Re: 533 Rear axle broken thread ...age or materials?

Posted by Marty or Marston On 2018/7/29 2:31:01

It is hard to tell without examining the grain structure at the break. I would guess it experienced a low cycle fatigue failure caused by the threaded section flexing in relationship to the taper shaft. Possible cause a slight mismatch of the tapers. Could the key have been to high and prevented the two surfaces from forming a good contact on both surfaces?