Originally Posted by Hamltnblue
Tolerances are not clearances, but lower tolerances means less clearance variation?
I didn't think I would need to spell this out
Let's say you're shooting for .002" bearing clearance. Maybe 40 years ago that meant you were typically between .0028 and .0012. Now, it means you're between .0021 and .0019.
Originally Posted by CR94
Originally Posted by Jimmy_Russells
... Tolerances are not clearances. Lower tolerances means the amount of clearance variation is far lower.
True. If tolerances are in fact tighter, that would mean maximum clearances don't have to be as large to avoid minimum clearances being too tight. Which would mean you don't need oil to be as thick to support loads in the large clearances.
Tolerances are not clearances, but lower tolerances means less clearance variation?
I didn't think I would need to spell this out
Let's say you're shooting for .002" bearing clearance. Maybe 40 years ago that meant you were typically between .0028 and .0012. Now, it means you're between .0021 and .0019.
Originally Posted by CR94
Originally Posted by Jimmy_Russells
... Tolerances are not clearances. Lower tolerances means the amount of clearance variation is far lower.
True. If tolerances are in fact tighter, that would mean maximum clearances don't have to be as large to avoid minimum clearances being too tight. Which would mean you don't need oil to be as thick to support loads in the large clearances.