![]() It should never be allowed to drop below the lower flange of the reel. Re-reeling also may be done with reels having their shafts vertical, but extreme care must be taken to ensure that the rope always remains taut. Also acceptable, but less so, is re-reeling from the bottom of one reel to the bottom of another. Always wind wire rope from the top of the one reel onto the top of the other. This will avoid causing a reverse bend in the rope. When wire rope is wound onto a sheave or drum, it should bend in the manner in which it was originally wound. ![]() Wires in the strands at the kink are permanently damaged and will not give normal service, even after apparent “re-straightening.” Drum Winding They also are caused by bending a rope around a sheave having too severe a radius. This happens where loops are pulled through by tension on the rope until the diameter of the loop is only a few inches. ![]() Kinks are places where the rope has been unintentionally bent to a permanent set. Great stress has been placed on the care that should be taken to avoid kinks in wire rope. Pulling one end through the middle of the coil will only result in kinking. Also, wire rope cannot be uncoiled like hemp rope. Torsions are put into the rope by every loop that is pulled off, and the rope becomes twisted and unmanageable. If a coil of wire rope is laid flat on the floor and uncoiled by pulling it straight off, spirals will occur and kinking is likely. The rope is allowed to uncoil naturally with the lay, without spiraling or twisting. One person must hold the end of the rope while a second person rolls the coil along the floor, backing away. There is only one correct way to uncoil wire rope. If handled in a careless manner, reverse bends and kinks can easily occur. Wire rope always should be handled in a way that neither twists nor unlays it. If a reel of wire rope is laid on its flange with its axis vertical to the floor and the rope unreeled by throwing off the turns, spirals will occur and kinks are likely to form in the rope. Lightweight reels can be properly unreeled using a vertical shaft the same care should be taken to keep the rope taut. A second person regulates the speed of the turning reel by holding a wood block against the flange as a brake, taking care to keep slack from developing on the reel, as this can easily cause a kink in the rope. One person holds the end of the rope and walks a straight line away from the reel, taking the wire rope off the top of the reel. To unreel wire rope from a heavy reel, place a shaft through the center and jack up the reel far enough to clear the floor and revolve easily. A mistake could be made by measuring the smaller dimension. Rope diameters are determined by measuring the circle that just touches the extreme outer limits of the strands- that is, the greatest dimension that can be measured with a pair of parallel-jawed calipers or machinist’s caliper square. Rope diameter is specified by the user and is generally given in the equipment manufacturer’s instruction manual accompanying the machine on which the rope is to be used. ![]()
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