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.
|Diameter (Inches)||Average Spliced Break Strength *(Lbs)||Minimum Spliced Break Strength *(Lbs)||Maximum Working Load 5:1 **(Lbs)||Weight (Lbs/100f)|
* 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.
Approved Splice Technique: #10015109, #10018009.