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Title:
BEARING VARIABLE PRELOAD SYSTEM UTILIZING GAP BETWEEN STROKES FOR PRELOAD ADJUSTMENT AND ELASTIC DEFORMATION OF SEALING MEMBER
Document Type and Number:
WIPO Patent Application WO/2014/200170
Kind Code:
A1
Abstract:
A bearing variable preload system utilizing gaps between strokes for preload adjustment and elastic deformation of a sealing member, according to the present invention, comprises: a housing; bearings provided to the housing; a spindle coupled to the inner wheels of the bearings so as to rotate; and a variable preload unit provided to the housing and applying a variable preload to the outer wheels of the bearings, wherein the variable preload unit has a chamber of which the airtightness is maintained by a sealing member between a pressing member coming into contact with the outer wheel of the bearing and the bearing housing part and a pressure supply unit for supplying air pressure or oil pressure to the chamber through a supply pipe provided to the housing so as to vary a preload applied to the outer wheel of the bearing. The spindle having the preload system, according to the present invention, has the effects of improving rigidness, preventing heat, reducing noise and vibration, extending the lifespan of the bearing or the like.

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Inventors:
KIM, Sung Bok (115Dong 1605Ho, 77 Chipyeong-ro,Seo-gu, Gwangju 502-772, 502-772, KR)
Application Number:
KR2014/002145
Publication Date:
December 18, 2014
Filing Date:
March 13, 2014
Export Citation:
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Assignee:
ECHO TECH CO., LTD. (28-8, Pyeongdongsandan-ro 143beon-gilGwangsan-gu, Gwangju 506-501, 506-501, KR)
International Classes:
B23Q5/04; B23B19/02; F16C25/08
Foreign References:
KR20090075480A2009-07-08
JP2011251385A2011-12-15
JPH0724604A1995-01-27
KR100246309B12000-04-01
KR100246309B12000-04-01
EP0997657A12000-05-03
US4611934A1986-09-16
KR100925919B12009-11-09
Attorney, Agent or Firm:
LEE, Jea Ryang (177 Hanamsandan 8beon-ro, Gwangsan-gu, Gwangju 506-301, 506-301, KR)
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