SKF bearing installation key steps in detail

Friends all know that frequently used SKF bearing, SKF bearing installation of the stand or fall of it or not, will influence the accuracy of SKF bearing, the life and performance. Therefore, please study fully SKF bearing installation, namely, please follow the steps including the following items for SKF bearing installation. ( A) , cleaning SKF bearing grease lubrication and related parts for SKF bearing and oil seal or dust cover on both sides, sealing ring SKF bearing without cleaning before installation. ( 2) , check the size and finishing of the parts ( 3) SKF bearing, installation method of installation should be according to the structure of SKF bearing, size and SKF bearing components with the nature, the pressure should be directly in the tight fit on the ring width, shall not be passed on roller pressure, SKF bearing installation commonly adopt the following methods: A. Force fit SKF bearing inner ring and shaft tight fit, outer ring and SKF bearing hole is a loose fit, available first SKF bearing press will be pressed on the shaft, then put the shaft SKF bearing hole along with SKF bearing load, when pressed on the SKF bearing inner ring end face, cushion the assembling casing made of a soft metal materials ( Copper or mild steel) , the inner diameter of the casing assembly should be slightly larger than the diameter of a journal, outside diameter should be smaller than SKF bearing inner ring guard slightly, so as to avoid pressure in keeping the frame. SKF bearing outer ring tight fit with the SKF bearing holes, inner ring and the shaft is a loose fit, SKF bearing can be pressed into the first SKF bearing hole, then assembling casing diameter should be slightly less than the diameter of a hole. If the SKF bearing ring and shaft and hole is a tight fit, install indoor ring and outer ring to pressure into the shaft and hole, at the same time assembling casing structure should be able to at the same time so SKF bearing inner ring and outer ring end face. B。 Heating with heating by SKF bearing or SKF bearing seat, by using thermal expansion will fit into a loose fit installation method. Installation method is a kind of common and energy saving. This method is suitable for interference quantity larger SKF bearing installation, hot charging before the SKF bearing type or separable SKF bearing ring into the fuel tank 80 - uniform heat 100 ℃, and then loaded on the shaft, as soon as possible out of the oil to prevent inner ring after cooling end face and shoulder joint is not tight, SKF bearing after cooling can be axial tighten again. SKF bearing outer ring and light metal SKF bearing seat tight fit, by using the hot charging method of heating SKF bearing, can avoid the mating surface scratch. Tank heating SKF bearing, should be at a certain distance from the bottom of a mesh, or hanging hooks in the SKF bearing, SKF bearing cannot be on the bottom, in case of heavy impurities into the SKF 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. C。 Cone hole installation of SKF bearing cone hole can be directly installed in a shaft with taper bearing neck, or load set set of the cone, and the withdrawal of the tightness of cooperate, SKF bearing radial clearance reduction is available to measure, therefore, before installation should be measured SKF bearing radial clearance, the installation process should often measure the clearance in order to meet the need of clearance reduction is, commonly used while installing lock nut installation, also can adopt the method of heating installation. D。 Thrust of the installation of SKF bearing thrust bearing with the thorough and axis is commonly transition fit, with SKF bearing hole of the seat is commonly clearance fit, so the SKF bearing is easy to install, two-way thrust SKF bearing axial spring should be fixed on the shaft, in order to prevent the relative to the axis of rotation. SKF bearing installation method, usually is the situation of the axis of rotation, so with the inner ring and shaft for win, SKF bearing outer ring for clearance fit with SKF bearing chamber.