I never paid too much attention to this until I purchased my Husky 555, I noticed both Stihl and Husky are using plastic caged crank bearings on their chainsaws. I was wondering why this is? Husky seems to have a lot of crank bearing failures on the 562XP models with the rev boost feature on the clutch side. Also a lot I have seen on stihl. What is happening is the operators use a dull chain, transfer lots of excess heat into the crank shaft (from the clutch) and it basically destroys / melts the bearing cage.
If they used metal caged bearings, yes you can still turn them blue and damage them, but it would sure take a lot of effort.
Curious, there must be some reason they are using these.
If they used metal caged bearings, yes you can still turn them blue and damage them, but it would sure take a lot of effort.
Curious, there must be some reason they are using these.