How to install reducer gears
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The reducer gear couldn't be installed, so the boss asked me to hammer it in. I also polished it, used lubricant, and tried the key and keyway, but it just won't fit in place. I don't know if the method is right or not. Ask God for guidance
Before assembly, measure the diameter of the shaft and then assemble it empty! First, the interference between the shaft diameter and the hole is too large. Second, the keyway depth of the transmission key is too shallow, resulting in incomplete assembly during assembly. Depending on the gear material, you can consider hot loading.
Have you checked the size? Also, is the shaft bent? It is recommended not to knock hard. If the installation is not in place, it will also affect the matching size of the gear. I wonder if thermal installation can be considered?
Polish the hole between the motor shaft and the gear with sandpaper, then use an induction cooker to heat an oil basin, place the gear in the oil basin to heat, and finally install it.
Look at the size of the drawing to see if it should be hot installed. Don’t assemble wildly……
If you are sure there are no other problems, consider hot installation
If you really want to hammer, it is recommended to use a copper rod as the intermediate medium, so as not to damage the material surface of the gear.
Hot fitting is necessary, but the dimensions of the shaft and gear hole must be reviewed before hot fitting. Note that the height of the key shaft on the shaft is smaller than the height of the keyway and hole of the gear hole.
1. Hot assembly, 2. Remove all rust from the shaft and gears, and polish them with sandpaper.