See the shiny track on the axle, where the bearings were obviously wearing against it? Check all around that shiny track -- if there's a rough patch anywhere on it, the axle is pitted and needs to be replaced. Same thing on the inside of the cups where the bearings were tracking -- any pitting and the part is shot. Unsure if it's pitting or not? Run a ball point pen around the bearing track -- should be smooth; if you pick up on some roughness, part is pitted.