Wheel Torque

[frank j. bauer]

At 08:14 AM 10/22/2002, Richard J Lebens wrote:
>When they (MEs) specify a torque on a bolt, which should set the
>tension along the axis of the bolt do they also add in the coefficient
>of friction between the steel to steel junction of the threads?  The
>rotary motion being converted to linear motion by sliding two inclined
>planes together? Is this why adding an anti seize (lubricant) will mess
>this up?  Is this why you're supposed to torque the bolt in one
>continuous motion?

torque measurements should be based on the dynamic friction between the
surfaces, which is normally lower than the static friction between surfaces.
a lubricant further lowers the coefficient of friction between the surfaces...

frank