After the installation and installing FAG Bearing Inspection

1: fag bearing installation:
1, cleaning bearings and related parts
Has been greased on both sides with bearings and oil seals or dust cover, seal bearings before installation without washing.
2, Installation
Bearing installation should be based on bearing structure, size and bearing components with the nature of the pressure should be directly added to the tight end with the ring surface was not passed through the rolling pressure, bearing installation methods commonly used are as follows:
a. indentation with
Bearing inner ring to tight fit with the shaft, the outer ring and bearing with the hole is loose, the free press will be installed in the shaft bearings be pressed and then shaft with bearings into bearing with the hole, press fit when bearing inner ring side face, a soft pad assembly casing made of metal material (copper or soft steel), the assembly of casing diameter should be slightly larger than the journal diameter, diameter diameter should be slightly smaller than the bearing inner ring ribs, so as not to pressure in the cage. Bearing outer ring and bearing hole tight fit, inner ring and loose with the axis, can be pressed into the bearing seat bearing the first hole, when the casing assembly seat hole diameter should be slightly smaller than the diameter.
If the bearing rings and the shaft and seat are tight with the hole, the installation of interior circle and outer circle to the same time press into the hole axis and the seat, the assembly structure of the casing should be able to charge while tight end bearing inner and outer ring.
b. heating with
Bearing or bearing by heating, using thermal expansion will be tight fit into a song with the installation. Is a common and labor-saving installation method. This method is suitable for large amount of interference bearing installation, hot charging before or separable type bearings bearing rings into the fuel tank in the uniform heating 80-100 ℃, and then remove from the oil installation as soon as possible to the axis, as After cooling to prevent the inner end and shaft shoulder fit is not tight, the bearings can be cooled further axial fastening. Bearing outer ring and the light metal bearing tight fit, the use of heating and hot charging method of the bearing can be avoided with the surface by abrasion. When heating bearings with a fuel tank,
A certain distance away from the bottom of gate should be a web, or hanging with a hook bearing, bearing into the bottom of the can to prevent Shen impurities into the bearing or uneven heating, the tank must have a thermometer, and strictly control the oil temperature must not exceed 100 ℃, in order to prevent tempering effect, so that rings the hardness decreased.
2: fag bearing installation testing:
Fag bearings installed, they should test ring and shaft centerline axis verticality. Method is to dial gauge fixed on the end of shell to head contact table bearing axis in the rotating bearing ring raceway on top, side observation dial gauge pointer, if the pointer deflection, indicating ring and shaft centerline axis is not vertical. Tank shell hole deeper, may also lengthen the micrometer head with a test.
fag bearings installed correctly, its seat that automatically adapts to the rolling ball, to ensure that rolling circle in the upper and lower raceway. If installed backwards, bearing not only does not work correctly, and each side will be met with severe wear. As the shaft ring and seat ring and the difference is not very clear, the assembly to be careful not to mistake. In addition, the thrust bearing and bearing seat hole should be left between the 0.2-0.5mm gap, to compensate for machining, installation errors caused by inaccurate, when in operation bearing ring center bias, this gap to ensure its automatic adjustment, avoid touching the friction, so that normal operation. Otherwise, it will cause severe damage bearings.

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