1. Loosen the bolts that secure the bearing housing. The German FAG bearings are removed from the shaft together with the housing. Note before the German FAG housing on the end of the shaft. The I-bearing bolts at the other end of the shaft should be loosened to prevent the bearings at both ends from being damaged by each other.
2. First loosen the locking screw on the eccentric sleeve of the German FAG bearing with an Allen key, then insert the small iron rod into the counterbore on the eccentric sleeve of the top cover and loosen the eccentric sleeve against the direction of rotation of the shaft.
Many people use improper installation methods in the installation of bearings, resulting in damage to German FAG bearings. So how do you install the bearings correctly? I hope everyone can understand the installation and disassembly of the bearing more comprehensively:
For clearance-fitted bearing rings, it is recommended to apply a thin layer of anti-creeping etchant on the mating surface to prevent frictional corrosion between the mating surfaces.
The 390000 series outer spherical bearing is used to fix the inner ring of the bearing and the shaft through an eccentric sleeve, and the hexagon socket screw on the eccentric sleeve is used for fastening. In the maintenance, many operators will not disassemble this German FAG bearing, so it is necessary to introduce the technical points and precautions for disassembling the 390000 series outer spherical bearing:
Proper installation is very important for the use of German FAG bearings. I hope that everyone can use the correct installation method in future use.
When installing, it can be selected according to its type and size, mechanical, heating or hydraulic. The force applied to the bearing during installation must never be transferred from one bearing ring to another German FAG bearing ring by rolling elements, otherwise the raceway may be damaged. However, under no circumstances can you directly hit the bearing ring, cage, rolling element or seal.
installation
3. Install the eccentric sleeve. Firstly, the eccentric bushing is placed on the eccentric step of the German FAG bearing inner sleeve, and the hand is screwed in the direction of the shaft. Then insert or hold the small iron rod against the counterbore on the eccentric sleeve. 1. Use a hammer to strike a small iron rod in the direction of rotation of the shaft. Install the eccentric sleeve securely and finally lock the socket head cap screws on the eccentric sleeve.
4. The bolts that fix the German FAG bearing housing should not be tightened first, so that the bearing housing can rotate in the bearing housing. Then fasten the bearing block bolts. Also install the other end bearing and seat on the same shaft, rotate the shaft a few turns, and let the German FAG bearing itself automatically find the position.
5. Apply lubricant to the bearing seat and bearing mating surface, and install the German FAG bearing into the bearing housing. Then the assembled bearing is placed on the shaft together with the German FAG bearing. Push to the desired location for installation.
6. Before installing the German FAG bearing on the shaft, the bearing pin of the bearing sleeve must be unplugged, and the surface of the journal should be smoothed and cleaned, and oiled on the journal to prevent rust and lubrication (allowing the bearing to rotate slightly on the shaft).
1. Clean the dust on the fan to avoid any dust entering the bearing during the installation process;
2. Remove the self-adhesive of the bearing seal and remove the bayonet pin on the shaft;
3. Wipe the residual oil in the bearing with a clean tissue or a soft cloth, and then wipe the shaft clean;
4, add a little butter in the bearing, the principle is to be more than not to avoid serious impact on the speed;
5. Cut the aluminum skin of the can to cut a round piece as the outer diameter of the bearing pin, and dig a small hole in the middle that can pass through the shaft, and pad it between the bearing and the bayonet. The distance that the small bearing moves axially and moves in parallel. If the gap is large, it is necessary to put a few thickening on the pad, so that the front and rear moving distance of the bearing is below 0.5mm;
6. Seal the oil seal, add a little butter, and finally put the fan back into the graphics card. Try connecting the power, you will find that the sound is much smaller, and this can be used for at least 2 years. But need to be reminded, although the sound is a little smaller, but because of the limited manual accuracy, the speed will drop a little.
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