Design of high-speed magnetic fluid bearing spindle motor

A high-speed magnetic-fluid bearing spindle motor for hard disk drive is introduced. Some design challenges and considerations of its load capacity, stiffness, power consumption, lubricant leakage and shock resistant capability are addressed. The prototypes were fabricated and the test results of th...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2001-07, Vol.37 (4), p.2647-2650
Main Authors: Qide Hang, Shixin Chen, Winoto, S.H., Eng-Hong Ong
Format: Article
Language:English
Subjects:
Acoustic noise
Applied sciences
Bearing
Damping
Disk drives
Electronics
Energy consumption
Exact sciences and technology
Hard disks
High speed
Hydrodynamics
Lubricants
Magnetic device characterization, design, and modeling
Magnetic devices
Magnetic fluids
Magnetic levitation
Magnetic liquids
Magnetism
Motors
Power consumption
Prototypes
Seals
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Spindles
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Summary:A high-speed magnetic-fluid bearing spindle motor for hard disk drive is introduced. Some design challenges and considerations of its load capacity, stiffness, power consumption, lubricant leakage and shock resistant capability are addressed. The prototypes were fabricated and the test results of the prototypes are presented and discussed. The results show that the magnetic-fluid bearing spindle motor is very promising for use in future hard disk drives.
ISSN:0018-9464
1941-0069
DOI:10.1109/20.951262