Title :
Some design and prototyping issues on a 20000 rpm HDD spindle motor with a ferro-fluid bearing system
Author :
Chen, Shi Xin ; De Zhang, Qi ; Chong, How Ching ; Komatsu, Terutoshi ; Kang, Cheng Hia
Author_Institution :
Data Storage Inst., Nat. Univ. of Singapore, Singapore
fDate :
3/1/2001 12:00:00 AM
Abstract :
A high-speed ferro-fluid bearing spindle motor for hard disk drive is introduced. Some design challenges and considerations on electrical motor, bearing system and spindle structure are addressed. The testing results of the prototypes are presented and discussed. The shown testing results of the prototypes indicate that the objective of developing a high-speed, high-performance, fluid-bearing spindle motor is fulfilled. It is a prospective spindle motor to be used in future hard disk drives
Keywords :
disc drives; hard discs; machine bearings; magnetic bearings; magnetic fluids; small electric machines; ferrofluid bearing system; hard disk drive; spindle motor; Acoustic noise; Ball bearings; Disk recording; Hard disks; Hydrodynamics; Lubricants; Memory; Prototypes; Seals; Testing;
Journal_Title :
Magnetics, IEEE Transactions on
