if your shaft being preloaded does not heat up then all you have to do is preload the bearings just till there's no end play
if the shaft heats up and the bearings loosen with the thermal growth of the shaft then you will have to tighten the preload up so at that temperature there is no end play
if the shaft heats up and the bearings tighten with the thermal growth then you will have to loosen the preload so there is just no end play at that temperature |