Wheel hub unit is designed with an inner flange and the outer flange and the inner flange bolted on the driving shaft, the bearing outer flange mounted together.

轮毂单元设计成有内法兰和外法兰，内法兰用螺栓固定在驱动轴上，外法兰将整个轴承安装在一起。

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Geometric accuracy and semblance quality were required seriously during grinding outer ring raceway and rib of bearing synchronistically, common corindon grinding wheel was not very effective.

轴承外滚道及挡边同步磨削时几何精度和外观质量要求高，普通刚玉类砂轮加工效果不好。

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DAC series wheel bearing is a double row angular contact ball bearing incorporating an integral outer ring and two separable inner rings which is available with seals or without seals.

DAC系列轮毂轴承是由一个整体外圈和两个可分离内圈组成的双列角接触球轴承，有带密封圈和不带密封圈两种结构。

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The AAIB report said the wheel's outer bearing had seized and "consequential damage had allowed the wheel to detach".

BBC: Flybe plane passengers 'saw wheel fall off'

The Air Accidents Investigation Branch (AAIB) report said the wheel's outer bearing had seized.

BBC: Flybe plane passengers 'saw wheel fall off'