Spindle bearing device

Abstract

Abstract PURPOSE:To prevent a spindle from positional change due to change in temperature by urging a ball bearing against one inner wall of a bearing hole with an eccentric elastic annular body. CONSTITUTION:The outer ring of a ball bearing 6 for journalling a spindle 1 is fitted in an annular body 7. Since the inner diameter of the annular body 7 is eccentric, the outer ring bearing against the thick wall portion of the annular body 7 is separated from the inner wall of a bearing hole 4-2 and the outer ring bearing the thin wall portion of said body 7 bears against the inner wall of the bearing hole 4-2 to be held in the bearing hole 4-2. Even if the dimension of the bearing hole is changed by exothermic change in the interior, change in the atmospheric temperature or the like, the ball bearing is urged always against one inner wall of the bearing hole by the eccentric elastic annular body so that the spindle 1 journalled by this ball bearing does not change its position.

Inventors

• 👤 Koji Hagino
• 👤 萩野　弘司

Bibliographic Details