Emory struck for 20 points, Loyd added 19 and Damyean Dotson had 13 as the Ducks (26-8) claimed their third Pac-12 title in school history and first since 2007.
Arsalan Kazemi contributed 12 points and 12 rebounds for Oregon.
Loyd's jumper with 12 minutes remaining turned back a Bruins rally and the Ducks cruised from there.
UCLA (25-9) got 14 points each from Shabazz Muhammad and Larry Drew II.
The Bruins fell short in a bid for their first Pac-12 title since 2008.