Tension Mechanism
Converting rotational force into axial tension ensures the development of a specific load in a bolted joint. Utilizing torque wrench clamping prevents the stripping of threads and the loosening of components under vibration. The amount of tension created depends on the friction between the threads and the underside of the bolt head.
This method is effective only when the lubrication and the condition of the threads are well controlled.
Assembly Consistency
Utilizing this tool provides a repeatable way to assemble mechanical systems without overstressing the fasteners. Every bolt is tightened to a predetermined value that has been calculated to maintain the seal and the structural integrity.
The Process
The technician applies force until the wrench reaches the set point and provides a tactile or audible signal. This ensures that the clamping force is distributed evenly across the joint to prevent warping or leaking.
Lubrication Variable
Variation in the friction coefficient can lead to large differences in the actual tension for the same applied torque. If the threads are dry or corroded, the clamping force will be much lower than the intended value. Correct application of this method ensures that the joint remains secure throughout its service life.
