to the crown of spheres and in particular with 32 will indicate the ring of balls or the single axially outer sphere while with 33 will indicate the ring of balls or the single axially inner sphere again for simplicity we often use the term u201c sphere u201d used by way of example in the present description and in the accompanying drawings instead of the more generic term u201c rolling body u201d and will also be using the same numerical references it will be understood always that in place of the spheres it may be used any other rolling i cover for example rollers tapered rollers needles etc in fig1 is shown the case of a symmetrical bearing i e with the same u201c pitch u201d for both crowns of rolling bodies what will be said in the following description is also applicable to the case of the asymmetrical bearing shown in fig2 where for simplicity we have used the same references as can be seen the only substantial difference between the two types of bearing is that while in the case of symmetrical bearing the radii r r u2032 of the circumferences of the centers of the rolling bodies of the corresponding crowns 32 33 assume.