THE EXPERIMENT OF FRICTIONLESS PIVOT BALL TYPE BEARINGS FOR VAWT.

Abstract

The weight of the rotational axis of a VAWT with wings attached is very heavy. Therefore, VAWT is difficult to start rotating in the condition of low wind velocity. The author has new ideas. These are low friction bearings. And the assumed name is Pivot ball type. These are suitable for radial-load bearings and for thrust-load bearings. These characteristics are measured in two different ways. And the author proved the superior characteristics of these new types of bearings.