Patent ID: 8885293
Filing Date: 2014-11-11
Classification: B21D,F16C,G11B,H02K,Y10T

Abstract:
1. A rotating device comprising: a shaft body comprising a lower rod and an upper rod formed with a retainer hole which encircles a part of the lower rod and which fastens the lower rod; a bearing body comprising a shaft encircling member that encircles the shaft body and being freely rotatable relative to the shaft body; a radial dynamic pressure generating groove which is provided in either one of the shaft body and the bearing body and which generates dynamic pressure in a radial direction; a thrust dynamic pressure generating groove which is provided in either one of the shaft body and the bearing body and which generates dynamic pressure in a thrust direction; and a lubrication medium present in a gap between the shaft body and the bearing body, wherein a sealant is present in a space between the lower rod and the upper rod in the radial direction.