Ellerbe sat out for the second consecutive day with ankle and back injuries. Pitta was limited Thursday with a thigh injury.
The Ravens listed 17 injured players who had full participation. Defensive tackle Haloti Ngata had a full practice after being limited Thursday with a knee injury.
For the 49ers, linebacker Ahmad Brooks (shoulder) practiced for the first time this week. Two other starters, linebacker Aldon Smith and cornerback Tarell Brown, were limited again with shoulder injuries.
The 49ers leave for New Orleans on Sunday, and the Ravens depart on Monday afternoon.