What are the reasons for the breakdown of the cage in the cycloidal bearing of a pinwheel cycloidal reducer? ? ?
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This post was last edited by shijianyanan on 2012-6-3 at 19:02. Our company is in the coal chemical industry; we use horizontal slag scoopers, and the reducers used in these devices suffer from the same problem – the cage of the cycloidal bearings often gets damaged. If the units operate 24 hours a day, the cages fail within a week at most, sometimes even within just a few days. It’s always the bearings that break down. Our reducers have two stages of cycloidal bearings, and it’s the side related to the motor that suffers the most damage. The first-stage cycloidal bearing is of type RN219, with a copper cage. Eventually one of the reducers broke down as well, but the same problem arose shortly after that. Could someone please give us some advice? ? ? ?
If there were no problems for a long time and the issue only started appearing after the bearing was damaged, with the cage of the cycloidal bearing often deteriorating, it is possible that the bearing housing or shaft is worn out, the assembly clearance is too large, or there is a problem with the quality of the bearing. In such cases, it is recommended to carry out major repairs or replace the bearing with a new one.
1. Is there a problem with the lubrication of the bearings? 2. Are the fit dimensions between the bearing housing hole and the bearings too large or too small? 3. Is the vibration at the motor’s input end excessive, or is there a large deviation in the alignment of the couplings?