there are two different bearings in these pedal, I forget the code. I replaced mine in a set I have and after one winter I overhauled the sealed bearing, it was required for sure, not enough grease stock. Anyway I have 3 sets of these pedals and was lucky enough to score a set of spindles for one set which is missing all the chrome. The earliest of these pedals lost their dustcaps readily and I have one set with no dust caps. They later improved the design and those later pedals tend to retain the dustcaps, I think it was lip on the bolt that they added but I can't recall since i haven't taken them apart in a while. ANd yes best pedals made in the 1980s.
1 Super Record bike, 1 Nuovo Record bike, 1 Pista, 1 Road, 1 Cyclocross/Allrounder, 1 MTB, 1 Touring, 1 Fixed gear