JPS6415520A - Magnetic bearing device - Google Patents

Magnetic bearing device

Info

Publication number
JPS6415520A
JPS6415520A JP62171487A JP17148787A JPS6415520A JP S6415520 A JPS6415520 A JP S6415520A JP 62171487 A JP62171487 A JP 62171487A JP 17148787 A JP17148787 A JP 17148787A JP S6415520 A JPS6415520 A JP S6415520A
Authority
JP
Japan
Prior art keywords
lubricant
prevented
rotor shaft
molybdenum disulfide
soft metal
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
JP62171487A
Other languages
Japanese (ja)
Inventor
Tomoaki Urano
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.)
Seiko Seiki KK
Original Assignee
Seiko Seiki KK
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 Seiko Seiki KK filed Critical Seiko Seiki KK
Priority to JP62171487A priority Critical patent/JPS6415520A/en
Publication of JPS6415520A publication Critical patent/JPS6415520A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0442—Active magnetic bearings with devices affected by abnormal, undesired or non-standard conditions such as shock-load, power outage, start-up or touchdown
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps
    • F16C2360/44—Centrifugal pumps
    • F16C2360/45—Turbo-molecular pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C39/00—Relieving load on bearings
    • F16C39/02—Relieving load on bearings using mechanical means

Abstract

PURPOSE:To prevent separation of lubricant film by coating a soft metal lubri cant film with molybdenum disulfide. CONSTITUTION:Upon interruption of power supply to an electromagnet, a rotor shaft 10 contacts with protection dry bearings 21, 22 and supported rotatably. High speed rotation of the rotor shaft is transmitted abruptly to the protection dry bearings 21, 22 to cause rotation of inner races 26 thereof with same rotary speed. Consequently, balls 24 make rolling contact with the ball side surface 26a of the inner race 26 and the ball side surface 27a of an outer race 27, but since soft metal lubricant films 31 are formed on the surfaces thereof and the uppermost surface layer 32 is coated with molybdenum disulfide, smooth lubrica tion can be achieved without requiring lubricant. As a result, separation of lubricant film due to reactive gas can be prevented and deterioration of durabil ity can be prevented.
JP62171487A 1987-07-09 1987-07-09 Magnetic bearing device Pending JPS6415520A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62171487A JPS6415520A (en) 1987-07-09 1987-07-09 Magnetic bearing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62171487A JPS6415520A (en) 1987-07-09 1987-07-09 Magnetic bearing device

Publications (1)

Publication Number Publication Date
JPS6415520A true JPS6415520A (en) 1989-01-19

Family

ID=15924008

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62171487A Pending JPS6415520A (en) 1987-07-09 1987-07-09 Magnetic bearing device

Country Status (1)

Country Link
JP (1) JPS6415520A (en)

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