Originally Posted by
jeffreythree
Lube failure, probably from to much and maybe not the right kind of grease. It leads to friction, which leads to heat, which leads to blue balls. I do it on purpose on small steel parts (especially screw heads) often with fire bluing.
What*******orry but never heard about too much lube (and lithium grease is a decade old acceptable bike bearing grease for most applications) being a cause of heat. Seriously, after 45 years of doing this stuff too much grease in a hub bearing... no. Andy