[Scorcher000]

I think you could only tell if you actually try to grab the shaft and move it by hand for the axle. A wheel bearing you should be able to turn the wheel in a circle and if you turn right and hear it, it is the left bearing going and that goes the same way for the other side too. Turn left and if you hear it, it is the right side.

But, if it's the axles bearing, like I said just grab it and see if it moves.