For wire rope generally you want a safety factor of 5 1.
Breaking strength of 3 16 wire rope.
These wire ropes come in fiber core or iwrc variations with diameters ranging from to 1 1 3 and tensile strengths of 2 74 tons to 69 4 tons.
Starlift xtra wire rope has one of the highest strength to diameter ratios on the market.
Industrial wire rope 7390 harrison avenue cincinnati ohio 45247 888 345 0919.
Rope diameter minimum breaking strength safe load weight in mm lb f kn lb f kn lb m ft kg m 1 4.
6x37 class wire ropes with 27 46 wires per strand.
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The weakest point in the line is the knot or slice.
It is recommended not to exceed 1 3 3 1 design factor of the rope s strength to maintain a useful service life.
Aircraft grade wire rope.
The mbf of starlift xtra is such.
Asme b30 5 mobile and locomotive cranes requires a design factor of 3 5 for 6 strand hoist ropes.
So if you want a 1700 lbs working load limit wll take that number x 5 which 8500.
Just being able to calculate breaking strength doesn t give one a safety margin.
2086 exchange drive st.
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However a splice is stronger than a knot.
This general purpose aircraft grade braided wire cable is designed for strength and flexibility.
This would put you into 5 16 cable.
6x19 class improved plow steel.
Rope diameter minimum breaking strength safe load safety factor 12 weight in mm lb f kn lb f kn lb m ft kg m 3 16.
Crown bolt 64742 at 18 58.
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Maximum load capacity the wire.
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With a 3960 lb.
General purpose aircraft grade braided wire rope 12 99.
2 5 x 1 57 2 x 900 5 546 pounds of breaking strength.
6x19 class wire ropes with 15 26 wires per strand.
6 x 19 iwrc wire rope.
The same standard requires a design factor of 5 0 for rotation resistant ropes.