Bruce, On a bearing set: I believe the preload will be correct without shims. I have rarely seen preload changed/set with shims. The outer rings are usually together between the rollers/balls.
On a shaft with bearings on each end: assemble the components and measure the free play calculate shim requirements for removing/correcting end play HTH Stuart On Wed, Nov 2, 2011 at 11:02 AM, Bruce Klawiter <bmkl...@yahoo.com> wrote: > I bought new bearings for the ball screws on my mill, SKF 7204 BECBP. > > http://www.skf.com/skf/productcatalogue/Forwarder?action=PPP&lang=en&imperial=false&windowName=null&perfid=123002&prodid=1230020204 > > I have read conflicting information on how to install them. > It appears the best way would be installing them back to back, but I have > read the inner rings should be clamped tight and also read the outer rings > should be clamped tight when there back to back. > > I am not sure I understand the proload either and can't decipher what it > is form the SKF website. > > This is what I think I need to do, find what the preload is (weight) and > measure the defection of the outer race when this weight is placed on the > bearing. > > Take this measurement X 2 and shim between the the races of the two > bearings and clamp tight the inner rings and I will have the correct > preload. > > Do I have this right. > How do I find the preload > > Your help is greatly appreciated, > Bruce > > > ------------------------------------------------------------------------------ > RSA® Conference 2012 > Save $700 by Nov 18 > Register now! > http://p.sf.net/sfu/rsa-sfdev2dev1 > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- dos centavos ------------------------------------------------------------------------------ RSA® Conference 2012 Save $700 by Nov 18 Register now! http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
