Think of it like a rear end on a truck. If wheel is attached to a drive axle the bearing will be in the end of the axle housing. If the wheel is attached to a non drive axle then the wheel bearings will be housed in the wheel hub.
Ok makes sense now. My old worksman is gonna need some help sooner or later cause I hear the bearings at speed and they are 40 years old. I just hate to order them from worksman because there service dept sucks. I'd better order them soon so I have them by next summer. I ride here over ten months of the year so I hope they last that long. Tom Crisfield Md.