Break Away Torque, HOw to calculate |
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Break Away Torque, HOw to calculate |
Brett W |
Mar 26 2006, 11:44 PM
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#1
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Advanced Member Group: Members Posts: 2,856 Joined: 17-September 03 From: huntsville, al Member No.: 1,169 Region Association: None |
We all know that the torque needed to loosen a fastener is usually higher than the torque at which the fastner is tightened. Is there a way to calculate this number.
I just got a new 3/8 Impact wrench and was doing some test with it. We torqued a 1in course thread bolt to 250 ft-lbs. Then used this impact to break it loose. It did it with no problems at 175 psi. Couldn't touch it at 90psi. ANy body know how to calculate that torque? |
Brett W |
Mar 27 2006, 12:10 AM
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#2
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Advanced Member Group: Members Posts: 2,856 Joined: 17-September 03 From: huntsville, al Member No.: 1,169 Region Association: None |
I am torquing the nut with the torque wrench and then breaking it loose with the impact.
Check out this impact (IMG:http://buy1.snapon.com/catalog/OBJECTS/50600/50554.JPG) http://buy1.snapon.com/catalog/item.asp?P6...ore&dir=catalog |
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