Quote:

You can safely warm them to about 400*
then just drop them on and let them cool.



400 is too high , We have an SKF bearing heater at work, it's an induction style , its set at 250 degrees.

Warming to 200 degrees in an oven will be fine , it's a press fit so putting oil on to aid the fit is a waste of time, and oil, the bearing will just scrape the oil off and trap it between the inner race of the bearing and the point that it seats against on the axle leaving the bearing not fully seated.