Shaft material for bronze bushing
Shaft material for bronze bushing
(OP)
I am looking for a source or recommendations for shaft materials to use with bronze (copper/tin - low graphite) bushing that is oiled impregnated in a low speed light load application? Currently using TGP 303 Stainless and experiencing problems.





RE: Shaft material for bronze bushing
What exactly is your problem with the 303 SS, and what is your specific application? The answer to these questions can help to provide a proper recommendation for shaft material.
RE: Shaft material for bronze bushing
The application is an idler roller shaft approx. 13.19" long and roll diameter of .813. The shaft Diameter is .3145. There are bronze bushings on both ends of the shaft held down by a small compression spring (2.5 in/lb.) The surface speed of the roller is 15 IPS.
The idler roller is used in combination with a driven roller to transport single sheets of paper through a device that scans and images the document. Typically in an office environment.
RE: Shaft material for bronze bushing
RE: Shaft material for bronze bushing
RE: Shaft material for bronze bushing
The ends can be ground to a nice finish and should run well.
= = = = = = = = = = = = = = = = = = = =
Corrosion never sleeps, but it can be managed.
http://www.trenttube.com/Trent/tech_form.htm
RE: Shaft material for bronze bushing
The bearings need good alignment and both the journals need to be concentric to prevent edge-loading, which can turn a light load into a heavy load.
Journals need to be round and smooth (~10 microinch), and maybe even directionally polished to get the best results.
Some fancy assembly lube can perform absolute miracles getting thru the break-in period.