Actually no, or at least I don't think so.
What I envisage is say the CD player just gliding along on the bearings until it slides off. The bearings do not move anywhere, just rotate in the bottom housing allowing whatever is on top to move easily and readily!
It is now just a variation on what we use to move heavy equipment around in factories.
I am a more confused as to how they can work without a top piece?
What I envisage is say the CD player just gliding along on the bearings until it slides off. The bearings do not move anywhere, just rotate in the bottom housing allowing whatever is on top to move easily and readily!
It is now just a variation on what we use to move heavy equipment around in factories.
I am a more confused as to how they can work without a top piece?