How to maintain angular contact ball bearings

1. When the bearing is running for a certain period of time (or maintenance period), remove all the bearings;

2. Soak the bearings with clean diesel or kerosene. If there are technical conditions, it is best to open the sealing cover to clean;

3. Dry the cleaning oil after cleaning, and check the appearance for damage;

4. Use a wooden rod with a diameter of about 150 mm and an angular contact ball bearing with the same inner diameter (preferably a hollow tube), and fix one bearing at one end;

5. While rotating the bearing by hand, the other end of the wooden rod (wood tube) is placed on the ear or the audio amplifier microphone to hear the bearing rotation noise;

6. After the bearing is fixed, the wooden rod is moved laterally to check whether the bearing has looseness or wear;

7. Bearings that are loose, have excessive rotational noise, and have serious defects should be eliminated, and replaced by the same model;

8. Take a bucket and melt the appropriate amount of grease (high-quality yellow dry oil) with a simmer (not overheated). Place the tested bearing into the bucket and soak it in a bubble-free overflow. Remove the bearing before the grease cools. The residual grease is small. After the grease is cooled, the angular contact ball bearing is taken out, and the amount of residual grease is large, and the amount of grease remaining is determined as needed;

9. Wipe the grease on the outside of the bearing with a soft cloth or toilet paper, and assemble the bearing to the pulley as it is, and the maintenance work will be finished.
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Thrust bearing characteristics and installation precautions

The thrust ball bearing is a separate type of bearing, and the shaft ring and the seat ring can be separated from the components of the cage and the steel ball. The shaft ring is a ferrule that cooperates with the shaft. The seat ring is a ferrule that cooperates with the bearing housing hole, and there is a gap between the shaft; the thrust ball bearing can only bear the axial load, and the one-way thrust ball bearing can only bear Axial load in one direction, two-way thrust ball bearings can withstand axial loads in two directions; thrust ball bearings can not limit the radial displacement of the shaft, the limit speed is very low, one-way thrust ball bearings can limit one of the shaft and the housing Axial displacement of the direction, the two-way bearing can limit the axial displacement in both directions.

Thrust roller bearings are used to support axial and radial combined loads with axial loads, but radial loads must not exceed 55% of axial loads. Compared with other thrust roller bearings, this type of bearing has a low coefficient of friction, high speed and self-aligning performance.

Understand the characteristics of the thrust bearing, and then introduce the precautions for the installation of the thrust bearing:

1. Distinguish the tight ring and loose ring of the bearing (according to the inner diameter of the bearing, the hole diameter difference is O.1~O.5mm).

2. Distinguish the static parts of the mechanism (ie, parts that do not move, mainly refers to the assembly).

3. In any case, the loose ring of the bearing should always rest on the end face of the stationary part.
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