20-02-2019, 09:33 PM
Normally if run in clean conditons, wear of rolling bearings is neglegible. Life is determined by spalling fatigue failure. I have asked before but as far as I know tha latter is never the problem with Seven mains. Wear seems more a corrosion problem; cars in regular hot running give good service and I am surprised with modern oils it still seen as a problem. Just an additonal .001 clearance is apparent whereas in a plain bearing car never notice. I dunno if the rear wears more or if the flywheel just accentuates what wear there is. One argument for a.c preload is that it is decades before it disappears, assuming the lip does not break off in the meantime.
More rollers would reduce fatigue. As the tracks wear most where load is greates presumably would also reduce other wear. The commencing clearance has huge influence.
Any building up of the shaft has to be done carefully as most process' accelerate fatigue, esp heating.
More rollers would reduce fatigue. As the tracks wear most where load is greates presumably would also reduce other wear. The commencing clearance has huge influence.
Any building up of the shaft has to be done carefully as most process' accelerate fatigue, esp heating.