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角接触球轴承
该轴承可以承受同时作用的径向和轴向负荷,也可以承受纯轴向负荷,接触角越大,承受轴向负荷的能力也越大。在承受径向载荷时,会引起附加轴向力,因此该轴承一般都成对使用。DB(背对背)组合、DF(面对面)组合可承受径向负荷与双向轴向负荷。DT(串联)组合适用单向轴向负荷较大,单个轴承的额定负荷不足的场面。该轴承负荷容量大,刚性强,转动平稳,极限转速较高,可调整游隙预过盈,所以特别适用于高速精密机床。
Angular  contact  ball  bearing
The bearing can bear simultaneous acting radial and axial loads. It also bear axial load only. The bigger the contact angle,  the larger the capacity to bear axial loads. When the bearing bears radial loads, an additional axial force may occur. As a result, the bearing is usually mounted and used in pair. DB (back to back) and DF (face to face) combinations can bear radial loads and bi-directional axial loads. DT(in series)  combination is applicable for the conditions of bigger unidirectional axial loads and insufficient rating load of single bearing. The bearing is characterized with large load-bearing capacity, good rigidity, mooth rotation, high limit revolution and adjustable play shrink range. Therefore, it is especially applicable for high speed precision machine tools.  
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