Deep groove ball bearing installation method

Deep groove ball bearing installation method 1: press fit: the inner ring of the bearing and the shaft are tightly fitted, and the outer ring and the housing hole are loosely fitted, the bearing can be pressed on the shaft first with a press, and then the shaft together with the bearing Put them into the bearing seat hole together. When pressing, place a soft metal assembly sleeve (copper or mild steel) on the end face of the bearing inner ring. The outer ring of the bearing is tightly fitted with the bearing seat hole, and the inner ring and the shaft are When the fit is loose, the bearing can be pressed into the bearing seat hole first. At this time, the outer diameter of the matching tube should be slightly smaller than the diameter of the seat hole. If the bearing ring is tightly fitted with the shaft and the seat hole, install the inner ring and The outer ring should be pressed into the shaft and the seat hole at the same time, and the structure of the assembly sleeve should be able to press the end faces of the inner ring and the outer ring of the bearing at the same time.
Deep groove ball bearing installation method 2: heating fit: by heating the bearing or bearing housing, using thermal expansion to change the tight fit into a loose fit installation method. It is a common and labor-saving installation method. This method is suitable for large interference For the installation of the bearing, put the bearing or the ring of the separable bearing into the oil tank and heat it evenly at 80-100°C before hot fitting, then take it out of the oil and install it on the shaft as soon as possible, in order to prevent the end face of the inner ring and the shaft shoulder after cooling The fit is not tight, and the bearing can be tightened axially after cooling. When the outer ring of the bearing is tightly matched with the bearing seat made of light metal, the heat-fitting method of heating the bearing seat can be used to avoid the mating surface from being scratched. When using the oil tank to heat the bearing, there should be a grid at a certain distance from the bottom of the tank, or the bearing should be hung with a hook. The bearing should not 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°C to prevent the tempering effect and reduce the hardness of the ferrule.