B10 Life to Failure Rate
B10 Life to Failure Rate
(OP)
Is there a simple way to convert a bearing B10 life into a failure rate?
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RE: B10 Life to Failure Rate
it infers that 10 percent of the
bearing will fail at that load
and whatever number of cycles
that it is based on.
RE: B10 Life to Failure Rate
I have estimated a B10 life for a bearing based on my operating conditions. What I'm trying to do is determine how many failures/hour I can expect based on that B10 life. Assuming that bearings tend to fail according to a known distribution, there ought to be a simple way to convert B10 to failure rate in failures/hour. I just can't find it.
Thanks.
RE: B10 Life to Failure Rate
revolutions. You have to decide
how many revolutions per hour,
how many hours per day, and
how many days per year to calculate
the number of revolutions per
year. Then divide the 100 million
revolutions by the total revolutions
per year to get the amount of years.
RE: B10 Life to Failure Rate
Thanks.
RE: B10 Life to Failure Rate
Perhaps your bearing supplier could provide a statistical number that you could both live with, based on their experience.
Keep the wheels on the ground
Bob
showshine@aol.com
RE: B10 Life to Failure Rate
RE: B10 Life to Failure Rate
distribution slope curve. It is 1.0 for 0
to 50, 1.5 for 50 to 70, 2 for 70 to 80,
3.5 for 80 to 90, and 8 for 90 to 100.
I think the mean would be nearer to
8 times the b10 life.
Counting the area under the slope at
each 10 percent interval yields
.5,1.5,2.5,3.5,4.5,6.5,7,9,12,17.
SKF should be a good source for
an approximation but it does look
a little low to me.