| 摘要 |
<p>PURPOSE: To especially strongly constitute an outer raceway at the inside of an outer race and easily connect an oil hole with a supply of lubricating oil or a discharge passage by forming a radial outside end of the oil hole between a flange part of the outer race and an annular flange of a cover and opening the radial outside end at a connection passage extending in an almost radial direction. CONSTITUTION: An oil hole 20 is provided between an outside end face 16 of a flange part 11 and a cylindrical surface part 24 of an outer race 5, the radial outside end is opened at a connection passage 32 extending in an almost radial direction and the connection passage 32 is provided between the flange part 11 of the outer race 5 and an annular flange 17 of a cover 18. In the connection passage 32, an upper end leads to an axial hole 36 passing through the flange part 11. In the axial hole 36, an inside end is connected with an oil supply path 37 of a housing 3. Further, at a circumferential lower portion of the outer race 5, an oil discharge opening 43 from a bearing chamber 19 to a radial inside end of the outside end face 16 exists and is formed by an axial groove 38 between an inner peripheral surface 26 of a sleeve part 25 and a cylindrical surface part 24 of a ring part.</p> |
