The near miss thread...

[7610 super q]

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I should maybe pass on this then.

Yes, what kind of duck egg paints his Ford John Deere green.......

 

[Landy Nick]

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Is the shaft waisted where the break was for,say for a circlip or seal.
The outer part of shaft is old metal and the inner is clean metal where sheared off.

I would definite have the others out, even just to looks at.

 

[Kevtherev]

No circlip groove nothing.
All the others will be checked now

 

[Baker9]

It broke because of an inadequate fillet radius at the base of the machined plate (1st picture) used to see it a lot on race cranks that had been machined badly/cheaply. Needs to be a decent radius and ideally polished. Having the end of that central drilling ending where it does doesnt help either!!

I saw the same fault on the main shaft belonging to a 5Mw Siemens wind Turbine, I would have thought the Germans had enough engineering knowledge to avoid a basic mistake like that.

 

[Speedstar]

If it is a manufacturing defect, the manufacturer has a duty to investigate, surely, and recall any machines they feel might be at risk? Car makers do it all the time.

Only problem here will be the age of the machine it is a 2009 , what design life would it have ?, would they Class it as a wearing part that should be changed after so many hours

 

[Speedstar]

No circlip groove nothing.
All the others will be checked now

If they are not to dear just replace them all or get some made out of better material

 

[Forever Fendt]

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To be fair the shaft does not look that big diameter wise considering what it is doing is it 40mm ?

 

[Zebbedee]

Nine year old machine? hardly a manufacturing fault really but could probably be made better as regards machining etc but realistically as mentioned earlier crack testing yearly or depending on hours use etc would be the most reliable option and replace every eight and a half years or so,,,,,,,

 

[Kevtherev]

I was merely pointing out so that others may check theirs.
@Rusty#1 has same machine

 

[devonbrion1998]

Made me give my old bench a good check over in that area
Looks a lot stronger than your broken one to be honest, Thanks for the heads up

 

[Bury the Trash]

Made me give my old bench a good check over in that area
Looks a lot stronger than your broken one to be honest, Thanks for the heads up

Your sawbench would be for cutting bigger stuff though .