Axle Bearing Replacement ?'s

Well today i was just finishing up my complete rear brake overhaul, including removing and painting the backing plates. the problem is that when i put the passenger side axle back in, it doesnt spin freely when there is pressure applied to the axle. It seems like the bearing is hanging up on something and makes a pretty loud knocking sound. So i figured its time to replace the bearing. I dont have a press, so is this something that i should just have a shop do for me?

Anything else that this could be other than a bearing?


Thanks