| 摘要 |
PROBLEM TO BE SOLVED: To reduce torque and increase sealing by improving the lip structure of a seal member in the contact type seal structure of a rolling bearing. SOLUTION: A branch part 15 is formed on the seal member 11 near the height of an inner ring land 3. A main lip 16 is formed of the portion of the seal member projected from the branch part 15 in an inner diameter direction, and the tip part of the main lip 16 is brought into contact with the outer groove wall 21 of a seal groove 4 to form a contact seal 25. An auxiliary lip 17 is formed of the portion of the seal member projected from the branch part 15 in an axial inner direction. A labyrinth seal 19 is formed between the tip part of the auxiliary lip 17 and the inner groove wall 18 of the seal groove 4. COPYRIGHT: (C)2006,JPO&NCIPI
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