Linear bearing with nested bearing tracks

A linear motion bearing assembly, comprising:

• a load bearing plate structure having at least a portion of open axial ball tracks formed therein, said open axial ball tracks comprised of at least two ball tracks, said ball tracks each including respective open load bearing portions and together having a single open common return portion and turnarounds interconnecting the respective load bearing portions and single common return portion, wherein
• a plurality of bearing balls are disposed in the ball tracks;
• a plurality of load bearing plates are axially positioned adjacent the load bearing plate structure for receiving load from the balls disposed in the load bearing portion of the ball tracks;
• and
• a bearing plate to housing intermediary load structure has a uniform substantially cylindrical inner surface in direct contact with said load bearing plates, said bearing plate to housing intermediary load structure being configured and dimensioned to maintain said plurality of load bearing plates in position and for receiving load directly from said load bearing plates.