Any ideas why a skf 22316 bearing would collaspe within 45 minutes of assembly

Was it installed with a taperlock adaptor?
What was running speed?

D

No lube or improper assembly would be my guesses.

Like Dave said, the speed will give a hint. High speed means quicker failure.

if a tapered bore, then I would suspect improper clearance, either too much or too little can cause a quick failure. If straight bore, shaft could be oversize causing reduction in clearance and quick failure.

No lube, or not enough, as Danny already mentioned

Another possibility, if this was a floating bearing and was not positioned to allow for expansion, then axial forces could destroy a bearing fairly quickly.

And of course, someone could have dropped the bearing causing brinneling bad enough to cause a quick failure.

Is the bearing completely destroyed or do you have pictures you can show?

Hey Mike,

Good to see you around. Seems like you have been missing for a while. Did you make a change?

thanks guys lets go get them

Hi Danny,
yes, got laid off from FAG last April and spent most of the summer having fun around the house and not as much time on the forums. Started a new job a couple weeks ago as a Reliability Engineer at a company that operates wastewater plants and getting back into the swing of things. I'm enjoying the hands on work again and I think my wife is happy to get me out of the house!

I am looking forward to participating more.

Mike

Good to hear you found something and to have you back.

Don't think your wife is happy just to get you out of the house. She probably likes the paycheck, too.

Thanks Danny, she certainly does like the paycheck and I like it as well, now I can start looking at those toys, I mean tools, I need for the house

That part number denotes a spherical roller bearing on a tapered sleeve. As mentioned previously, some of the reasons for premature failure are:
- improper mounting, clearance not set properly
- poor (insufficient, improper, or contaminated) lube
- improper warmup
We need pictures of the failure.

Kestas,

Can you give us a brief description of a proper warm-up procedure?

That depends on the application. A warmup procedure would need to be developed jointly by the user and the SKF field engineer and applications engineer.

I analyzed one such bearing that didn't follow proper warmup procedures. This was for a paper mill where the rolls were used for drying paper. The steam ran through the shaft, and because of the lag in heat flow, the shaft grew much quicker than the inner ring. Since it's human nature to try to speed things up during production, warmup was too fast for this application, and the shaft grew faster than the inner ring, resulting in an overstressed inner ring. I found axial-radial fatigue cracks on the IR running surface that progressed into spalls during service.

Thanks for the explanation.