Core The core of a steel wire rope serves as a foundation for the strands, providing stability by keeping them in place throughout the life of the rope. Wire ropes can be supplied with either a fibre or wire core. Grade Wire rope can be manufactured in different steel grades, which directly affects the Minimum Breaking Force, (MBF). The higher the grade the higher the MBF. Common wire grades include: 1570, 1770, 1960 and 2070 Finish Wire Ropes can be supplied as Black (self-colour), Galvanised or Stainless Steel. Wire rope is lubricated at the time of manufacture, to help reduce friction between wires and strands, and the friction between the rope and drum or sheave. In addition, the lubrication retards corrosion and inhibits possible rotting of the fibre core.
Construction and Lays
RHOL Right Hand Ordinary Lay LHOL Left Hand Ordinary Lay RHLL Right Hand Lang’s Lay LHLL Left Hand Lang’s Lay Pref Preformed Post Postformed WRC Wire Rope Core WSC Wire Strand Core FC Fibre Core FW Filler Wire Strand Construction D or d Diameter (in millimetres)
6 X 19 Fibre Core Wire
Right Hand Ordinary Lay
7 X 7 Wire Strand Core
Left Hand Ordinary Lay
Right Hand Lang’s Lay
7 X 19 Wire Strand Core
Left Hand Lang’s Lay
Right Hand Alternate Lay
Rotating or Non-Rotating Rotation resistant wire ropes are manufactured to resist rotation under load and are suitable for crane use and where long lengths are required.
Non-Rotating or Rotation Resistant Wire Rope – should be used when: • Lifting an unguided load in single part
• Lifting an unguided load at great height with multi part reeving.
A regular rope (rotating) wire rope should be used when: • Lifting a guided load on several falls at a small height (e.g. overhead crane)
• When lifting loads with right-hand and left-hand ropes in pairs.
4 | EMAIL info@bunzlsafety.com.au | bunzlsafety.com.au | CALL 1300 977 577
CALL 1300 977 577 | bunzlsafety.com.au | EMAIL info@bunzlsafety.com.au | 5
Made with FlippingBook - Online Brochure Maker