Bearing device and fan apparatus

摘要

In a bearing device equipped with a fastening element for rotatably supporting a drive shaft of a hand tool unit, the fastening element has a heat conducting structure for conveying heat from a bearing region of the fastening element into a ventilation region of said bearing element, and in a fan apparatus provided with a fan impeller for cooling a drive unit of a machine tool the fan impeller is provided to cool a heat conducting structure which conveys heat from a bearing region of the hand machine tool into a ventilation region of the same.