Deep Groove Ball Bearing Installation Method
Published:2020-12-10 00:10:50    Text Size:【BIG】【MEDIUM】【SMALL

1. Method 1: Press-fit

The inner ring of the bearing and the shaft are tightly fitted. When the outer ring and the bearing seat hole are loosely fitted, the bearing can be press-fitted on the pole with a press, and then the shaft and the bearing are inserted into the bearing seat hole. On the end face of the bearing inner ring, a soft metal material assembly sleeve (copper or mild steel) is cushioned. The outer bearing ring is tightly fitted with the bearing seat hole. When the inner circle and the shaft are loosely fitted, the bearing can be pressed into the bearing first. In the seat hole, the outer diameter of the mounting sleeve should be slightly smaller than the width of the seat hole. If the bearing ring is tightly fitted with the shaft and the seat hole, the inner and outer rings must be pressed into the shaft and the seat hole at the same time. The structure of the mounting sleeve should be able to tighten the end faces of the bearing inner ring and outer ring at the same time.

2. Method 2: Heating

By heating the bearing or bearing seat, the thermal expansion is used to convert the tight fit into a loose fit. It is a commonly used and labor-saving installation method. This method is suitable for the installation of bearings with a large interference amount. The ferrule of the separable bearing is put into the oil tank and heated evenly at 80-100 ℃, and then it is taken out of the oil and installed on the shaft as soon as possible. Axial tightening. When the outer bearing ring is tightly matched with a light metal bearing seat, a hot mounting method using a heated bearing seat can be used to prevent the mating surface from being scratched. When heating the bearing with an oil tank, a grid should be placed at a certain distance from the bottom of the tank, or the bearing should be hung with a hook. The bearing cannot be placed on the bottom of the tank to prevent impurities from entering the bearing or uneven heating. There must be a thermometer in the tank. Strictly control the oil temperature not to exceed 100 ℃ to prevent the tempering effect and reduce the hardness of the ferrule.


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