Title :
Development of FDB spindle motors for HDD use
Author :
Matsuoka, Kaoru ; Obata, Shigeo ; Kita, Hiromi ; Toujou, Fumiyo
Author_Institution :
HD Dev. Center, Matsushita Electr. Ind. Co. Ltd., Moriguchi, Japan
fDate :
3/1/2001 12:00:00 AM
Abstract :
Hard disk drives (HDD) are improving rapidly in recording density and transfer rate every year. A significant factor contributing to their evolution is the spindle motor. Development of a spindle motor using a fluid dynamic bearing (FDB) is desirable as conventional spindle motors incorporating ball bearings are expected to reach their limitation technically in the near future. In this paper we discuss the trends of HDD, requirements for HDD spindle motors, motor construction, problems in relation to magnetic circuits, and constituent FDB technologies
Keywords :
DC motors; disc drives; machine bearings; magnetic circuits; small electric machines; FDB spindle motors; HDD use; fluid dynamic bearing; hard disk drives; magnetic circuits; motor construction; recording density; transfer rate; Ball bearings; Disk drives; Disk recording; Fluid dynamics; Frequency; Magnetic circuits; Magnetic heads; Magnetic recording; Shafts; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
