Title:
SEALING DEVICE AND ROLLER BEARING UNIT COMPRISING THE SAME
Document Type and Number:
Japanese Patent JP2005016603
Kind Code:
A
Abstract:
To sufficiently suppress changes of a contact load at a sliding part even if a clamping margin of an outside seal lip 22b changes.
A minimum wall thickness part 36 is provided near the base end of the outside seal lip 22b. The thickness of the outside seal lip 22b gradually increases as advances from the minimum wall thickness part 36 to a maximum wall thickness part 37 provided near the tip edge. A clamping margin L1 in the axial direction on the outside surface of a slinger 16 of the outside seal lip 22b is set to be 20% or more of the dimension in the axial direction of the outside seal lip 22b in a free condition.
Inventors:
ASAI HIROMITSU
UCHIYAMA TAKAHIKO
AIHARA SHIGEAKI
YOKOYAMA KEISUKE
UCHIYAMA TAKAHIKO
AIHARA SHIGEAKI
YOKOYAMA KEISUKE
Application Number:
JP2003180579A
Publication Date:
January 20, 2005
Filing Date:
June 25, 2003
Export Citation:
Assignee:
NSK LTD
International Classes:
F16C33/78; F16J15/3232; F16J15/3236; (IPC1-7): F16J15/32; F16C33/78
Domestic Patent References:
| JP2003065289A | 2003-03-05 | |||
| JP2002062305A | 2002-02-28 | |||
| JPH0171272U | 1989-05-12 | |||
| JPH0462966U | 1992-05-28 | |||
| JP2000161498A | 2000-06-16 | |||
| JPH0222467U | 1990-02-14 | |||
| JP2001215133A | 2001-08-10 |
Attorney, Agent or Firm:
Takeo Koyama
Nakai Shun
Kinzo Koyama
Nakai Shun
Kinzo Koyama