Load bearing capacity of a friction hinge?

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RCAN
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The door is 4.5 lbs evenly distributed. Width is 7" and length is 19". The door is mounted by using a friction hinge at the center . How to calculate the total load acting on the hinge? What is the maximum load bearing capacity of the hinge? Length of hinge is 3.2" and diameter of pin is .230 inches, leaf thickness is .06".
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That is not the best arrangement for a hinge if you are worried about strength . Ideally you should have two hinges - one at the top of the door and one at the bottom .
 
Agree with your point regarding two hinges. Here in my application space is limited to provide hinges at top and bottom. The door will be in closed condition always and open only for service (max two times a year)
 

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