I must be pedalling all wrong as I have a pair of eggbeater C’s which must be 7years old and still on the original bearings and bushing!
There is a small amount of up/down play at the bushing end and slight pitting to the spindle at the same area but otherwise working perfectly.
Probably could remove the play with a service kit but will wait till they die and replace with a new set.
I shall put the longevity down to filling with grease from new and annual deep clean and regreasing.
Got a pair of Candy C’s as well that are newer but still fine after a couple of years.