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I finally snapped my main boom hoist cable last Tuesday on a job in Phoenix
I was lifting a 12 ton AC unit onto a rooftop and the cable just gave way with a loud pop. Luckily the load was still a few feet off the ground so it just dropped onto the dirt, not the building. Anyone else ever have a cable fail on them like that? What did you do to figure out what caused it?
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the_andrew9d ago
...actually that's the lifting cable snapping isn't quite what they call the "main boom hoist cable" on most cranes. You probably mean the main load hoist cable, the boom hoist cable is the one that raises and lowers the boom itself. I had a similar thing happen a few years back on a job in El Paso, ended up being a broken wire strand that chafed against the sheave for weeks before it let go mid-lift. Your best bet is to get the failed section tested at a certified lab, they can usually tell you if it was from overloading, fatigue, or a manufacturing defect.
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avery_stone959d ago
Did you read that recent report about crane cable failures being caused by improper lubrication?
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