Bearing sealing device and bearing sealing mechanism capable of

Details Bearing sealing device and bearing sealing mechanism capable of Bearing sealing device and bearing sealing mechanism capable of

1998-12-17

2000-08-01

Hannon, Thomas R.

Bearings

Rotary bearing

Antifriction bearing

277402, 277411, 384470, 384484, F16C 3372, F16C 3380

Patent

active

RE0368040

ABSTRACT:
There is provided a bearing sealing device capable of substantially completely preventing a leak of grease. A taper end portion of an axial extension of the bearing sealing device has an opposite surface and a rake face that forms a specified rake angle with the opposite surface. The opposite surface forms a narrow passage between the opposite surface and an outer peripheral surface of an inner ring. The narrow passage allows air to pass easily, but it allows grease to hardly pass therethrough. Further, the axial extension includes part of a core metal that extends axially and has its foremost end located axially inside an axial outermost end of the outer peripheral surface of the inner ring. Grease moving axially outwardly on the outer peripheral surface is moved along the rake face of the taper end portion and then guided along a cover portion of the bearing sealing device to an outer ring. The part of the core metal prevents the axial extension from being bent radially outwardly by a centrifugal force.

REFERENCES:
patent: 3396977 (1968-08-01), Iguchi
patent: 4505484 (1985-03-01), Ohkuma et al.
patent: 4533265 (1985-08-01), Woodbridge
patent: 4655617 (1987-04-01), Yasui et al.
patent: 4770548 (1988-09-01), Otto
patent: 4772138 (1988-09-01), Dreschmann et al.
patent: 4830518 (1989-05-01), Shiratani et al.
patent: 4854749 (1989-08-01), Kohigashi et al.

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