JPS5718812A - Dynamic pressure type spindle - Google Patents

Dynamic pressure type spindle

Info

Publication number
JPS5718812A
JPS5718812A JP9329780A JP9329780A JPS5718812A JP S5718812 A JPS5718812 A JP S5718812A JP 9329780 A JP9329780 A JP 9329780A JP 9329780 A JP9329780 A JP 9329780A JP S5718812 A JPS5718812 A JP S5718812A
Authority
JP
Japan
Prior art keywords
radial
spindle
dynamic pressure
bearing part
face
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP9329780A
Other languages
Japanese (ja)
Inventor
Masaru Tamaki
Ikunori Sakatani
Katsuhiko Tanaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NSK Ltd
Original Assignee
NSK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NSK Ltd filed Critical NSK Ltd
Priority to JP9329780A priority Critical patent/JPS5718812A/en
Publication of JPS5718812A publication Critical patent/JPS5718812A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent noise, vibration and uneven torque during the revolution of a spindle so that it may be turned with small torque by making all the bearing part a dynamic pressure type bearing which uses a lubricant as a media.
CONSTITUTION: An outer cylinder 1 has a round hole to which a spindle 2 is to be inserted, and a thrust receiving member 12 having a semispherically recessed receving face 121 is held against the said cylinder via retainer plate 13. The radial gap t at the portion between an inner radial face 111 and an inner radial face 112 is made larger than the gap t2 at the radial bearing portion. The spindle 2 has outer radial faces 22 and 23 where multiple number of groove for dynamic pressure generation and has at its end a semispherically protruding end 22 having multiple number of spiral groove. A lubricant is filled in the radial bearing part and the thrust bearing part to form a pressure fluid layer.
COPYRIGHT: (C)1982,JPO&Japio
JP9329780A 1980-07-10 1980-07-10 Dynamic pressure type spindle Pending JPS5718812A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9329780A JPS5718812A (en) 1980-07-10 1980-07-10 Dynamic pressure type spindle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9329780A JPS5718812A (en) 1980-07-10 1980-07-10 Dynamic pressure type spindle

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP17251784A Division JPS60121308A (en) 1984-08-21 1984-08-21 Dynamic pressure type composite bearing device

Publications (1)

Publication Number Publication Date
JPS5718812A true JPS5718812A (en) 1982-01-30

Family

ID=14078424

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9329780A Pending JPS5718812A (en) 1980-07-10 1980-07-10 Dynamic pressure type spindle

Country Status (1)

Country Link
JP (1) JPS5718812A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59151615A (en) * 1983-02-15 1984-08-30 Koyo Seiko Co Ltd Vertical turning equipment
US4573807A (en) * 1984-01-31 1986-03-04 Matsushita Electric Industrial Co., Ltd. Fluid bearing device
US4656545A (en) * 1983-07-28 1987-04-07 Nippon Seiko Kabushiki Kaisha Magnetic disc memory device
US5623382A (en) * 1993-01-29 1997-04-22 Matsushita Electrical Industrial Co., Ltd. Disk driving apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4132414A (en) * 1972-02-07 1979-01-02 Jack Dinsdale Gramophone turntable apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4132414A (en) * 1972-02-07 1979-01-02 Jack Dinsdale Gramophone turntable apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59151615A (en) * 1983-02-15 1984-08-30 Koyo Seiko Co Ltd Vertical turning equipment
US4656545A (en) * 1983-07-28 1987-04-07 Nippon Seiko Kabushiki Kaisha Magnetic disc memory device
US4573807A (en) * 1984-01-31 1986-03-04 Matsushita Electric Industrial Co., Ltd. Fluid bearing device
US5623382A (en) * 1993-01-29 1997-04-22 Matsushita Electrical Industrial Co., Ltd. Disk driving apparatus

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