The inner race is keyed to the shaft. The outer race has h7 tolerance and should be fitted in housing with a k7 tolerance. Additional side notches provide for positive torque transmission.

内环与轴用键联接，外环尺寸公差为h 7与公差为h7的机壁配合，外环两侧端面键用于固定外环与机壁以传递扭矩。

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"A national strategy to support local authorities on housing strategies for Gypsy-Travellers and a national awareness campaign to ensure there is a zero-tolerance on discrimination against Gypsy-Travellers must be initiated and led by the Scottish government, " she said.

BBC: Caravan site