About: http://webisa.webdatacommons.org/203145092

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	For this reason, carbon bearings are a good choice, because carbon has good self-lubricating properties.However, when abrasives are present in the pumped liquid, the shaft and bearings wear because carbon is soft.
http://www.w3.org/ns/prov#wasQuotedFrom	pumpsandsystems.com