WHEEL BEARING SEALING DEVICE

WIPO Patent Application WO/2013/154170

A1

[Aim] Provided is a wheel bearing sealing device that sets the optimum specification based on the tension force of a radial lip in a pack seal and improves the sealing performance in low-temperature environments and muddy water environments. [Solution] The present invention comprises a seal plate (12) constituted by a seal member (15) bonded to a cored bar (14) through adhesion by vulcanization, and a slinger (13) that includes a cylindrical portion (13a) and a vertical plate portion (13b) extending outward in the radial direction. The seal member (15) includes a side lip (15b) which extends outward at an angle in the radial direction and slides against the vertical plate portion (13b) via axial-direction interference, and a radial lip that is formed in a bifurcated shape on an inner diameter side of the side lip (15b) and is constituted by a grease lip (15c) and a dust lip (15d) slide-contacting the cylindrical portion (13a) via radial-direction interference. A garter spring (17) is mounted on the dust lip (15d), and the tension force is set to be 50% or higher of the entire tension force while the tension force in a state where there is no garter spring (17) is set to be at least 3N.

JP2004019722	ROLLER BEARING
WO/2013/111638	BEARING WITH RFID FUNCTION AND BEARING SEAL
JP2019215033	ROLLING BEARING

SEKI MAKOTO (JP)
BABA TOMOKO (JP)

PCT/JP2013/060989

October 17, 2013

April 11, 2013

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NTN TOYO BEARING CO LTD (JP)
SEKI MAKOTO (JP)
BABA TOMOKO (JP)

F16C33/78; B60B35/18; F16C19/38; F16C41/00; F16J15/3212; F16J15/3232; F16J15/3252; F16J15/3284

JP2005299685A	2005-10-27
JP2006161917A	2006-06-22
JP2010190323A	2010-09-02

See also references of EP 2837839A4

KOSHIKAWA, TAKAO (JP)
Takao Koshikawa (JP)

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