what is 'preloading'?

mrushton

In simple engineering terms what is preloading in reference to headsets and bearing cups?Is it a case of just pressing down and then tightening or is there a bit more science than that. In terms of jet engines and other large powerful machinery I guess there is.

keef66

Squashing them down just the right amount? (I'm simple, but not an engineer)

Greenmam

try this

http://www.nmbtc.com/bearings/engineering/preload.html

keef66

Ooh, interesting stuff! With pictures too.

Makes sense now.