Assertion: lubrication | /r/HasProperty | achieved by oil
Facets:
value: for profiled-rail guides
type: TRANSITIVE-OBJECT
value: for ball screws
type: PURPOSE
Source sentences:
text: Here, lubrication is achieved by oil held in an oil sump.
text: For profiled-rail guides and ball screws, lubrication can be achieved with either grease or oil.