本文引用了法向游隙的概念，对双列向心球面球轴承和双列向心球面滚子轴承的游隙关系和初始接触角作了一些分析，确定了它们之间的相互关系。

In this paper the relation between axial and radial clearance and free contact angle are determine through analysing double-row angular-contact ball bearings and double-row spherical roller bearings.

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