Bearing for vertical axis windmill and vertical axis wind power generator
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United States of America Patent
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Oct 24, 2017
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N/A
app pub date -
Nov 28, 2012
filing date -
Nov 29, 2011
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Abstract
In a bearing for vertical axis windmill configured to rotatably support a vertical axis of a vertical axis windmill, the bearing includes a ball (7), a diameter of the ball and a curvature of a rolling groove of the bearing are set to satisfy a predetermined starting torque and a load rating. For example, the curvature of the rolling groove of the bearing is 54% or more and 100% or less, and the diameter of the ball has a ratio of 20% or less with respect to a vertical shaft (2).
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