Bearing installation method


The installation of the bearing should be based on the bearing structure, size and bearing parts of the nature of the fit, the pressure should be directly added to the side of the ring with a tight fit, not through the rolling body to pass the pressure, bearing the general use of the following methods: fit
Bearing inner ring and the shaft to tight fit, the outer ring and bearing hole is more loose fit, the press can be used to press the bearing on the shaft, and then the shaft together with the bearing into the bearing hole, Bearing inner ring on the end, the pad of a soft metal material to do the assembly casing (copper or mild steel), the inner diameter of the fitting sleeve should be slightly larger than the journal diameter, diameter diameter should be slightly smaller than the bearing inner ring ribs Pressed on a cage. Bearing outer ring and the bearing hole in line with the inner ring and the shaft for the loose fit, the bearing can be pressed into the bearing hole, then the outer diameter of the assembly tube should be slightly smaller than the diameter of the seat hole. If the bearing ring and the shaft and the seat hole are tight fit, the installation of the inner and outer ring to press the shaft and seat hole at the same time, the structure of the casing should be able to tighten the bearing inner and outer ring end face.
B. Heating with
By heating the bearing or bearing, the use of thermal expansion will be tight fit into loose fit with the installation method. Is a common and laborious installation method. This method is suitable for the installation of large bearing capacity, hot before the bearing or separable bearing rings into the tank evenly heated 80-100 ℃, and then removed from the oil as soon as possible to the shaft, To prevent cooling after the inner end of the inner and shoulder fit is not tight, the bearing can be cooled after the axial tightening. Bearing outer ring and light metal bearing seat tightly, the use of heating the bearing seat of the hot method, to avoid the mating surface is subject to abrasions. When the bearing is heated by the tank, there shall be a grid at a distance from the bottom of the tank, or the bearing shall be hung with a hook. The bearing can not be placed on the bottom of the box to prevent the impurity from entering the bearing or uneven heating. The fuel tank must have a thermometer, Strictly control the oil temperature shall not exceed 100 ℃, in order to prevent the occurrence of tempering effect, so that the hardness of the ring to reduce.
C. Installation of tapered bore bearings
The tapered bore bearing can be mounted directly on a tapered journal, or on the conical surface of the adapter sleeve and withdrawal sleeve, with the degree of tightness that can be measured by the radial clearance reduction of the bearing. Therefore, Measure the radial clearance of the bearing, the installation process should always measure the clearance to achieve the required clearance to reduce the amount of the installation of the general use of lock nut installation, heating can also be used to install the method.
D. Thrust bearing installation
Thrust bearings with the shaft with the general cooperation with the transition, the seat ring and bearing hole with the gap is generally with the gap, so this bearing is easier to install, two-way thrust bearing shaft should be fixed on the shaft to prevent the relative Rotate on the axis. Bearing the installation method, under normal circumstances the shaft rotation of the majority of the situation, so the inner ring and the shaft with the win with the bearing outer ring and bearing room with the gap with the cooperation.