2. The bearing on the non-drive side must be disassembled first, then connected with Rama by long arm connection method, and the alignment is adjusted so that the shaft core and the center are in a straight line, and the center is rotated to give the shaft center proper pressure, and then the alignment is carried out under a certain pressure. This is the real alignment. If it is not in a straight line, loosen some Rama slightly and pad some pieces of paper in the offset direction. If you are afraid of scratching your flower drum, you can also put some cloth on it. After my test, Rama lost little on the lacquer surface of the flower drum.
3. Turn Rama slowly, and then pay attention to whether the shaft and the top are on a horizontal line.
4. The removal method of the bearing on the drive side is the same as that on the non-drive side, but it should be noted that the removed bearing is still placed inside for stability.