发明名称 |
Ceramic ball, ball bearing, motor having bearing, hard disk drive, polygon scanner, and method for manufacturing ceramic ball |
摘要 |
A method for manufacturing ceramic balls useful as ball bearings is described, wherein spherical green bodies are formed into ceramic balls having few pores and substantially uniform strength distribution, using a rubber die having a hardness not higher than 65.
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申请公布号 |
US7029623(B2) |
申请公布日期 |
2006.04.18 |
申请号 |
US20010908663 |
申请日期 |
2001.07.20 |
申请人 |
NGK SPARK PLUG CO., LTD. |
发明人 |
NIWA TOMONORI |
分类号 |
B28B1/29;B28B3/00;B28B7/34;B29C43/12;F16C33/32;G11B19/20;G11B21/02;H02K5/173 |
主分类号 |
B28B1/29 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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