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WQS - Non-Electrical Parts Reliability

Newbie

WQS - Non-Electrical Parts Reliability

Hi, I'm trying to learn the basics of the Windchill Quality Solutions software and I'm using the NPRD 2011 database.

I dont know what part number and data source refers. Lets name it, NRPD-805 and NRPD-24148 are both ball bearings for airborne environment with mil-spec qualities. They have different data sources.

How do I decide which one is more suitable? Which one reflects the bearing of the design in a better way? What data sources NRPD-106 or 25199-000 refers? There must be differences that I cannot see because operation speed, loading conditions are all important factors for bearing failure and I cannot see any specification on these.

Thanks in advance.