Strength: The maximum allowable leakage for clean, dry Ultrex is 75 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.


Maximum Working Load
Minimum Break Strength
Average Break Strength

Cat’s Eye Ultrex Splicing Instructions

Approved Splice Technique: #10015109, #10018009.