PoBOn™
Rope Characteristics
Yale PoBOn is a double braided rope consisting of a polyester sleeve covering an inner load-bearing core of 100% Zylon® PBO. Zylon PBO poly
(p-phenylene-2, 6-benzobisoxazole), manufactured by Toyobo of Japan *, is a rigid isotropic crystal polymer.
It has outstanding tensile strength, high modulus, flame resistance and thermal stability.
PBO has some moisture gain in the range of 0.6%, slightly greater than polyester, and is dimensionally stable against humidity.
Yale PoBOn is identified by a single black and a single red strand separated by four white strands, braided into the sleeve.
Specific Gravity: -1.48
| Diam. Inches | Average Break Strength Pounds | Minimum Break Strength Pounds | Max Working Load 5:1 | Weight Pounds per 100 ft. |
|---|---|---|---|---|
| 3/16 | 4,400 | 3,960 | 880 | 1.2 |
| 1/4 | 7,000 | 6,300 | 1,400 | 2.2 |
| 5/16 | 11,000 | 9,900 | 2,200 | 2.8 |
| 3/8 | 17,500 | 15,750 | 3,700 | 4.2 |
| 7/16 | 24,000 | 21,600 | 4,800 | 6.5 |
| 1/2 | 30,000 | 27,000 | 6,000 | 8.1 |
| 9/16 | 36,500 | 32,800 | 7,300 | 10.4 |
| 5/8 | 46,000 | 41,400 | 9,200 | 12.2 |
| 3/4 | 68,000 | 61,200 | 13,600 | 18.0 |
| 7/8 | 95,200 | 85,600 | 19,040 | 24.0 |
| 1 | 121,000 | 108,900 | 24,200 | 31.0 |
| 1-1/8 | 152,000 | 136,800 | 30,400 | 39.5 |
| 1-1/4 | 181,000 | 162,900 | 36,200 | 46.2 |
Shock Loads
All high modulus fibered ropes have low stretch and little tolerance for shock loads. It’s ill advised to select a high strength rope in an attempt to solve shock loading problems.
Elastic ElongationThe coloured area under the curve represents the rope’s energy absorption capability.
PoBOn is made to Yale Specification #YCI-PO-0099. |
|
Green working 185 ft. lbs/lb
Red ultimate 4,444 ft. lbs/lb.