Non-repeatable runout measurement and simulation of fluid lubricated spindles

Author

Swann, A.C. ; Harrison, Joshua C. ; Talke, Frank E.

Author_Institution

Seagate Technol., Minneapolis, MN, USA

Volume

32

Issue

3

fYear

1996

fDate

5/1/1996 12:00:00 AM

Firstpage

1727

Lastpage

1732

Abstract

The non-repeatable runout (NRRO) of small self-acting air bearing spindles is investigated using high precision capacitance probe transducers. Transient NRRO, spindle start-up time, and power consumption are determined at start-up for horizontal and vertical spindle orientation. The design of fluid spindles for magnetic recording disk drive applications is optimized by means of finite element-based numerical simulation. Advantages and disadvantages of fluid lubricated spindles are discussed

Keywords

capacitance measurement; finite element analysis; hard discs; lubrication; magnetic recording; magnetic recording noise; background noise; capacitance probe transducers; finite element-based numerical simulation; fluid lubricated spindles; fluid spindle optimization; horizontal spindle orientation; magnetic recording disk drive applications; nonrepeatable runout; power consumption; power spectral density; self-acting air bearing spindles; spindle start-up time; transient NRRO; vertical spindle orientation; Capacitance; Design optimization; Disk drives; Energy consumption; Finite element methods; Magnetic liquids; Magnetic recording; Numerical simulation; Probes; Transducers;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.492856

Filename

492856