Assertion: ball bearing's ball | /r/MadeOf | either steel
Facets:
value: traditionally
type: OTHER
Source sentences:
text: The rings of high speed spindle bearings are typically made from corrosion-resistant steel, while the balls are made from either steel or ceramic.
text: The balls and rolling elements in a ball bearing are traditionally made of steel.
text: The rings of high speed spindle bearings are typically made from corrosion-resistant steel, while the balls are made from either steel or ceramic.