For tapered bore bearings, the inner ring is always installed with an interference fit. Unlike cylindrical bore bearings, the interference of tapered bore bearings is not determined by the selected shaft fit tolerance, but by the advance distance of the bearing on the tapered journal, bushing or withdrawal sleeve. The radial internal clearance of the bearing decreases as the bearing advances on the tapered journal. By measuring the reduction, the degree of interference and the tightness of the fit can be determined. When installing self-aligning ball bearings, CARB toroidal roller bearings, spherical roller timken bearings and high-precision cylindrical roller bearings with tapered bores, determine the radial internal clearance reduction or the axial The advancing distance is used as a measure of the amount of interference. Guidelines for clearance reduction and axial advance distance are found in the relevant product section. Small Bearings Small bearings can be pushed onto a tapered base using a nut. In the case of a bushing, a socket nut is used. Small withdrawal sleeves can be pushed into the bearing bore with a nut. Nuts can be tightened with a hook wrench or an air wrench. Before starting installation, a little oil should be applied to the surfaces of the journal and sleeve. Medium and Large Bearings Large timken bearings require significantly increased mounting force and should use hydraulic nuts and/or oil injection. Both of the above methods can significantly simplify the installation process. The oil filling equipment required to operate the hydraulic nut and use the oil filling method is supplied. Detailed information on these products can be found in the relevant section in the online catalog 'Maintenance and Lubrication Products'. When using the hydraulic nut to install the bearing, it must be positioned on the threaded part of the journal or the thread of the sleeve, so that the annular piston abuts against the inner ring of the bearing, the nut on the shaft or the retaining ring installed on the shaft end. The oil is pressed into the hydraulic nut by the oil pump to move the piston in the axial direction with the force required for safe and precise installation. Using the hydraulic nut, install the spherical roller bearing to the oil injection method, the oil is injected between the timken bearing and the journal under high pressure to form an oil film. This oil film separates the mating surfaces and significantly reduces the friction between the mating surfaces. This method is generally used when mounting bearings directly onto tapered journals, but it is also used to mount bearings on adapter and push sleeves specially prepared for the oil injection method. The oil pump or oil injector generates the necessary pressure to inject oil between the mating surfaces through the grooves and oil distribution channels on the shaft or sleeve. When designing the bearing layout, consideration must be given to arranging the necessary grooves and channels on the shaft. The spherical roller bearing is installed on the withdrawal sleeve with oil groove, and the withdrawal sleeve is pressed into the bearing hole by injecting oil into the mating surface and tightening the screws in sequence. 【China Bearing Network】