Patent ID: 8333665

Claim:
A lubricating system comprising a first foam lubricant containing a lubricating component in a resin thereof which foams, hardens and becomes porous; and a second lubricant for initial lubrication wherein said second lubricant is present together with said first foam lubricant in a portion to be lubricated, wherein in said first foam lubricant, said resin which foams, hardens and becomes porous is a rubber-like elastic substance; and said lubricating component contained in said resin has an exuding property displayed by deformation of said-rubber like elastic substance, wherein said second lubricant for initial lubrication consists of grease having a worked penetration not less than 300 or having a degree of oil separation not less than 0.7 wt % when said grease is left 24 hours at 70° C. or consists of lubricating oil having a kinematic viscosity not less than 50 mm 2 /second and 40° C.; and in initial lubrication of said lubricating system, said second lubricant for initial lubrication is essentially present at a sliding portion of said portion to be lubricated, wherein a open cell ratio of said resin which foams, hardens, and becomes porous is not less than 50%.