I agree with John. Oil impregnated bronze would be a better choice. Any kind of small oil grooves would also be a plus.
Machined a bunch of bronze punch press bearings over the years.

Don

1967 GMC 9500 Fire Ladder Truck
"The Flag Pole"
In the Stovebolt Gallery
1946 2-Ton grain truck
1946 3/4-ton pickup,
1953 1-ton pickup
1957 1-ton flatbed dually,
1954 Pontiac Straight Eight
Of all the things I've lost in my life, I miss my mind the most!