First, wash bearings and related parts
To have grease lubricated bearings and oil seals or shields on both sides with the front seal bearing installation without washing.

Second, the size and finishing Check the related parts

Third, the installation method
Bearings should be installed according to the bearing structure with nature, size, and bearing components, depending on the pressure should be directly added to the end surface of the ring was a tight fit can not be transmitted through the rolling pressure, bearing installation generally use the following method:

a. press-fit
Bearing inner ring and the shaft so that a tight fit, the outer ring with the bearing hole is relatively loose fit, can be pressed press the bearing on the shaft, then along the shaft along with bearing load bearing hole, when the press-fit in end surface of the bearing inner ring, a soft metal material of the pad assembly sleeve (copper or soft steel), the inner diameter of the sleeve assembly should be slightly larger than the journal diameter, outer diameter should be slightly smaller in diameter than the bearing inner wall, in order to avoid pressure on the retainer. Bearing outer ring and the bearing hole tight fit, when the inner ring and the shaft is relatively loose fit, the bearing can be pressed into the bearing hole, then assemble the outer diameter of the sleeve seat should be slightly smaller than the diameter of the hole. If the bearing ring and the housing bore and shaft are a tight fit, install interior ring and the outer ring to be simultaneously pressed into the shaft and housing bore, the assembly casing structure should be able to simultaneously charge the end face of tight bearing inner and outer rings.

b. heating with
By heating bearings or bearing, the use of thermal expansion close fit into a song with the installation method. It is a common and labor-saving method of installation. This method is suitable for a large amount of interference bearing installation, before the thermal loading the bearing or separable bearing rings into the tank uniform heating 80-100 ℃, then remove from the oil loaded onto the shaft as quickly as possible in order to After cooling to prevent the inner face and shaft shoulder fit is not tight, it can then tighten the rear bearing axial cooling. When the bearing outer ring and light metal bearing tight fit, the use of heating equipment bearing thermal method, can be avoided with the surface by scratches. When the tank is heated by bearing a certain distance away from the bottom of the gate should have a net, or with a hook hanging bearings, can not be put on the bottom to prevent impurities entering the bearing Shen or uneven heating, the tank must have a thermometer, strict control of the oil temperature must not exceed 100 ℃, in order to prevent tempering effect, reduce the hardness of the rings.

c. a tapered bore bearing installation
Tapered bore bearings can be mounted directly on the tapered journal or adapter sleeve and loading the sleeve tapered withdrawal, the tightness of which is available with the bearing radial clearance reduction amount to measure, therefore, the installation should measuring bearing radial clearance, the installation process should be measured regularly play in order to achieve the required clearance to reduce the amount of date, when you install the general locknut installation, heating installation methods may also be used.

d. thrust bearing installation

With the thrust bearing and shaft is generally comprehensive transition fit, with the race and the bearing hole is generally clearance fit, so this bearing is easier to install, bi-axial thrust bearing spring should be fixed on the shaft to prevent relative the shaft is rotated. Bearing installation method, under normal circumstances is mostly the case axis, with the axis of the inner ring and therefore too much to win with, with the bearing outer ring and bearing housing clearance fit.