Din 748 Pdf đŸ†•
It seems you are looking for the (technical specifications, dimensions, scope, etc.) of the standard DIN 748 .
To be precise: is a German (Deutsches Institut fĂ¼r Normung) standard titled "Shaft ends for electrical machines" (in German: Wellenenden fĂ¼r elektrische Maschinen ). din 748 pdf