How is tightening torque determined?
The Torque/Tension Equation is a method used to estimate the torque/tension relationship in an assembly. T = (K D P)/12 can be used to developt a torque value that will achieve a certain tension or clamp load. T = Torque (ft. -lbs.)
How much should I tighten bolts?
In general, you should make the bolt tight enough so that the items it is holding together stay together, but not so tight that you damage the bolt’s threads. You should tighten bolts properly so that the bolt performs properly.
Why is over tightening bad?
Everyone who has ever worked with fasteners has accidentally messed one up at some point. One of the most damaging ways to do that is by over-tightening, or over torquing the fastener. This can result in stripping screws, snapping screw heads and damaging pre-tapped threading.
What happens if you over torque bolts?
The Importance of Proper Torque Typically, an under torqued bolt will deform and be unable to provide as much clamping force as needed. An over torqued bolt will break.
How tight should electrical connections be?
Along that same line, one might ask, “How tight should an electrical connection be?” The simple answer is, “Tight enough to carry the maximum circuit current forever with- out overheating, arcing, or significant voltage drop.” Unfortunately, that answer is no more useful than Lincoln’s.
Why do you torque electrical connections?
Loose connections allow energy loss, so inspecting electrical connections for proper torque can result in energy savings. It’s important to remember that for properly torqued connections, you don’t want them to be too loose or too tight. A loose connection is obvious, but a tight one that is now stripped is less so.
Is there a way to measure the tightening torque?
The problem is that there is no practical way to measure the clamping force in normal production situations. Consequently the value of the clamping force is usually referred to as the tightening torque.
What is the Pocket Guide to tightening technique?
POCKET GUIDE TO TIGHTENING TECHNIQUE This booklet provides an introduction to the technique of us- ing threaded fasteners for assembling components, the ap- plication of power tools for the assembly and the influence of tool selection on the quality of the joint. 1 WHY THREADED . FASTENERS?
What’s the best way to tighten a rod?
“The recommended method for accurately tightening rod bolts is to use the stretch method to properly preload the bolt. This is the method recommended regardless of the engine building situation, rod material, or fastener material,” says Skeen.
How is the tightening torque related to the clamping force?
Consequently the value of the clamping force is usually referred to as the tightening torque. As the clamping force is a linear function of both the turning angle of the screw and the pitch of the thread, there is a direct relation between the clamping force and the tightening torque within the elastic range of the screw elongation.