I recently replaced these, and found the old & new parts had different dimensions.
wasnt totally unready for this, alerted by this forum
my question relates to the ID of the rollers, and how they fit upon the hardened steel shaft they ride on
ID OD WIDTH (inches)
NEW .488 .866 .492
OLD .501 .900 .484
there was about .010 of slop where the ID ran on the shaft with the old one, these are quite old, and this did not seem right, but the new ones were an interference fit by about .002"
this means they did not rotate upon the steel pin, so i honed them with a fine chainsaw file until they would just rotate.
is this correct?
issue being when i installed the unit, I observed that one roller does rotate upon the pin, but the other i must not have honed enough, as it still appeared to be bound upon the shaft in normal operation.
if advised I will take it apart again and hone the roller a little more