| 摘要 |
PURPOSE: A rotating axis device for improving lubrication of a bearing is provided to extend endurance life by improving lubricating performance. CONSTITUTION: A rotating axis(1) is supported by bearings(2,3) press-fitted to a housing(4), so as to rotate. Grease for supplying to the bearings is accommodated in the space(5) for accommodation of grease formed in the housing. The rotating axis has two symmetric spiral grooves(7,8) feeding the grease to the bearings of both sides when the rotating axis is rotating forward. The middle of the rotating axis forms taper bodies(9,10) having bigger diameter than the diameter of both bearings side to improve the feeding efficiency of grease by the spiral grooves. If the rotating axis rotates the two grooves transfer the grease from the central part to the bearings. Therefore sufficient feeding of grease lubricates the bearings.
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