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Timing view of bearings (5)
Source: China Bearing Network Time: 2013-04-20
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If the unshielded bearing is removed without being disassembled and can be viewed; remove it with a white spirit by applying a brush; then dry it with a lint-free cloth or blow it with compressed air. Dry (pay attention not to let the bearing assembly start to rotate).
Use a small mirror and a probe used by a similar dentist to view the track surface of the bearing, the holder and the beads. If the bearing is not damaged, it should be based on the smooth explanation provided by the original machine or on pages 204 to 247 of this book. The claim is fulfilled again.
It is not necessary to remove the bearing with the sealing cover or dustproof, only scrub the external appearance. If the bearing is damaged, it needs to be replaced. The replacement of the bearing during the timed protection period is far better than that due to the damage of the array. It’s more economical to lose it.
(3) The smoothness of the bearing 1. The smooth effect of the bearing has a significant effect on the fatigue life of the rolling bearing and the conflict, wear, temperature, oscillation, etc.; there is no normal smoothness; the bearing can not work. The reason for the bearing damage is marked; About 40% of bearing damage is related to poor smoothness. Therefore, the outstanding smoothness of the bearing is a useful way to reduce bearing conflict and wear. In addition, the bearing is smooth and has heat dissipation; rust, sealing, flat cushioning, etc. The effect of the bearing smoothness can be briefly explained as follows:
a. An oil film is formed between the two tumbling surfaces or the sliding outer surface that touch each other to separate the two outer surfaces; the collision and wear of the touch surface are reduced.
b. When the oil is smooth, especially when the circulating oil is smooth, the oil mist is smooth and the fuel injection is smooth; the smooth oil can take away most of the conflict heat inside the bearing; it has a useful heat dissipation effect.
c. When the grease is smooth, it can avoid foreign matter such as dust from entering the bearing;
d. Smoothing agents have the effect of avoiding metal corrosion.
e. The fatigue life of the extended bearing.
2, the smooth and oil-smooth comparison of the smooth bearing of the bearing is roughly divided into two types: grease smooth and oil smooth. In order to give full play to the function of the bearing; the important thing is to use the reduction and application intention; select the smooth method. Table 4-2 Shows the advantages and disadvantages of smooth grease and smooth oil.
3, grease smooth and smooth grease is a smoothing agent composed of base oil; thickener and additives. When selecting; should choose the grease that is very suitable for the bearing application conditions; because the trademark is not the same; there will be very much in performance Great difference; so in the time of selection; it is necessary to pay attention. The smooth grease commonly used in bearings is calcium-based smooth fat, sodium-based smooth fat, calcium-sodium smooth grease, lithium-based smooth fat, aluminum-based smooth fat and molybdenum disulfide smooth Fat and so on.
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