JPS578964A - Pivot bearing device of magnetic disk device - Google Patents

Pivot bearing device of magnetic disk device

Info

Publication number
JPS578964A
JPS578964A JP8144580A JP8144580A JPS578964A JP S578964 A JPS578964 A JP S578964A JP 8144580 A JP8144580 A JP 8144580A JP 8144580 A JP8144580 A JP 8144580A JP S578964 A JPS578964 A JP S578964A
Authority
JP
Japan
Prior art keywords
pivot
jig
diameter
magnetic disk
pivot bearing
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.)
Granted
Application number
JP8144580A
Other languages
Japanese (ja)
Other versions
JPS6146899B2 (en
Inventor
Isao Kinumegawa
Kazuo Nakakoshi
Nobuyoshi Ushijima
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8144580A priority Critical patent/JPS578964A/en
Publication of JPS578964A publication Critical patent/JPS578964A/en
Publication of JPS6146899B2 publication Critical patent/JPS6146899B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks

Landscapes

  • Support Of The Bearing (AREA)
  • Moving Of Heads (AREA)

Abstract

PURPOSE:To enhance the mechanical resonance frequency of an access part and to decrease the number of parts by reducing the weight of a swing-arm type pivot by using a hollow shaft as the pivot. CONSTITUTION:A pivot 3 is hollowed circularly and has a hollow of accurate circle 3a and an ellipse outer circumferential surface 3b. When it is fitted, a jig is inserted into a hole with a shorter diameter d2 to deform the pivot until the external diameter is nearly uniformed and in this state, it is inserted into a needlelike roller bearing provided to a carriage block previously. Then, when the jig is extracted, overpressure in the radius direction operates on the part which contacts with the longer-diameter part of the pivot 3.
JP8144580A 1980-06-18 1980-06-18 Pivot bearing device of magnetic disk device Granted JPS578964A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8144580A JPS578964A (en) 1980-06-18 1980-06-18 Pivot bearing device of magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8144580A JPS578964A (en) 1980-06-18 1980-06-18 Pivot bearing device of magnetic disk device

Publications (2)

Publication Number Publication Date
JPS578964A true JPS578964A (en) 1982-01-18
JPS6146899B2 JPS6146899B2 (en) 1986-10-16

Family

ID=13746590

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8144580A Granted JPS578964A (en) 1980-06-18 1980-06-18 Pivot bearing device of magnetic disk device

Country Status (1)

Country Link
JP (1) JPS578964A (en)

Also Published As

Publication number Publication date
JPS6146899B2 (en) 1986-10-16

Similar Documents

Publication Publication Date Title
ES262009U (en) Device for chucking tubular winding cores
JPS6421225A (en) Torsion damper for disc type friction clutch
DE3266293D1 (en) High speed rotor especially for flywheel
JPS578964A (en) Pivot bearing device of magnetic disk device
JPS5620826A (en) Preparation of pivot bearing
JPS5662053A (en) Permanent magnet sunchronous motor
JPS649312A (en) Rotation detector
JPS5720914A (en) Rotor for rotary magnetic head
JPS54125409A (en) Outer rotor motor
JPS5740144A (en) Flywheel device
SE8600148D0 (en) MAGNETIC GRADIOMETER
JPS6476454A (en) Disk driving device
JPS56131832A (en) Uniform speed joint
JPS5419053A (en) Nut for ball screw device
JPS57212618A (en) Rotary magnetic head drum structure
JPS573564A (en) Motor
JPS54129307A (en) Casting device of cage type rotors
JPS52109679A (en) Alignment apparatus
JPS52127343A (en) Centering method for optical communication parts
GB2003414A (en) Wire-drawing machine
JPS55122459A (en) Device for adjusting balance of rotor
JPS55123037A (en) Method of continuously adjusting dynamic balance of entire rotating system from inside of static system
JPS5397145A (en) Method of manufacturing pivot bearing member
JPS5344811A (en) Coreless motor
BROWN et al. High speed cylindrical roller bearing development[Final Report, 15 Sep. 1977- 29 Feb. 1980]