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Patent Searching and Data


Title:
ROLLING BEARING UNIT FOR WHEEL SUPPORT
Document Type and Number:
WIPO Patent Application WO/2003/071148
Kind Code:
A1
Abstract:
Of the two end openings of a space in which balls (14, 14) are received, the inner end opening is closed by a cap (17a). Further, the outer end opening is closed by a sealing ring (16c) having three seal lips. The rolling resistance that changes on the basis of preload is controlled to be within the range of 0.12 - 0.23 N·m, and the rotation resistance of this seal ring (16c) based on the friction between each seal lip and the mating surface is controlled to be within the range of 0.03 - 0.2 N·m. This reduces the rotation torque of the hub rotating with the wheel while securing steering stability, thus improving the traveling performance of the vehicle centered on acceleration performance and fuel consumption performance.

Inventors:
SAKAMOTO JUNSHI (JP)
Application Number:
PCT/JP2003/001943
Publication Date:
August 28, 2003
Filing Date:
February 21, 2003
Export Citation:
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Assignee:
NSK LTD (JP)
SAKAMOTO JUNSHI (JP)
International Classes:
B60B35/18; B60B27/00; F16C19/18; F16C33/78; F16C35/063; (IPC1-7): F16C33/78; B60B35/18; F16C19/18; F16C33/76
Foreign References:
JP2001121904A2001-05-08
JPH1123598A1999-01-29
JPH07113418A1995-05-02
Attorney, Agent or Firm:
Kamoda, Asao (2-15-17 Nishi-Shimbash, Minato-ku Tokyo, JP)
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