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Installation method of deep groove ball bearing

by:JNSN     2021-11-01
Deep groove ball bearings are the most widely used rolling bearings. The characteristics of deep groove ball bearings are high speed and low friction resistance. They are used in tractor gearboxes and automobiles. How to install the deep groove ball?

There are two installation methods for deep groove ball bearings, one is heating fitting method and the other is press fitting method. The purpose of both methods is to install deep groove ball bearings. The following is a brief introduction.

The heating fit method is an installation method that uses thermal expansion to transform a tight fit into a loose fit by heating the bearing seat or bearing. It is a commonly used and labor-saving installation method. This method is suitable for the installation of bearings with a large amount of interference. Put the bearing or separable bearing ring into the oil tank and heat it evenly by 80 degrees to 100 degrees before hot assembling, and then remove it from the oil and install it on the shaft as soon as possible. , In order to prevent the inner ring end face and the shaft shoulder from not fitting tightly after cooling, the bearing can be axially tightened after cooling. This can avoid scratches on the mating surface.

When heating the bearing with an oil tank, there should be a grid at a certain distance from the bottom of the box, or the bearing should be hung with a hook. The bearing cannot be placed on the bottom of the box to prevent impurities from entering the bearing or uneven heating. Thermometer, strictly control the oil temperature not to exceed one hundred degrees to prevent the occurrence of tempering effect and reduce the hardness of the ferrule.

Press-fitting method: The outer ring of the bearing is closely matched with the housing hole. When the inner ring and the shaft are loosely fitted, press the bearing into the housing hole first. At this time, the outer diameter of the assembly sleeve should be slightly smaller than the housing The diameter of the hole. The inner ring of the bearing is tightly fitted with the shaft. When the outer ring is loosely fitted with the bearing housing hole, the bearing can be press-fitted on the shaft with a press, and then the shaft and the bearing are installed in the bearing housing hole. On the end face of the ring, an assembling sleeve made of soft metal material is cushioned.

If the bearing ring is tightly fitted with the shaft and the housing hole, the inner ring and the outer ring should be pressed into the shaft and the housing hole at the same time during installation. The structure of the assembly sleeve should be able to compress the inner ring and the outer ring at the same time. The end face of the circle.

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