To reduce stirring resistance of lubricating oil accompanying bearing rotation by improving through-flow of lubricating oil supplied to a thrust rolling bearing from an inner diameter side of a retainer to an outer diameter side.
This bearing is provided with oil grooves 3b connecting between each pocket 3a in a rotation direction of a rotor, namely in a direction opposing to a rotary direction of a retainer 3 with inclining from the inner diameter side to the outer diameter side on both face and back surface sides of an annular retainer 3. Consequently, through-flow of supplied lubricating oil from the inner diameter side of the retainer to the outer diameter side is improved to reduce stirring resistance of lubricating oil accompanying bearing rotation.
Torii Kazuhisa
Takayoshi Tagawa
Higashio Masahiro