Thanks again for all of the replies. I think "bushings" might be misleading here. The bucket and pins will rotate together so there is not a rotating element between my parts.
The bushing in the excavator is greasable. I'll look at the suggestions here.
Thanks for the reply. My question was more focused on pin wear over time. The cost difference is as much as a factor of 3 so I feel that it is worth a bit of research.
I am designing a few excavator buckets for work. I'm trying to decide on the best material for the pins and the bushings. I am looking at ETD-150, however the cost is pretty high. These are for mini excavators, around 5 metric ton. Any suggestions are appreciated! The pins will be rigidly...