Not Ranked
There looks to be an issue where the flange was weld onto the shaft I would say the shaft is a high carbon steel and the flange is a lower grade.... it looks to have broken where the two have been welded together. I think maybe a metalurgic problem between the steels and the weld and the heat...maybe a little misalignment aswell... The shaft and the flange should be spun out of one piece of Billet...
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