| 摘要 |
<p>The inner ring 2 and the outer ring 3 of the roller bearing 1 as element are formed with silicate glass such as a high silicate glass, a soda-lime glass, alminosilicate glass, borosilicate glass and an alkali silicate glass, during its manufacturing processes a heat treatment is carried out for making the silicate glass polycrystalized and the thermal expansion coefficient of the inner ring 2 and the outer ring 3 diminished to prevent them from being changed minutely in dimension and the hardness and the strength of the rolling surfaces 2a, 3a increased to diminish the revolution vibration and the revolution noise due to the revolution vibration and prevent the impact due to miniaturization of the apparatus from being generated.
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