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| ILE: ADVISOR |


Just like with an automobile, regular inspection and maintenance can identify problems and will help to prolong the life of an overhead crane system.


The best way to prevent damage to, or failure of, a wire rope is to inspect it prior to each shift. If any evidence of damage is observed, the wire rope should be properly disposed of to prevent further usage. Also, make sure that the wire rope is properly lubricated. Proper lubrication of the wire rope has two primary benefits:


1. Reduces friction as the individual wires move over each other


2. Provides corrosion protection and lubrication in the core, inside wires, and outside surface


2. CRANE SKEW AND ALIGNMENT ISSUES An overhead crane that is out of alignment and skewing as it travels down the runway can cause significant stresses and damages to the entire crane system. Te problem with a crane that isn’t tracking properly is that over time, forces that weren’t accounted for in the design and installation of the overhead crane cause stresses to the runway beams themselves and also to the tie-backs or building support structures. Tese types of stresses can result in:


28 DECEMBER – JANUARY 2018 INDUSTRIAL LIFTING EXCHANGE


• Accidents • Crane failure or derailment • Equipment downtime and productivity loss • Costly repairs and replacement of parts


A crane that isn’t tracking properly also causes extensive wear to the wheels, wheel bearings, and wheel flanges—as well as premature wear to the motor drives and other equipment. Tere are certain signs that your crane may not be aligned


properly and is skewing as it moves down the runway. When your crane is in operation, be aware of the following:


• Loud scraping sounds • Broken or cracked wheel flanges • Abnormal wear on the wheels, wheel bearings, and rails


• Extra power required to move the crane through certain areas of the runway


• Wheels that float or climb over the rail and then crash down


Te best way to prevent overhead crane skew and alignment issues is to have your crane regularly inspected by a reputable


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