Dry strength shock load absorption ability.
Wire rope ratings strength.
Minimum sling length when using standard eyes.
M f g 1 where.
Aggregate strength refers to the collective breaking strength of all of the wires in a single cable when a manufacturer tests them individually.
Cordage instutitute uses refernece size number which is the approximate circumference of the rope.
Recommended safe working load a 5 1 design factor lbs recommended safe working load a 5 1 design factor kg recommended safe working load a 3 5 1 design factor lbs.
D d ratio is the ratio of the diameter.
Nominal strength in kg.
Nominal strength in pounds.
The strength of the sling is decreased.
Efficiency rating depends on rope size and core type.
1 ton 2 000 lbs.
Basket ratings are based on a minimum d d of 25.
Splicing or end attachment efficiency.
Rated capacity is based on nominal wire rope breaking strength.
A fitting having an efficiency rating of 90 may very well develop 100 of the rope s catalogue breaking strength because the rope s actual breaking may very well be 5 15 higher.
Starlift xtra wire rope has one of the highest strength to diameter ratios on the market.
For choker hitch the angle of choke shall be 120 degrees or greater.
Number of parts of rope in the sling.
The same standard requires a design factor of 5 0 for rotation resistant ropes.
1 use only with 6 strand wire rope.
Rated load based on pin diameter no larger than one half the natural eye length or not less than the nominal sling diameter.
M 10 9 103 n 9 81 m s2 1111 kg.
F force weigh t n m mass kg g acceleration of gravity 9 81 m s2 maximum safe mass for a 3 8 wire rope where the safe load is 10 9 kn can be calculated as.
It is recommended not to exceed 1 3 3 1 design factor of the rope s strength to maintain a useful service life.
Strength breaking tenacity dry grams denier wet strength vs.
Asme b30 5 mobile and locomotive cranes requires a design factor of 3 5 for 6 strand hoist ropes.
Nominal strength in short tons.
Type of hitch vertical choker or basket.
Minimum breaking strength refers to the smallest load that will pull a piece of wire rope apart.
Wire rope slings wire rope environmental considerations.
Basket hitch capacity based on minimum d d ratio of 25 1.
