Hinge pivot for disk drive |
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Authors: | Xiong Liu Joseph C Liu ChoonKiat Lim |
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Affiliation: | (1) Seagate Technology International, #63 The Fleming, Science Park Drive, Science Park, Singapore, 118249 |
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Abstract: | This paper discusses the findings of a hinge pivot for use in hard disk drives (HDD). The actuator assembly in a HDD is supported
by a pivot cartridge and controlled by a servo system to perform seek and track following operations for data recording. The
cartridge is composed of a pair of pre-loaded ball bearings. Due to the demand for thin hard disk drives and hence, the need
to reduce the height of the actuator assembly, a hinge pivot is proposed to replace the set of bearings. The shaft of the
pivot is connected to the sleeve with thin hinges made of ultra-high heat-resistant polyamide film, such as Upilex. Measurement
showed that the hinge pivot did not exhibit the nonlinear effects during low frequency actuation, such was inherent for ball
bearing pivots. Experiment also showed that at least a million life cycles can be achieved without any performance degradation. |
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Keywords: | Hard disk drive Actuator Hinge Pivot |
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