Installation Of Bearings

First, clean the bearing and related parts
For bearings that have been greased and with oil seals or dustproof caps on both sides, there is no need to clean the sealing ring bearings before installation.
Two, check the size of the relevant parts and finishing conditions
Three, installation method
The installation of bearings should be determined according to the bearing structure, size and matching nature of bearing parts, and the pressure should be direct
It is added to the end face of the tightly matched ring, and the pressure shall not be transmitted through the rolling body. The following methods are generally used for bearing installation:
1. Pressing fit
Bearing inner ring and shaft tight fit, outer ring and bearing hole is a loose fit, press the bearing to be pressed on the shaft are available, and then put the shaft together with the bearing load bearing hole, when pressed on the bearing inner ring end face, cushion the assembling casing made of a soft metal material (copper or mild steel), the inner diameter of the casing assembly should be slightly larger than the diameter of a journal, outside diameter than the bearing inner ring guard slightly smaller, in order to avoid pressure in keeping the frame.The outer ring of the bearing is tightly matched with the bearing seat hole. When the inner ring and the shaft are loosely matched, the bearing can be pressed into the bearing seat hole first. At this time, the outer diameter of the assembly sleeve should be slightly less than the diameter of the seat hole.If the bearing ring is tightly matched with the shaft and the seat hole, the inner ring and the outer ring should be pressed into the shaft and the seat hole at the same time, and the structure of the assembly sleeve should be able to tighten the inner ring and the bearing at the same time end face of the outer ring.

2. Heating match
An installation method in which a tight fit is transformed into a loose fit by thermal expansion by heating a bearing or a bearing seat.It is a common and labor-saving installation method.This method is suitable for the installation of larger bearings in interference. Before hot loading, put the rings of bearings or separable bearings into the oil tank for uniform heating of 80-100C, and then take them out of the oil and install them on the shaft as soon as possible. In order to prevent the end face of the inner ring and the shaft shoulder from fitting tightly after cooling, the bearing can be axially fastened again after cooling.When the outer ring of the bearing is tightly matched with the bearing seat made of light metal, the hot charging method of heating the bearing seat is adopted to avoid the scratch on the matching surface.When heating the bearing with the oil tank, there should be a net shelter at a certain distance from the bottom of the box, or the bearing should be hung with a hook. The bearing should not be placed on the bottom of the box to prevent impurities from entering the bearing or uneven heating. There must be a thermometer in the oil tank, and the oil temperature should be strictly controlled not to exceed 100C to prevent the tempering effect and the ring
The hardness is reduced.
3. Installation of tapered 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 cooperating with available bearing radial clearance decreased to scale, therefore, before installation shall be measured in the bearing radial clearance, the installation process should always measure children's clearance to achieve the required clearance in reducing, when installation - mounted with lock nut, also can adopt the method of heating installation.
4. Installation of thrust bearing
The balance between the thrust bearing and the shaft is generally the transition fit, and the balance between the seat ring and the bearing seat hole is generally the clearance
Therefore, this kind of bearing is easier to install. The central shaft spring of the two-way thrust bearing should be fixed on the shaft to prevent rotation relative to the shaft.
The installation method of bearing, - under normal circumstances is the case of shaft rotation in the majority, so the inner ring and shaft fit for overmatch, bearing outer ring and bearing chamber fit for clearance fit.
Last,inspection of bearings after installation
Supplier:BMB bearings
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