Some technical tips please
I did a little searching on the net to find the various coefficients of expansion and found the following which was quite helpfull.
http://muller.net/mullermachine/docs/temperature.html
So last night I tried to install those hard to find SKF 633007 C bearings into the uprights in my RF82 .It seems to be a very tight fit , but did not have a good enough inside micrometer to measure it exactly, will head to a local machine shop to get the exact measurements if I need to.
I had the bearings in the freezer overnight and had the upright in the oven, at 275 deg for an hour or so ( wife was out shopping) and when I tried to fit it together the bearing was still too tight to drop in to place,
So my questions are.
How much can I safely heat the upright without risking softening the casting too much? It has just been powder coated so really don't want to use the torches on it.
Should I look at Dry Ice or Nitrogen to shrink the bearing more?
Dry Ice seems to be good at - 100deg or so but they recomend "disolving" the dry ice in 90% alcohol to ensure good "heat" transfer but I am concerned the alcohol will disolve the grease in the sealed bearing.
Should I just go ahead and "press" the bearing into place.
Help please.
Thanks in advance
Rick