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.
Breaking strength of 3 16 wire rope.
Just being able to calculate breaking strength doesn t give one a safety margin.
This would put you into 5 16 cable.
The weakest point in the line is the knot or slice.
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General purpose aircraft grade braided wire rope 12 99.
6 x 19 iwrc wire rope.
Starlift xtra wire rope has one of the highest strength to diameter ratios on the market.
This general purpose aircraft grade braided wire cable is designed for strength and flexibility.
It is recommended not to exceed 1 3 3 1 design factor of the rope s strength to maintain a useful service life.
The same standard requires a design factor of 5 0 for rotation resistant ropes.
However a splice is stronger than a knot.
Rope diameter minimum breaking strength safe load weight in mm lb f kn lb f kn lb m ft kg m 1 4.
Asme b30 5 mobile and locomotive cranes requires a design factor of 3 5 for 6 strand hoist ropes.
These are the listed breaking strengths of each rope type and size.
Knots and splices will reduce the breaking strength of a line by as much as 50 to 60 percent.
The mbf of starlift xtra is such.
6x37 class wire ropes with 27 46 wires per strand.
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Industrial wire rope 7390 harrison avenue cincinnati ohio 45247 888 345 0919.
For wire rope generally you want a safety factor of 5 1.
6x19 class improved plow steel.
Crown bolt 64742 at 18 58.
So if you want a 1700 lbs working load limit wll take that number x 5 which 8500.
With a 3960 lb.
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2086 exchange drive st.
Aircraft grade 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.
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Maximum load capacity the wire.