I just recently replaced my blower motor on my H2. I had a Dayton 4c443 originally which i completely disassembled to attempt repair first. it was so gunked up with creosote i just said forget it and bought a new one for $65. The replacement i used was the Dayton 1TDP3.
I did not notice oil ports anywhere when i disassembled the old one, or anywhere on the new one. The manual for the new one also does not mention any need to oil nor did the grainger catalog page. From what i have read if it has oil ports it should be oiled, if not then it isn't. there is sometimes a plug near the bottom too where oil can be dripped in and i have read of people drilling holes to oil when their blower seemed to be giving out to gain a couple more years out of it.
The dayton spec sheets here:
http://www.electricmotorwarehouse.com/dayton_blower.htmare the only ones that even talk about lubrication of some of these dayton blowers and all of them seem to boast "Permanently Lubricated Ball-Bearings."
So if you have a similar blower and you discover if and where these are to be oiled i would be interested to know!
sawyer, what make and model is your blower? I did not notice any oil ports on mine where you have stated, so must be different, or i must just be blind : )