Question:
Realizing that flush with the threaded insert is typical, in the situation where the kee has been somehow driven deeper than flush where the opposite end of the kee protrudes from the end of the insert, at what depth would the installation be considered unacceptable.
Wouldn’t over driving the kee reduce the bearing surface between the material and the insert? Would this subsequently compromise the rotational holding strength of the insert?
please advise,
Answer:
The kee’s should be installed flush. This is given if they are installed with our tooling.
If necessary, the kee’s could be driven deeper than the surface, but we see no sense for it. In this case the kee’s should not be driven deeper than the end of the KeenSerts.
There is no impact to the rotation holding strength of the inserts if the kee’s are not driven deeper than the end of the KeenSerts.
Hope this information helps.
Question :
I am enquiring about the internal thread of the Keensert. I would like a rough estimation of the life cycle of the anti galling properties of the thread, assuming a good quality stainless steel bolt is used.
I am trying to find out the life cycle expectancy of a stainless steel
anti galling silver plated Keensert. I would like to know how many times
the threaded insert could be utilized before the silver plating would
start to wear away and whether dry film lubrication could be applied to
extend life. The partnumber we would use is KNH624J SP DFL
We are considering a Keensert for a repetitive use application which would require an internal thread with pure silver plating
Answer :
the life expectancy is improved by a lubrification, this is standard only on self locking keenserts.
the keensert you require is very special! we recommend to carry out tests, the dry film lube is according to MIL PRF 46010
Here you can find out the partnumbering:
keensert partnumbering for inch size threads
