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  1. Vibroman

    Broken Pulley Shaft Fracture Surface

    "Unfortunately I cant efford to spend money for this failure now" I guess you guys tangled up with this sentence. Sorry about that, maybe i misexplained my self.I don't afraid to spend money for analysis, just i think i don't need to for this case. We got more then 100 pullies in this plant with...
  2. Vibroman

    Broken Pulley Shaft Fracture Surface

    I was looking the type of the fatigue(i guess it is rotating bending fatigue), which point it started and how it progressed, approximately how many cycles it has run after crack started type of information. I know these are not easy questions to answer without analysis. I was looking just for...
  3. Vibroman

    Broken Tail Pulley Shaft

    ı moved it, Link Thanks,
  4. Vibroman

    Broken Pulley Shaft Fracture Surface

    Another picture from the moment shaft broken. http://files.engineering.com/getfile.aspx?folder=a3ddbd86-fe38-4022-b439-f1a13b05f0f6&file=20160424_161207.jpg
  5. Vibroman

    Broken Pulley Shaft Fracture Surface

    Hi everyone, What you think about this fracture surface. On a newly installed conveyor this pulley shaft is broken after 1,5 month of operation time. Slow speed application app. 120 rpm. I don't have much experience on failure analysis of machine shafts. Son can anyone please help me out on this...
  6. Vibroman

    Broken Tail Pulley Shaft

    Mike, This was a newly installed conveyor, it just run 1,5 months and then we have faced with this failure. To be honest i don't think it is a design issue, thats why i didn't go through with the calculations. But i will for sure now. Lukin I added another photo, it is broken just from the...
  7. Vibroman

    Broken Tail Pulley Shaft

    Just an additional information, this pulley also has a take up system, which means we are tightening the belt with moving the frame which is underneath the pulley bearing housing. The red frame in the attached picture. It is done simultaneously from both housings. I'm not sure if too much...
  8. Vibroman

    Broken Tail Pulley Shaft

    Couple of days ago we had a failure on one of our conveyor's tail pulley shaft. I added a picture of surface. The speed of the pulley is approximately 120 rpm. I did a little bit search and it looks like rotating bending fatique? Can anyone who is experienced on failure analysis help me on the...

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