bushing tolerance

[spears]

I am looking for a shaft and bushing combination. THe shaft will have a medium load, low rpm, at normal temp, and occasional use. THe bushing will not be lubricated. I would like to use brass or bronze.

I am curious about the surface roughness specs for the shaft and bearings as well as the dimsional tolerances for the shaft and bearing.

 

[unclesyd]

If your are going lubeless I think you ought to check out these people. They have about everything you want in lubeless bearing/bushing and plenty of design information. They were inexpensive at one time and worked with the design parameters.

http://www.oiles.com/p-design-guide.cfm