bearing software

[upm]

Gents,
Does any body knows a site or free software i can use to calculate the radial/axial loads on the bearings? do you know any good bearing site for technical info.
upm

 

[EnglishMuffin]

If your system is statically determinate (which in many cases means only two bearings) then you really shouldn't need software to find the loads on the bearings - this mainly involves things such as gear and pulley loads and simple moment reaction calculations etc. But if your system is statically indeterminate, which means that the bearing deflections influence the loads themselves, then there may be no simple software that will help, because you may need to incorporate detailed non-linear stiffness characteristics of the bearings. Each bearing can have up to three stiffnesses - axial, radial and tilt. Many bearing analysis programs also assume a rigid shaft - which may or may not matter. There are sites such as rbts.com and xlrotor.com that have free downloadable evaluation versions of their rotor dynamics software, which may help you. I have obtained free versions of the SPICAS bearing software from FAG in the past, but this depends on how friendly you are with the FAG rep. SKF also have software which you can obtain free sometimes. If you develop a good relationship with the rep of your bearing supplier(s), they will often do an analysis for you for free. If you have the bucks, of course, you can purchase very powerful software such as ABODE or COBRA. A simple FEA program may be all you need if it's available.

 

[upm]

Englishmuffin,
Thanks alot for the replay. i am looking for this softawre to evalute the bearing load on our fin fan reduction gear box and verify the vendor calcas whcih uses FAG software. I am in belive that the existing bearings are undersized and need to be modefied for excessive shock loads and need to re-confirm the radial.axial loads.Our bering rep. are sales only and not that helpfull.
thanks for the advice
upm

 

[2126]

try these keywords in the search engine (yahoo or google):

kingsbury,inc
waukesha bearing
bently bearing
SKF

 

[Hippo41]

Demand that your FAG rep gets you in touch with their engineering department!

Lester Milton
Telford, Shropshire, UK

 

[diamondjim]

I would think AFBMA
would have software
available or could
recommend some good sources.
Franklin Institute designed
and tested for NASA and also
may be a good source.
It will probably cost nearly
3000 us dollars and need
someone to walk you thru the
many options.
I would submit your input data
to several bearing manufacturers
for calculations. some may be
reluctant unless you are talking
about 50 bearings or more. Most
companies do this for free and
will often give you the calculation
data in detailed form if you
require it.