Terminals upgrading to bigger, faster cranes are increasingly finding that although new cranes with a 22-wide outreach may be cheaper to purchase in relative terms than cranes they are replacing, maintenance costs are far higher. One of the key maintenance areas is the rope and reeving system and larger dimensions and higher speeds can dramatically increase maintenance costs.
It is well known that rope life is dependent on a number of factors such as the number of bends and sheaves in the reeving system, sheave to rope size ratio (D/d ratio), the type of rope and the lubrication system. However, wear factors on ropes and reeving systems have increased dramatically as cranes have got larger and faster....
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This complete item is approximately 3800 words in length, and appeared in the November 2004 issue of WorldCargo News, on page 46.
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