China Stainless Steel Wire Rope 1X19-3mm, 250m, Find details about China Wire, Steel Wire from Stainless Steel Wire Rope 1X19-3mm, 250m
Individual metal wires are laid (twisted) into a helix to form a strand, which typically contains 7 wires (1 x 7) or 19 wires (1 x 19). Wire rope is fabricated from a varying number of these strands, such as 7 x 7 and 7 x 19. |
The term cable is often used interchangeably with wire rope. in general, "wire rope" refers to diameter larger than 3/8 inch. However, sizes smaller than this are designated as cable or cords. |
In a cross laid wire rope, its element wires cross each other at points (Point-contact). The ropes meet the drum or sheave at points and wear them heavily. Small area of contact leaves relatively large spaces between wires. The wires are easy to have a large relative sliding and fail (break) due to fatigued from primary and secondary bending. |
component wires of different layers meet each other along a line (called Parallel laid rope). With wider area of contact, relative sliding between strand element wires is largely reduced to minimize wire breaks caused by internal wire wear especially when the ropes are subject to repeated bending |