WET-TYPE END PART SEAL MATERIAL FOR BALL SCREW, AND BALL SCREW USING SAME
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United States of America
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Issued Date -
Mar 24, 2022
app pub date -
Oct 3, 2019
filing date -
Oct 3, 2019
priority date (Note) -
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Abstract
A ball screw in which a nut and a male-threaded shaft provided with an arcuate continuous groove threadedly engage by way of a multiplicity of steel spheres inserted between the male threads and female threads, the end portion seal member is capable of being attached toward a front or toward a back from said nut, and has a support frame body arranged at an outside circumference of said male-threaded shaft; a base fabric portion, a back surface of which is secured to an inside circumferential surface of said support frame body; and the cut pile that protrudes in such fashion as to be directed toward said groove from a front surface of said base fabric portion; wherein fiber tip portions of said cut pile are bent and made to abut said groove so as to occlude a gap between said groove and said support body, and good lubricant is retained.
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