| 摘要 |
PURPOSE:To prevent the occurrence of axial lost motion in a rotary shaft, by installing a spring, pressing both inner rings in a direction separating from each other, interposingly between these rings of two bearings installed in the axial direction in line. CONSTITUTION:Inside a bearing cylinder 1, there are provided with two ball bearings 14 and 19 installed in an axial direction in line, and a rotary shaft is supported by both these ball bearings 14 and 19. And, a spring 18, pressing both inner rings 14b and 19b in a direction separating from each other, is installed interposingly between these inner rings 14b and 19b of both ball bearings 14 and 19. Therefore, since these inner rings 14b and 19b of both these bearings 14 and 19 are separate from each other in the axial direction at the maximum, axial lost motion to be produced between these balls and inner and outer rings is eliminated.
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