Watching a repeat of a Fred Dibnah tour with his 1912 traction engine I was surprised to see when he had a problem with a front wheel that it ran on a greased axle with a phosphor bronze hub bush. Then it ocurred to me that I'd never seen a ball or roller bearing used anywhere on a steam engine or the running gear in spite of ball bearings being used on bicycle hubs since 1869.
(I also don't recall noticing any being used on steam trains either).
Research on the web hasn't produced any specific references other than industry was slow to change, fitting ball bearings required more machining and were more expensive than bushes.
Incidentally, Fred's engine made a lot of money at auction in 2010.

https://youtu.be/mozMg5jBUqo