WATER PUMP BEARING

Japanese Patent JP2014009788

A

To provide a water pump bearing having a low rotation torque while preventing a grease leakage and dust intrusion.

A water pump bearing 1 includes: an inner race 2 fixed to a housing 10; an outer race 3 coupled to a rotation shaft 7 that is continuously connected to a propeller 11 for circulating cooling water at one end of the rotation shaft, via a plate 8; a plurality of rolling elements 5 interposed between the inner race 2 and the outer race 3; and a pair of sealing members 4 for sealing axial both end openings of the inner race 2 and the outer race 3. The water pump bearing is an outer race rotating-type bearing in which grease containing base oil and a thickening agent is encapsulated in the periphery of the rolling element 5. The outer race 3 is integrally provided with a pulley 9 at an outer diameter part thereof. The base oil has kinetic viscosity of 13-73 mm²/s at 40°C, and the thickening agent is made of an urea compound.

FUJINIWA IKUO
OISHI SHINJI
NISHIDA HARUO

JP2012148556A

January 20, 2014

July 02, 2012

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NTN TOYO BEARING CO LTD

F16C33/66; C10M105/32; C10M105/38; C10M107/02; C10M115/08; C10M169/04; F04D29/049; F16C19/08; F16C33/78; F16C35/067; F16H55/36; F16H55/48; C10N20/02; C10N30/00; C10N30/06; C10N40/02; C10N50/10

JP2002339995A	2002-11-27
JP2010053984A	2010-03-11
JP2005325868A	2005-11-24
JP2009250377A	2009-10-29
JPH05312186A	1993-11-22
JP2008303896A	2008-12-18
JP2010084817A	2010-04-15
JP2011085231A	2011-04-28
JP2002339995A	2002-11-27
JP2010053984A	2010-03-11
JP2005325868A	2005-11-24

Wake Manipulation
Wake Hikari

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