Title:
THRUST BEARING
Document Type and Number:
Japanese Patent JP3077919
Kind Code:
B2
Abstract:
PURPOSE: To increase the current density of a coil in an electromagnet by forming radial grooves in a thrust disc so as to cool the coil.
CONSTITUTION: Ventilating holes 10 are formed on a thrust disc 2, in a circumferential direction at several positions from the outermost diametrical position to the center position of the disc. Holes 11 are formed in the disc 2 on the inner diametrical side thereof, axially piercing therethrough at positions the same as the positions of the ventilating holes 10. In association with the rotation of a rotary shaft 1, the thrust disc 2 is rotated fluid flows from a cooling jacket 18 in rear of a coil support 5 to the outer diameter side of the thrust disc 2 through the inner diameter side thereof due to fun action caused by the ventilating holes 10 formed on the threat disc. As a result, the heat transmission at the rear surface of the coil support 5 is promoted, thereby it is possible to effectively cool the coil 4.
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Inventors:
Hidetoshi Kanzaki
Application Number:
JP23522991A
Publication Date:
August 21, 2000
Filing Date:
September 17, 1991
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
F16C32/04; F16C37/00; F16C39/06; (IPC1-7): F16C32/04
Domestic Patent References:
| JP1190231A |
Attorney, Agent or Firm:
Hideaki Togawa
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