Patent ID: 6946429

Claim:
A bearing for an electronically controlled throttle motor in an automobile comprising said bearing filled with a grease composition with a kinetic viscosity between 40 and 150 mm 2 /sec at 40° C. containing (a) a straight-chain perfluoropolyether oil with a kinetic viscosity less than 25 mm 2 /sec at 40° C. expressed by the formula RfO(CF 2 O) p (C 2 F 4 O) q (C 3 F 6 O) r Rf wherein Rf is a perfluoro lower alkyl group, and p, q and r are integers whose total is between 25 and 45), (b) a base oil containing a straight-chain perfluoropolyether oil with a kinetic viscosity greater than 250 mm 2 /sec at 40° C. expressed by the formula RfO(CF 2 O) p (C 2 F 4 O) q (C 3 F 6 O) r Rf wherein Rf is a perfluoro lower alkyl group, and p, q and r are integers whose total is between 80 and 200 and (c) a polytetrafluoroethylene filler.