推力调心滚子轴承

推力调心滚子轴承

推力调心滚子轴承的滚子是调心型的，座圈滚道路面也是调心型号的，因此具有自动调心性能；根据不同的直径系列,允许的调心角度在1度~3度之间，调心角随着负荷的增大而减小。该项类轴承为分离型轴承，可以同时承受极大的轴向负荷和一定的径向 负荷，但径向负荷不得超过轴向负荷的55%；由于肯有调心性能，这种轴承不受安装误差及轴挠曲的影响。为了防止轴承在运转时，滚子与滚道受离心力的作用产生相对滑移，导致轴与座圈分离，所以必须向工作中的轴承施加一定的轴向负荷。这些轴承的润滑方式一般为油润滑。

推力调心滚子轴承主要适用于石油机械、水力发电机、立式电动机、船上螺旋桨轴、塔吊和挤压面等。

Spherical Roller Thrust Bearings

Spherical roller thrust bearings are designed in such way that their rollers are spherical shape, and the raceway surface of housing washer is also spherical, so these bearings are self-alingned. According to the diameter series, the angles of misalignment are permissible within the range of 1~3.The larger the load, the smaller the angle. These bearings are separable formed bearings, and are featured by the extremely large axial load carrying capaibility and meanwhile they can also accommodate certain radial load. However, the radial load should not exceed 55% of the axial load anyaway. Since these bearings are self-aligning, they are not so sensitive to the mounting error and bending of the shaft. In order to prevent the rollers from sliding movement opposite to the raceway under the effect of the centrifugal force when the bearing is running, and form resulting in the circumstance of shaft and housing washer separated, therefore a certain axial load has to be carried by the operating bearings. Oil lubrication is commonly applied while these bearings are working.

Applications of spherical roller thrust bearings can be found in oil mechanism, hydroelectric generators, vertical motors, propeller axle of vessels, tower cranes and squeezing presses etc.