Reduction of NRRO in ball bearings for HDD spindle motors
In this paper, it is theoretically and experimentally analyzed that the non-repetitive run-out (NRRO) of a ball bearing is caused by geometrical errors of the inner and outer races and the balls, and the number of balls. The results are summarized as follows: (1) As for the geometrical errors of the...
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| Veröffentlicht in: | Precision engineering 2004-10, Vol.28 (4), p.409-418 |
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| creator | Noguchi, Shoji Ono, Kyosuke |
| description | In this paper, it is theoretically and experimentally analyzed that the non-repetitive run-out (NRRO) of a ball bearing is caused by geometrical errors of the inner and outer races and the balls, and the number of balls.
The results are summarized as follows:
(1)
As for the geometrical errors of the inner and outer races, it is possible to reduce the NRRO to be less than 1
nm by choosing 12 or 18 number of balls, even if the inner and outer races have a harmonic undulation of less than the 11th order.
(2)
The NRRO of a ball bearing with 12 balls is very small even if the geometrical errors of ball bearing parts are large. It was confirmed that 12 was an optimal number of balls for ball bearings used for HDD spindle motors. |
| doi_str_mv | 10.1016/j.precisioneng.2004.01.005 |
| format | Article |
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The results are summarized as follows:
(1)
As for the geometrical errors of the inner and outer races, it is possible to reduce the NRRO to be less than 1
nm by choosing 12 or 18 number of balls, even if the inner and outer races have a harmonic undulation of less than the 11th order.
(2)
The NRRO of a ball bearing with 12 balls is very small even if the geometrical errors of ball bearing parts are large. It was confirmed that 12 was an optimal number of balls for ball bearings used for HDD spindle motors.</description><identifier>ISSN: 0141-6359</identifier><identifier>EISSN: 1873-2372</identifier><identifier>DOI: 10.1016/j.precisioneng.2004.01.005</identifier><identifier>CODEN: PREGDL</identifier><language>eng</language><publisher>New York, NY: Elsevier Inc</publisher><subject>Applied sciences ; Ball bearing ; Ball number ; Exact sciences and technology ; HDD ; Mechanical engineering. Machine design ; NRRO ; Precision engineering, watch making ; Spindle motor</subject><ispartof>Precision engineering, 2004-10, Vol.28 (4), p.409-418</ispartof><rights>2004 Elsevier Inc.</rights><rights>2004 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c383t-6531b695d34aba4e09607dc20b7203931f9cd5404864c0340c1d636efcc7fa8d3</citedby><cites>FETCH-LOGICAL-c383t-6531b695d34aba4e09607dc20b7203931f9cd5404864c0340c1d636efcc7fa8d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S014163590400042X$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=16127142$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Noguchi, Shoji</creatorcontrib><creatorcontrib>Ono, Kyosuke</creatorcontrib><title>Reduction of NRRO in ball bearings for HDD spindle motors</title><title>Precision engineering</title><description>In this paper, it is theoretically and experimentally analyzed that the non-repetitive run-out (NRRO) of a ball bearing is caused by geometrical errors of the inner and outer races and the balls, and the number of balls.
The results are summarized as follows:
(1)
As for the geometrical errors of the inner and outer races, it is possible to reduce the NRRO to be less than 1
nm by choosing 12 or 18 number of balls, even if the inner and outer races have a harmonic undulation of less than the 11th order.
(2)
The NRRO of a ball bearing with 12 balls is very small even if the geometrical errors of ball bearing parts are large. It was confirmed that 12 was an optimal number of balls for ball bearings used for HDD spindle motors.</description><subject>Applied sciences</subject><subject>Ball bearing</subject><subject>Ball number</subject><subject>Exact sciences and technology</subject><subject>HDD</subject><subject>Mechanical engineering. Machine design</subject><subject>NRRO</subject><subject>Precision engineering, watch making</subject><subject>Spindle motor</subject><issn>0141-6359</issn><issn>1873-2372</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><recordid>eNqNkF1LwzAUhoMoOKf_IQh613ry0bT1Tpw6YTgYeh3SJB0ZXVOTTvDfm7GBXnp1bp73fTkPQtcEcgJE3G3yIVjtovO97dc5BeA5kBygOEETUpUso6ykp2gChJNMsKI-RxcxbgCgrIBPUL2yZqfHlMe-xW-r1RK7Hjeq63BjVXD9OuLWBzyfzXAcXG86i7d-9CFeorNWddFeHe8UfTw_vT_Os8Xy5fXxYZFpVrExEwUjjagLw7hqFLdQCyiNptCUFFjNSFtrU3DgleAaGAdNjGDCtlqXraoMm6LbQ-8Q_OfOxlFuXdS261Rv_S5KWqd0mWam6P4A6uBjDLaVQ3BbFb4lAbm3JTfyry25tyWByGQrhW-OKypq1bVB9Qn8bRCEloTTxM0OnE0vfzkbZNTO9toal6pHabz7z9wP8iyFUw</recordid><startdate>20041001</startdate><enddate>20041001</enddate><creator>Noguchi, Shoji</creator><creator>Ono, Kyosuke</creator><general>Elsevier Inc</general><general>Elsevier Science</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope></search><sort><creationdate>20041001</creationdate><title>Reduction of NRRO in ball bearings for HDD spindle motors</title><author>Noguchi, Shoji ; Ono, Kyosuke</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c383t-6531b695d34aba4e09607dc20b7203931f9cd5404864c0340c1d636efcc7fa8d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Applied sciences</topic><topic>Ball bearing</topic><topic>Ball number</topic><topic>Exact sciences and technology</topic><topic>HDD</topic><topic>Mechanical engineering. Machine design</topic><topic>NRRO</topic><topic>Precision engineering, watch making</topic><topic>Spindle motor</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Noguchi, Shoji</creatorcontrib><creatorcontrib>Ono, Kyosuke</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><jtitle>Precision engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Noguchi, Shoji</au><au>Ono, Kyosuke</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Reduction of NRRO in ball bearings for HDD spindle motors</atitle><jtitle>Precision engineering</jtitle><date>2004-10-01</date><risdate>2004</risdate><volume>28</volume><issue>4</issue><spage>409</spage><epage>418</epage><pages>409-418</pages><issn>0141-6359</issn><eissn>1873-2372</eissn><coden>PREGDL</coden><abstract>In this paper, it is theoretically and experimentally analyzed that the non-repetitive run-out (NRRO) of a ball bearing is caused by geometrical errors of the inner and outer races and the balls, and the number of balls.
The results are summarized as follows:
(1)
As for the geometrical errors of the inner and outer races, it is possible to reduce the NRRO to be less than 1
nm by choosing 12 or 18 number of balls, even if the inner and outer races have a harmonic undulation of less than the 11th order.
(2)
The NRRO of a ball bearing with 12 balls is very small even if the geometrical errors of ball bearing parts are large. It was confirmed that 12 was an optimal number of balls for ball bearings used for HDD spindle motors.</abstract><cop>New York, NY</cop><pub>Elsevier Inc</pub><doi>10.1016/j.precisioneng.2004.01.005</doi><tpages>10</tpages></addata></record> |
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| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Applied sciences Ball bearing Ball number Exact sciences and technology HDD Mechanical engineering. Machine design NRRO Precision engineering, watch making Spindle motor |
| title | Reduction of NRRO in ball bearings for HDD spindle motors |
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