Title:
SEALING DEVICE OF BEARING FOR RAILWAY VEHICLE
Document Type and Number:
Japanese Patent JP2016014418
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a sealing device of a bearing for a railway vehicle capable of preventing intrusion of water into an inside of the bearing, and capable of preventing rust of the bearing or occurrence of separation.SOLUTION: A sealing device of a bearing for a railway vehicle includes a metal ring fixed on an end of an outer ring of a rolling bearing and having a first cylinder part and a second cylinder part on an axial outer side of the bearing, a core metal provided on an inside diameter of the first cylinder part of the metal ring, and an elastic seal material attached to the core metal and having a lip brought into contact with an outer peripheral surface of a lid member fixed on an axle from a radial outer side. On the lid member, a recessed groove is formed in a portion confronting an end of the second cylinder part, and the end of the second cylinder part 30c is fitted in the recessed groove with a slight gap so that a labyrinth is formed. Thus, intrusion of water into the inside of the rolling bearing can be prevented, and rust of the bearing and occurrence of separation can be prevented.
Inventors:
KISHI MINEO
Application Number:
JP2014135889A
Publication Date:
January 28, 2016
Filing Date:
July 01, 2014
Export Citation:
Assignee:
NSK LTD
International Classes:
F16C33/78; F16C19/38; F16C33/76; F16C33/80; F16J15/3204
Domestic Patent References:
| JP2004316853A | 2004-11-11 |