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 Ultra High Molecular Weight Polyethylene (UHMWPE) 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 UHMWPE 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. UHMWPE 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)|
|Diameter (mm)||Average Spliced Break Strength *(kg)||Minimum Spliced Break Strength *(kg)||Maximum Working Load 5:1 **(kg)||Weight (Kg/100m)|
* 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: 0.97Dielectric 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.
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