Assertion: ball's position | /r/HasProperty | stabilized by a sliding of a convex surface
Facets:
value: with a cage
type: OTHER
value: on each other
type: LOCATION
value: in a matched concave surface
type: OTHER
Source sentences:
text: With a cage the tangential position is stabilized by a sliding of a convex surface in a matched concave surface, which avoids dents in the balls and has lower friction.
text: Without cages the tangential position is stabilized by sliding of two convex surfaces on each other.