Rigging (suspension and moving of machine tools)

Rigging (in this context) is the act of safely supporting and transporting machine tools.

Some pointers:

  • Twisted rope has a much higher sliding coefficient (ropes are rougher). It can take a lot more static tension to overcome sticktion.
  • This makes it harder to “synch” up the rigging before hoisting the load
  • Twisted rope frays more easily; more rapidly loses ultimate tensile strength when it frays
  • Harder to spot damage on twisted rope
  • Requires a much larger bending radius
  • Unwinds when a load in placed on it, unless it is anti-rotational rope; automatically gets longer when it unwinds
  • Knots can reduce the ultimate tensile strength by a huge margin
  • Nylon or other man-made fiber webbing is much stronger
  • Nylon can degrade with exposure to UV light, oxygen, some acids, solvents with long exposure