Originally Posted by
AvantGarden
1. Lower pulley (with a thick axis screw) is actually a Shimano ceramic bearing pulley and it is in mint condition inside. Is that Ok to have a Shimano pulley ?
2. How are ceramic bearings lubricated ? Is high quality bike grease good enough ?
If the pulley spins easily, it probably work fine. No special lube needed for ceramic bearings. For derailleur pulleys, I use heavy oil rather than grease. If the grease is stiff enough if might cause the chain to skip over the plastic teeth on the pulley and thus damage the pulley.