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  • Users: Mikey41
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  1. Mikey41

    Screw threads

    I am new to this group and have a problem to discuss. I have a 25 ton machine screw jack, used as an actuator, which has failed in service. The jack in this application is normally in tension, up to 28,000 lbs. This structure is 40 feet in the air. A crane is not available nor usable as this...

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