Force of bolt
Force of bolt
(OP)
If I was to use a threaded bolt and nut for a pressing device would the formula to calculate the torque required be t= coefficient x diameter of bolt x force ie 400lbs of force with a 1" dia bolt and .2 coefficient = 80in lbs of torque





RE: Force of bolt
RE: Force of bolt
It also depends how accurate a bolt load you require because torqueing bolts is subject to a tolerance of +/- about 25%.
RE: Force of bolt
another day in paradise, or is paradise one day closer ?
RE: Force of bolt
for something like this, about the only way to get an accurate number will be to run some tests and then get the nut factor constant from those tests.
RE: Force of bolt
RE: Force of bolt
The equation is accounting for the leverage of the threads relative to the torque. 50 inch lbs on a 1 inch bolt has a leverage of 50 lbs while on a .5 in bolt is has a leverage of 100lbs.
RE: Force of bolt
RE: Force of bolt
RE: Force of bolt
http://www.torqueleader.com/linkservid/EAEA3A24-90...
RE: Force of bolt
another day in paradise, or is paradise one day closer ?
RE: Force of bolt
http://en.wikipedia.org/wiki/Leadscrew
RE: Force of bolt
RE: Force of bolt
RE: Force of bolt
RE: Force of bolt
β = half thread angle = 30°
r = screw end radius
P = pitch
RE: Force of bolt
Regards,
Cockroach