Patent ID: 7857100
Filing Date: 2010-12-28
Classification: F16H,Y10T

Abstract:
1. A ball screw lubricative sealing device comprising: either one of end caps and end covers attached to both ends of a screw nut of a ball screw, respectively, using fastening bolts each having a head with a concentric screw thread formed therein; generally cylindrical case members attached to either one of said end caps and said end covers, respectively, using mounting bolts engaged with the concentric screw threads formed in the heads of the fastening bolts; a thin cap inserted and fixed inside each of said case members; a plurality thin seal plates fitted inside said thin cap and made of a lubricating oil impregnated material formed of a fiber material which is made of a three-dimensionally crosslinked plastic fiber and resilient rubber members; and a space forming a grease reservoir formed inside each of said case members between said plurality of thin seal plates and one end of said screw nut; wherein outer circumferential surfaces of said plurality of thin seal plates are bonded to an inner circumferential surface of said thin cap using an adhesive, in which said plurality of thin seal plates are displaced in respective circumferential direction and are axially stacked together.