I have a 60" Mesta Grinder. 2 of the bearings on the drawing are odd. Can anyone help me with frequencies for these bearings:

Amercan Roller Bearing HCS-327
Consolidated XLS-12

Thanks

Here is the web address for American Roller Bearing. http://www.amroll.com/ and their phone number 412-781-1190

Here is the web page for Considated Bearings. http://www.consbrgs.com/ and their phone number 973-539-8300