WASHER ARRANGEMENT, IN PARTICULAR FOR PLANET WHEELS IN A PLANET CARRIER

摘要

A thrust washer assembly for a planetary gear mechanism including a pair of thrust washers on each side of each planet gear of the mechanism, the planet gear being mounted on planet pinion shafts in a carrier by means of uncaged needle bearings, the washers directly adjacent the planet pinions having angularly spaced ports located at a position radially outward from the needle bearings and the washers between the ported washers and the carrier having sector-shaped recesses at diametrically opposite positions whereby the recesses and the ports register to establish a pumping action that circulates lubricating oil through the needle bearings.