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  1. aec062859

    How are bolts selected?

    drawoh, I agree. without an elastic component, impact takes place. Unfortunately the force is not easily determined since it is a function of time of impact. I am hoping someone knows how to determine the shear force using the kinetic energy of the trolley + hoist. At the end, I will equip...
  2. aec062859

    Weight loading for a ubolt

    Kingnero, The normal force created by the U-bolt depends on how tight the nuts are and the coefficient of friction between zinc coated steel. If a torque wrench is used, the developed tension can be easily estimated. The coefficient of friction can also be obtained thru charts. The contact...
  3. aec062859

    How are bolts selected?

    Hello, I have a hoist equipped with a motorized trolley that needs end stops. Each end stop will be made of Two 4"x4"x"6" L-shapes (one per side)and these two will be fastened to the monorail's web with TWO gr5 bolts. Weight of trolley and hoist is 200 lbs, trolley speed is 30fpm. No...
  4. aec062859

    Determining adequate bolt size

    Hi Jed, Thanks for your reply. I agree, however, I would like to see how kinetic energy is used to determine the shear force the bolts need to resist. Would you have any idea? Thanks! aec062859https://www.eng-tips.com/viewthread.cfm?qid=439291
  5. aec062859

    Determining adequate bolt size

    Hello, I have a hoist equipped with a motorized trolley that needs end stops. Each end stop will be made of Two 4"x4"x"6" L-shapes (one per side)and these two will be fastened to the monorail's web with TWO gr5 bolts. Weight of trolley and hoist is 200 lbs, trolley speed is 30fpm. No...

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