About: http://webisa.webdatacommons.org/207033247

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Noncontact bearings, where there is no metal-to-metal contact except when the bearing is at rest, are an improvement over balls or rollers, however, they are costly and impractical for most mechanical applications.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com