Assertion: bearing's friction | /r/HasProperty | reduced
Facets:
value: greatly
type: DEGREE
value: by enclosing the balls
type: MANNER
Source sentences:
text: An issue with ball and roller bearings is that the balls or rollers rub against each other causing additional friction which can be reduced by enclosing the balls or rollers within a cage.
text: If the block is put on top of a group of metal pipes and pulled again, the block can be moved more easily because the friction has been reduced and the pipes are in constant motion.
text: But if the two surfaces can roll over each other, the friction is greatly reduced.