| 摘要 |
A bearing unit rotatably supporting a shaft (2), comprising a radial bearing (4) rotatably supporting the shaft (2) and a resin housing member (6) holding the radial bearing (4), wherein the housing member (6) is formed of a material having a coefficient of heat contraction larger than that of a material used for the radial bearing (4). Where the radial thickness of the radial bearing (4) is m and the radial thickness of the housing body part of the housing member (6) covering the outer periphery of the radial bearing is n, the requirement of m > n is satisfied. Thus, effect by heat contraction in molding can be prevented from being applied to the radial bearing.
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