Need to know the Rpm for AO Smith F48SJ8MB4

These people lost their records for this motor, Have the same problem with GE. They must throw away info on older Motors. You would think some of these big Companies would keep track, or they want you to buy a new motor?
It is usually printed on the Nameplate, and if dual voltage or speeds, it will list 2 RPM's.

http://www.aosmith.com/utility/search.aspx?q=F48SJ8MB4

It's replaceable with a 9646A3219 Coleman motor which is 850RPM. XREF Encyclopedia never throws away its old information.