Patent ID: 8916509

Claim:
A bearing lubricant, comprising a compound represented by the following general formula (1): C f H 2f+1 —R 1 a —O—(C═O)—O—R 2 b —C g H 2g+1 (1) wherein O represents an oxygen atom; C represents a carbon atom; H represents a hydrogen atom; R 1 and R 2 independently represent a C2-C48 oxaalkylene group having 1 to 6 oxygen atoms; a and b independently represent an integer of 0 or 1 and satisfy a+b≧1; f represents an integer of 8 to 12; and g represents an integer of 1 to 12, wherein the bearing lubricant is a fluid bearing lubricant or an impregnated bearing lubricant, and wherein the bearing lubricant has a volume resistivity of not more than 1×10 12 Ω·cm, a kinetic viscosity at 40° C. of 6 mm 2 /s to 13 mm 2 /s, a viscosity index of not less than 80, and a pour point of not higher than −20° C.