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GLOSSARY
OF WIRE ROPE TERMS
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| Eye or Eye Splice - A loop with or without a thimble formed in the end of a wire rope | Idler - Sheave or roller used to guide or support a rope |
| Factor of Safety - Ratio of breaking strength of a wire rope to total rope stress | Independent Wire Rope Core - Wire rope used as the core of a larger rope |
| Fatigue - Term commonly applied to progressive fracture of wires of a rope | Internally Lubricated - Wire rope or strand having all wires coated with lubricant |
| Fiber Centers - Cords or rope made of vegetable fiber or synthetic fiber used in the center of a strand | Iron Rope - See "Grades, Rope" |
| Fiber Cores - Cords or rope made of vegetable fiber or synthetic fiber used in the core of a wire rope | IWRC - "Independent Wire Rope Core" |
| Filler Wire - Small auxiliary wires in a strand for spacing and positioning other wires | Kink - Sharp bend in a wire rope that permanently distorts the wires and strands |
| Fitting - Any accessory used as an attachment for wire rope | Lagging - External wood covering on a reel of rope or strand |
| Flat Rope - Wire rope made of parallel alternating right lay and left lay ropes sewn together by relatively soft wires | Lang Lay Rope - Wire rope in which the wires in the strands in the rope are laid in the same direction |
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Fleet Angle
- Angle between
position of a rope at the extreme end wrap on a drum, and a line drawn
perpendicular to the axis of the drum through the center of the nearest
fixed sheave
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Lay - Manner in which wires are helically laid into strands or strands into rope |
| Galvanize - To coat with zinc to protect against corrosion |
Left Lay
-
(a) Strand
- Strand in
which the cover wires are
laid in a helix having a left-hand pitch
-(b) Rope
-
Rope in which the strands are laid in a helix having a left-hand pitch
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| Galvanized Rope - Rope made of galvanized wire | Marline Spike - Tapered steel pin used in splicing wire rope |
| Galvanized Strand - Strand made of galvanized wire | Messenger Strand - Galvanized strand or bronze strand used to support telephone and electric cables |
| Galvanized Wire - Wire coated with zinc | Mild Plow - See "Grades, Rope" |
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Grades, Rope
- Classification
of wire rope by its breaking strength. In order of increasing breaking
strengths they are Iron, Traction, Mild Plow Steel. Plow Steel, Improved
Plow
Steel, Extra Improved
Plow Steel
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Modulus of Elasticity - Mathematical quantity giving the ratio, within the elastic limit, between a definite range of unit stress on a wire rope, to the corresponding elongation |
| Grades, Strand - Classification of strand by its breaking strength. In order of increasing breaking strengths they are Common, Siemens Martin, High Strength and Extra-high Strength. A Utilities grade strand is also made to meet special requirement | Mooring Lines - Galvanized wire rope, usually 6x12, 6x24 or spring lay construction, for holding ships to dock |
| Grooved Drum - Drum with grooved surface to accommodate and guide the rope | Non-Rotating Wire Rope - 18x7 wire rope consisting of a 6x7 left lay Lang lay inner rope covered by twelve 7-wire strands right lay regular lay - also 19x7’s. |
| Grooves - Depressions in the periphery of a sheave or drum for positioning and supporting a rope | Peening - Permanent distortion of outside wire in a rope caused by pounding |
| Guard Rail Cable - A galvanized wire rope or strand erected along a highway | Plow Steel - See "Grades, Rope" |
| Guy Line - Strand or rope, usually galvanized, for holding a structure in position | Preece Test - A recognized standard of testing the galvanized coating on wire |
| High Strength Strand - Grade of galvanized or bright strand | Preformed Wire Rope - Wire rope in which the strands are permanently shaped, before fabrication into the rope, to the helical form they assume in the wire rope |
| Preformed Strand - Strand in which the wires are permanently shaped, before fabrication in the strands, to the helical form they assume in the strand |
