Machine element or mechanism – Gearing – Teeth
Patent
1994-06-21
2000-02-15
Graysay, Tamara L.
Machine element or mechanism
Gearing
Teeth
74 8915, F16H 5517
Patent
active
060239913
ABSTRACT:
A ball screw comprising a screw shaft, a ball screw nut, a plurality of balls contained in the ball screw nut which is in threadable engagement with the shaft so that it is capable of relative movement in the linear axial direction as guided by the rolling of the balls, and a lubricant-containing polymer member that is installed in the ball screw nut in contact with the balls or in slidable contact with screw grooves in the screw shaft. The lubricant seeps out of the polymer member slowly and is supplied not only to the balls but also to the screw grooves, so that it maintains the desired lubricating effect in a consistent and automatic way over an extended period of time.
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Namimatsu Ken
Yabe Toshikazu
Fenstermacher David M.
Graysay Tamara L.
NSK Ltd.
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