Characteristics of Type QZ spherical steel bearing

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Characteristics of Type QZ spherical steel bearing
Posting date : Sep 14, 2007
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Characteristics of Type QZ spherical steel bearing: The spherical steel bearing is characterized by reliable force transmission and flexible turning. Just like pot rubber bearing, the spherical steel bearing also features large bearing capacity and allows for larger bearing displacement. In addition, it accommodates for large turn angle of the bearing. Compared with pot rubber bearing, it has the following advantages: 1) The spherical steel bearing relies on the spherical face for force transmission without the occurring of pinch phenomenon, and the counterforce acting on the concrete is relatively uniform; 2) Rotation of the bearing is realized through sliding of the spherical PTFE board. The rotative moment is rather small, which is only relative to the radius of the bearing spherical face as well as the friction coefficient of the PTFE board, and has nothing to do with the turn angle of the bearing. Therefore, it is especially suitable for large turn angle applications, with the designed turn angle larger than 0.05rad; 3) Turning performance of the bearing in all directions is identical, suitable for wide bridge and curved bridge; 4) The bearing does not need rubber support, thus avoiding the impact of ageing rubber on the bearing turning performance, especially suitable for application in cold regions.

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