Design and Engineering Forum Forum Moderators: randykimball, Administrator
 Posted by: robertedelong ® 04/21/2006, 20:17:21 Author Profile eMail author Edit Lets says we have a 5/8" shaft that has a constant 80 ft lbs of torque applied that causes it to rotate (rpm is not available); how do we arrive at a NM measurement?

 Replies to this message

 Re: torque measurement Re: torque measurement -- robertedelong Post Reply Top of thread Forum
 Posted by: zekeman ® 04/22/2006, 09:16:38 Author Profile eMail author Edit What has NM got to do with angular motion? NM is a measure of torque and is easily convertable to ft-lb which are both units of torque. If you are asking what happens to a pure shaft under torque it is simply T=Ia where T= torque I =moment of tinertia of shaft a = angular acceleration w=at where w= angular velocity t= time torque is applied

 Re: torque measurement Re: Re: torque measurement -- zekeman Post Reply Top of thread Forum
 Posted by: robertedelong ® 04/22/2006, 10:29:54 Author Profile eMail author Edit OK; Maybe I should re phrase this issue; you're already way over my head.when generator specs are stated, the torque is usually shown in Newton meters; that is: the turning force needed to produce X amount of KW. now let's look at maximum torque at maximum load (not starting torque); Now let's rotate a 5/8" shaft by a verticle upward thrust of 80 pounds constant; the shaft rpm is unknown; what is the newton meter torque of the shaft?