Opinion question, choice of bearing brand

[diskullman]

Ok, you've had some bad luck and bad health, and your doctor tells you that you will need an artificial heart. The manufacturer of the artificial heart tells you that you will have the choice of which brand of ball bearing that will be installed in your artificial heart. Let's say that it uses a 6203 bearing. The mfgr of the artificial heart explains that the bearing is the "heart" of the artificial heart, and much like a real heart, it will eventually fail. Which brand do you specify?

My vote would be for NTN.

Russell Giuliano

 

[FreddyMusic]

I take SKF, if i am able to afford.

FreddyMusic

 

[FreddyMusic]

Nope, I am wrong. I design and manufacture one.

Then I only wish, rest parts in my body can survive as long as my artificial heart.

FreddyMusic

 

[diamondjim]

precisionplasticballs
just so I do not get stopped
at the airports.

 

[xnicke]

SKF

 

[ischgl99]

Barden

 

[daveboy]

I would find out who had done this type of work before, who had the experience of success and failures and then probably still go with SKF

 

[Skogsgurra]

The way SKF handles critical applications has convinced me that they should deliver the bearings for this application.

Gunnar Englund

http://www.gke.org

 

[JJPellin]

We have had very good luck with SKF and MRC. I would go with one of those. But my mind, the most important thing is to be consistent. Pick one manufacturer and stick with them. At that point, having a good supplier (distributer) is important. You need a supplier who will keep enough stock on hand to be able to send you the bearings you need, when you need them.

 

[Tmoose]

Even after picking the "best" bearings I'd run 100% acceptance tests using criteria of vibration (with > 2000 Hz fmax spectra and overall acceleration) and temperature measurements. Probably half the "bad" bearings I've known were murdered at assembly or even in shipping.

 

[Mendit]

You never said what your parameters are ?
Hi Speed
Hi Humidity
Hi Temperatures
Hi Vibration
If your parameters are standard most manufactures produce reliable product, that will operate OK. As Tmoose states most bearings are murdered at assembly. Poor install procedures, poor greaseing procedures, poor fit and tolerances, even standard to loctite the bearing to the shaft and housing. All are poor practices when the envelope of operation is pushed to the limit.

 

[JeanMicheling]

I think the best company would be the best aftersale service. Skf has a good expertise but its expensive. NSK is less reliable but cheaper. Since it's about your heart I'd choose SKF.

 

[svanels]

I have used SKF, Koyo, MRC, FAG on different equipment. The bearing is not "that" important. The information supplied by the manufacturer, is what counts. SKF ranks high in my opinion, and also koyo have some excellent info in pdf format about bearing failure causes.

In case of doubt I have found:

http://www.ahrinternational.com/ahr_bearing_part_number_systems.shtml

if I have to look for alternatives.

62306 from SKF, Koyo or Fag has no difference.

But if the guy installing use:
1) a sledge hammer
2) a pipe wrench
3) wash the bearing in solvent to get rid of that old, dirty, blue sfuff the manufacturer put on the bearing before it got wrapped in paper....

When you feel that one brand is better then another, start looking who is doing the job.