I have searched th web for a cross-match for a condenser fan motor for a RHEEM model RAKA-036JAS 3.0 Ton A/c Unit To no avail.

R.S. R.Ph.

Try this page. The motor you need is listed there. Type in your model number upper left side.
American HVAC Parts

Or here for the motor

1/5 H.P 208/230 Volt Rheem, Ruud Condenser Fan Motor.(Special Mounting Holes): American HVAC Parts