Hi Wood,For my 11" motor I need to make a new DE cap and have found a couple of choices for bearings.
Standard practice for the modern Class H motors is to use high temperature seals, 2HRS, and high temp grease. And I just looked at a DE bearing we use and it is a 6208C3. Don't know about that double row approach. If the bearings are being pressed onto the splined insert instead of the motor shaft itself, best to put one each side of the load, like the old gear, except no need for rollers.
Oh yeah, just thought of this. We would often build the motor first time with the cheap bearings and test it, make sure everything worked, and then take it apart and install the expensive bearings.