Question on S/S Galling
Question on S/S Galling
(OP)
i've been scouring the internet but have not found info on the exact scenario i am dealing with. I have a drum which rides on a central shaft. The hubs that ride on the shaft move axially along the shaft up to .5" due to expansion of the drum, so there is relative motion between the hubs and the shaft. If the hubs are 304, would i have a galling issue if the shaft were to be carbon, such as 1045?
Really appreciate any responses.
Really appreciate any responses.





RE: Question on S/S Galling
The surfaces should be as smooth as practical, and any lubrication will help greatly.
If you really need to keep them free moving I would suggest putting bushings of Nitronic 50 or 60 into the 304 hubs.
Heep the 1045 as hard as is practical.
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P.E. Metallurgy, Plymouth Tube
RE: Question on S/S Galling
RE: Question on S/S Galling
If these are small make the hubs from Nitronic 50 or 60. These stainless grades have good corrosion resistance and excellent galling resistance.
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P.E. Metallurgy, Plymouth Tube
RE: Question on S/S Galling
Thanks for you response.
RE: Question on S/S Galling
RE: Question on S/S Galling
To be extra safe you should make sure that the finishing marks are both longitudinal.
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P.E. Metallurgy, Plymouth Tube
RE: Question on S/S Galling
RE: Question on S/S Galling
If this is a sliding fit that moves regularly, lubrication will greatly help. The low clamping" pressures of a sliding fit will reduce the tendency to gall.