Reasons for wear of the bearing raceway on the inner wall of the cycloidal pin wheel in the reduction gearbox

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This post was last edited by small pad on 2020-9-2 at 11:10. As shown in the image, the inner wall of the cycloidal pin wheel in a regular cycloidal pin wheel reducer (the ring-shaped area, which functions similarly to the outer ring of a bearing) is severely worn; there are basically no issues with other parts. So the question is, what is the cause of wear in this area? If there is no lubricant, the oil level required at the bearing of the input shaft that needs lubrication in the fuel tank should be higher than that at the bearings that are currently worn out. If there is a lack of lubricant, those bearings should also be worn, but the bearings in this area are functioning properly, and theoretically, the areas that are currently worn out are not under heavy load. Therefore, the wear assessment at this location is due to the poor quality of the manufacturer’s cycloidal wheel material.