Assertion: ball bearing | /r/ObjectUse | used in machine
Facets:
value: widely
type: DEGREE
value: in order to minimize friction and power loss
type: PURPOSE
Source sentences:
text: Ball bearings are used widely in instruments and machines in order to minimize friction and power loss.
text: Ball bearings consist of balls (rolling elements), the inner ring, the outer ring, the cage (for keeping the balls in appropriate motion), and are used for many machines requiring rotary shafts, such as motors equipped in electric tools, etc.