What is screw/nut galling and how can it be avoided?
Galling occurs when two like metals rub against each other. As the metals heat up from friction, the molecules of each bind together, eventually causing failure as the surfaces weld together. The higher the speed and the higher the pressure, the more likely this is to occur. Galling can be avoided by good lubrication and by using bronze or plastic nuts in place of steel nuts. Steel nuts are appropriate for low duty cycles or when good lubrication can be supplied, otherwise, steel nuts running on steel screws should be avoided. For high duty cycles and limited lubrication, plastic and bronze nuts should be specified.
Related Questions
- INPULL NUT requires a hole larger in diameter than the screw to be used. Is there any prpblem concerning the alignment of the screw after the screw is tightened?
- INPULL NUT requires a hole larger in diameter than the screw to be used. Is there any problem concerning the alignment of the screw after the screw is tightened?
- What is screw/nut galling and how can it be avoided?
