Installation Method of Deep groove ball bearing
2021-03-12
Deep groove ball bearing installation method 1: press fit
When the inner ring of the bearing fits tightly with the shaft, and the outer ring fits loosely with the bearing seat hole, a press machine can be used to press the bearing onto the shaft first, and then the shaft and the bearing together into the bearing seat hole. During the pressing, on the end face of the inner ring of the bearing, an assembly sleeve made of soft metal materials (copper or mild steel) is mounted.
Bearing outer ring and bearing seat hole are tightly matched. When the inner ring and shaft are loose, the bearing can be first pressed into the bearing seat hole. At this time, the outer diameter of the sleeve assembly should be slightly smaller than the diameter of the seat hole.
If the bearing ring is closely matched with the shaft and the seat hole, the inner ring and the outer ring shall be pressed into the shaft and the seat hole at the same time during installation. The structure of the sleeve assembly shall be able to tighten the end face of the inner ring and the outer ring at the same time.
Deep groove ball bearing installation method 2: heating match
A method of mounting a tight fit into a loose fit by heating a bearing or bearing seat and using thermal expansion.
Is a common and labor-saving: installation method.
This method is suitable for the installation of bearings with large interference. Before hot loading, the ring of the bearings or separable bearings is put into the oil tank and heated evenly at 80-100℃, and then removed from the oil and installed on the shaft as soon as possible. In order to prevent the end face of the inner ring from fitting tightly with the shaft shoulder after cooling, axial fastening can be carried out again after cooling.
When the bearing outer ring is tightly matched with the bearing seat made of light metal, the hot loading method of heating the bearing seat can avoid the abrasion of the mating surface.
Heating tank with bearing and should be at a certain distance from the bottom of a mesh, or hanging hooks in the bearings, bearing on the bottom, in case of heavy impurities into the bearing or uneven heating, fuel tank must have a thermometer, strictly control the oil temperature shall not exceed 100 ℃, in order to prevent the tempering effect, reduce the hardness of the ring.