Title :
Design of a hybrid fluid bearing system for HDD spindles
Author :
Zhang, Q.D. ; Chen, S.X. ; Liu, Z.J.
Author_Institution :
Data Storage Inst., Singapore
fDate :
3/1/1999 12:00:00 AM
Abstract :
This paper introduces a novel design of hybrid hydrodynamic and aerodynamic fluid bearing system. The fluid bearing system consists of an oil lubricated journal bearing unit with herringbone grooves and an air lubricated thrust bearing unit having a conical thrust plate engraved with spiral grooves. This bearing system has lower power consumption and enables a reliable seal design only for its journal bearings. The spindle motor with this bearing system has been prototyped. In this paper some simulation and testing results are reported
Keywords :
disc drives; fluidic devices; hard discs; lubrication; HDD spindles; air lubricated thrust bearing unit; conical thrust plate; herringbone grooves; hybrid fluid bearing system; hybrid hydrodynamic/aerodynamic system; oil lubricated journal bearing unit; power consumption; reliable seal design; spindle motor; Aerodynamics; Energy consumption; Hydrodynamics; Lubricating oils; Petroleum; Power system reliability; Prototypes; Seals; Spirals; Testing;
Journal_Title :
Magnetics, IEEE Transactions on
