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torque??
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Posted by: ghegdahl

07/05/2004, 12:15:03

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can anybody give me a rough idea how many ft lbs of torque a 1 and half inch steel bar can withstand?? thank you






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Re: torque?? Smile
Re: torque?? -- ghegdahl Post Reply Top of thread Forum
Posted by: mikebull

07/06/2004, 07:41:25

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The formulae is :-

Torque (lb.ft) = allowable stress (psi) x Pi x D^3/16 /12

So for a 1.5" steel bar with a working allowable of 8000 psi you can safely transmit 442 lb.ft.

If you have a step or other stress concentration in the shaft then the torque will have to be less by this factor (between 1 and 3 ?)

Every mechanics textbook will give you the above info.







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Re: torque??
Re: Re: torque?? -- mikebull Post Reply Top of thread Forum
Posted by: ghegdahl

07/06/2004, 10:50:36

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thank you






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