The installation of IKO bearing adjustment method

Unlike other circular aperture to the bearings, single row angular contact ball bearings and tapered roller bearing internal clearance, only in a bearing for another bearing adjustment can be established. Usually these IKO bearings pairing is back to back or face to face, one of the bearing ring for axial displacement, until the selected clearance or preload is reached. The choice of clearance or preload, depends on the layout of bearing performance and the requirement of operation condition. Details about the bearing preload, see 'bearing preload control' section. Therefore, the following Suggestions only involves the angular contact ball bearings and tapered roller bearings bearing internal clearance adjustment layout. When installation should achieve the appropriate clearance value, according to the working load and temperature of bearing condition to determine. According to the size and layout of the bearing, shaft and bearing box manufacturing materials, and the distance between two bearings, the initial clearance when installation in the actual operation may be smaller or bigger. Inside and outside the circle, for example, the temperature difference of thermal expansion will cause the operation of the middle gap narrowed, initial clearance must be quite big, so to avoid deformation of the bearing and its adverse consequences. Due to angular contact ball bearings and tapered roller bearing radial and axial internal clearance there is a definite relationship between, so, you only need to specify a numeric value. Usually specify the axial internal clearance. Can then be generated by the following methods from zero clearance status of the specified value: loosen or tighten the nut on the shaft rod or body part of screw shaft hole, or in a IKO bearing ring and its bearing insert calibration between the gasket or gasket. Used to adjust the clearance with clearance measurement set practical method, depending on the amount of the number of bearings to install. For example, there is a kind of method is to use in a dial indicator on the wheel hub, check the wheel hub bearing set the layout of the axial clearance. Importantly, taper roller bearings in adjusting and measuring clearance, the rotating shaft and bearing box to each in a different direction for weeks, to ensure that the ball end with the guide flange on the inner ring with the proper contact. If the contact is undeserved, measurement result is not accurate, can't achieve the goal of expected adjustment bearing. For bearing cone bearing inner ring installation always USES the interference fit. Unlike cylindrical hole bearing, cone bearing interference level is determined by the selected axis fit tolerance, but by the bearing in the cone shaft and shaft sleeve or withdrawal of the forward distance on the decision. Bearing the radial internal clearance as bearing on the cone shaft neck and narrow. By measuring the decrease value, the interference which can determine the degree of tightness and cooperate. Install the self-aligning ball bearing, toroidal roller bearing, spherical roller bearings and tapered hole of high precision cylindrical roller bearing, to determine the radial internal clearance decreased value or cone base on axial forward distance, measure the amount of interference. Clearance decreased value and axial forward distance instruction, see related products. Small bearing small bearing can use nut, to advance to the cone base. In the case of the collar, then use the sleeve nut. Small sleeve nut available back into the bearing hole. Available to hook spanner or pneumatic wrench and tighten the screw as well. Before installation, should be on the surface of shaft and sleeve slightly a little oil. The installation of needed for large and medium-sized bearing large bearing force increased significantly, and should use the hydraulic nut and/or filling method. The above two methods can significantly simplify the process of installation. Operating hydraulic nut and filling equipment for the oil injection method is used, there is supply. Detailed information about these products, see the line record the relevant part of the 'maintenance and lubrication products'. When using hydraulic nut IKO bearing installation, it must be positioned in the thread section of the journal or the sleeve on the thread of the ring piston abuts on the shaft of bearing inner ring, nut or retaining ring on the shaft end. Through the pump oil into the hydraulic nut to safe and accurate force installation, move upward in axial piston. Using hydraulic nut, spherical roller bearings installed in the oil injection method, oil injection under high pressure bearing and shaft neck, forming a layer of oil film. This layer of oil film split mating surface, significantly reduce the friction between the mating surface. In the bearing directly installed to the cone axis neck, generally in this way, but also used in the designed for filling method set set and shirk set installed on the bearing. Oil pump or the necessary pressure lubricator, the groove on the shaft or sleeve and oil channel, the oil injection between mating surface. Bearing design layout, must consider necessary groove is arranged in the shaft and the channel. Spherical roller bearing installed on the grease groove of withdrawal, with the oil into the matching surface, and, in turn, tighten the screws, to press the withdrawal sleeve into the bearing hole.