| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealing device for rolling bearing having a contact seal capable of removing the air generated in integration and keeping the lubricity of grease for a longer period than a noncontact seal after integration. SOLUTION: This sealing device for rolling bearing comprises contact seals 35 and 36 installed to both sides of a ball 33 as seal members. The respective seal lips 35a and 36a of the contact seals 35 and 36 are turned to a pulley side (the left in the drawing), and when air pressure is applied from a vane pump side, the inside seal lip 35a is distorted to the ball 33 side, and the outside seal lip 36a is distorted to the pulley side opposite to the ball 33. Thus, the air B collected on the vane pump side is passed in both sides of the ball 33 through the inside seal lip 35a and released to the pulley side through the outside seal lip 36a. COPYRIGHT: (C)2004,JPO
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