Sand Washing Machine Motor Shaft Wear And Maintenance

The sand washing machine motor shaft is supported by the bearing, which is the part with heavy load and easy to wear.

Sand washing machine operation inspection

When the rolling bearing is short of oil, you can hear a “grinding” sound. If you hear an intermittent “crackling” sound, it may be that the bearing steel ring is broken. When there is sand or other debris mixed in the bearing or the bearing parts are slightly worn, a slight noise will be generated. After disassembly, check whether the bearing rolling elements, inner and outer steel rings are damaged, rusted, or have scars. Then pinch the inner ring of the bearing with your hand and make the bearing flat. Use your other hand to push the outer steel ring hard. If the bearing is good, the outer steel ring should rotate smoothly. There is no vibration or obvious jamming during rotation, and the outer steel ring does not retreat after stopping. Otherwise, it means that the bearing can no longer be used. Hold the outer ring with your left hand, pinch the inner steel ring with your right hand, and push it hard in all directions. If it feels very loose when pushed, it is seriously worn.

Shaft fault maintenance

1. Shaft bending: If the bending is not serious, it can be repaired by polishing the shaft neck and slip ring; if the bending exceeds 0.2mm, the shaft can be placed under a press and pressurized to correct the bending. The corrected shaft surface can be cut and polished on a lathe. If the bending is too large, a new shaft must be replaced.

2. Journal wear: When the journal wear is not serious, a layer of chrome can be plated on the journal and then ground to the required size. When the wear is more serious, it can be welded on the journal and then cut and polished on a lathe. If the journal wear is too severe, 2-3mm can be turned on the journal, and then a sleeve can be turned and put on the journal while it is hot, and then turned to the required size.