Spindle motor and rotating shaft supporting device for spindle m

Details Spindle motor and rotating shaft supporting device for spindle m Spindle motor and rotating shaft supporting device for spindle m

1998-09-08

2000-02-08

Enad, Elvin

Electrical generator or motor structure

Dynamoelectric

Rotary

310 67R, 310 69R, 310 905, 310 42, 310 44, 360 9701, H02K 516, H02K 708

Patent

active

060231149

ABSTRACT:
Bearing 1 comprises a porous bearing body 1a having a bearing surface 1b disposed to oppose an outer circumferential surface of the rotating shaft 3 via a bearing clearance 4, a lubricating oil or lubricating grease impregnated in the bearing body 1a, and hydrodynamic pressure generating grooves 1c formed on the bearing surface 1b of the bearing body 1a. The rotating shaft 3 is supported, without making contact with the bearing 1, by a hydrodynamic pressure oil film formed in the bearing clearance and the oil is circulated, via openings made in the surface of the bearing body 1a, between the inside of the bearing body 1a and the bearing clearance 4.

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patent: 5821655 (1998-10-01), Tokushima et al.
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