Quote:
Originally Posted by porterdog
I believe one of the main drivers behind this was to eliminate the need for careful
control of the axial position of the studs on installation. Instead of "Install to an exposed height of xxxx mm," you run them in until they bottom; the install height is automatically controlled.
I find that appealing from a DIY perspective; one less thing to worry about.
$0.02
|
Mmm!
Tricky - if you bottom out a stud into an aluminium cylinder block the differential expansion that occurs can make it easier for the thread to pull out particularly if the preload is relatively high.
There are also issues to do with any remaining cleaning liquids causing a hydraulic lock and causing varying preload/torque relationships.
It is not really good practice to bottom a stud - it is much, much better to install them correctly and not worry about them pulling out later.