BEARING FOR DRY VACUUM PUMP

摘要

PROBLEM TO BE SOLVED: To provide a bearing for a dry vacuum pump capable of simultaneously satisfying lubricating performance and a durable service life. SOLUTION: This bearing for the dry vacuum pump is characterized by blending polytetrafluoroethylene as thickening agent with base oil composed of fluorine lubricating oil, adding a fluorine-containing compound having a specific functional group at a rate of 0.5 to 5 wt.%, and sealing fluorine grease having consistency of 265 to 310 so as to occupy 15 to 25 volume % of the bearing space volume.