for use in automobile multistage automatic transmissions
Cage & Roller
Race with Inner Diameter Lip
When a planetary gear inclines due to moment load, the roller also rotates with an inclination, which causes friction loss due to the skew force-induced slide between the washer and planetary gear, placed at either end of the gear.
To reduce this sliding friction, NSK developed thin thrust needle roller bearings that can easily replace other washers of the same product dimensions.