| 摘要 |
PURPOSE:To prevent the contact with a retainer by suppressing the deformation of an elastic body seal. CONSTITUTION:Between the orbital surface 2a of an outer race 2 and the orbital surface 4a of an inner race 4, rolling bodies 8 which are held by a retainer 6 are arranged. An installation groove 2c is formed on the outside diameter at both the ends of the orbital surface 2a, and a seal groove 4c is formed at the outside diameter at both the ends of the orbital surface 4a. An elastic body seal 11 which is constituted so that the inside diameter Rl of a core metal 18 is formed smaller than the outside diameter R2 of the inner race 4 is fitted with the installation groove 2c, and the lip part 11a of the elastic body seal 11 is put into slide contact with the seal groove 4c. |
