Seal Arrangement For a Rolling Bearing

摘要

In a contact type seal arrangement for a rolling bearing, it is aimed to reduce torque and improve sealability by improving the lip structure of each seal member. Each seal member 11 has a branch portion 15 at substantially the same height as the land 3 of the inner ring. A main lip 16 is defined by its portion extending radially inwardly from the branch portion 15 . The tip of the main lip 16 is brought into contact with the outer groove wall 21 of the seal groove 4 to define a contact seal 25 . An auxiliary lip 17 is defined by a portion extending axially inwardly from the branch portion 15 . A labyrinth seal 19 is defined between the tip of the auxiliary lip 17 and the inner groove wall 18 of the seal groove 4.