Do you know the material of plain bearing spherical?

1) Metal materials, such as bearing alloys, bronze, aluminum-based alloys, zinc-based alloys, etc.

plain bearing spherical: bearing alloys are also called white alloys, mainly alloys of tin, lead, antimony or other metals. Because of their good wear resistance, high plasticity, good running-in performance, good thermal conductivity and good resistance to glue and oil It has good adsorption, so it is suitable for heavy load and high speed. The strength of the bearing alloy is small and the price is more expensive. When used, it must be cast on bronze, steel belt or cast iron bearing bushes to form a thinner coating.

2) Porous metal materials (powder metallurgy materials)

Porous metal material: Porous metal is a kind of powder material. It has a porous structure. If it is immersed in lubricating oil, the micropores are filled with lubricating oil and become an oil-containing bearing with self-lubricating properties. Porous metal materials have low toughness and are only suitable for steady non-impact loads and medium and low speeds.

3) Non-metallic materials

plain bearing spherical plastics: Commonly used plain bearing spherical plastics include phenolic plastics, nylon, polytetrafluoroethylene, etc. Plastic bearings have greater compressive strength and wear resistance, and can be lubricated with oil and water. They also have self-lubricating properties, but have poor thermal conductivity.

When the plain bearing spherical is working, friction will occur due to the contact between the journal and the bearing bush, which will cause the surface to heat up, wear and even "seize". Therefore, when designing the bearing, the sliding bearing material with good anti-friction properties should be used to make the bearing bush, and a suitable lubricant And adopt a suitable supply method to improve the structure of the bearing to obtain thick film lubrication.

1. Corrosion of tile surface: Spectral analysis found that the concentration of non-ferrous metal elements is abnormal; there are many sub-micron wear particles of non-ferrous metal components in the spectrum; the moisture of lubricating oil exceeds the standard, and the acid value exceeds the standard.

2. Corrosion on the journal surface: Spectral analysis found that the concentration of iron is abnormal, there are many sub-micron particles of iron in the iron spectrum, and the moisture or acid value of the lubricant exceeds the standard.

3. Strain on the journal surface: there are iron-based cutting abrasive particles or black oxide particles in the iron spectrum, and the metal surface has a tempered color.

4. Fretting wear on the back of the tile: Spectral analysis found that the iron concentration is abnormal, there are many sub-micron wear particles of iron in the iron spectrum, and the lubricant moisture and acid value are abnormal.

5. Plain bearing spherical surface strain: cutting abrasive particles are found in the iron spectrum, and the abrasive particles are composed of non-ferrous metals.

6. Tile surface spalling: There are many large-size fatigue spalling alloy wear particles and layered abrasive particles found in the iron spectrum.

7. Plain bearing spherical burnt bush: There are more large-size alloy abrasive grains and ferrous metal oxides in the iron spectrum.

8. plain bearing spherical wear: Due to the metal properties of the shaft (high hardness, poor concession) and other reasons, it is easy to cause adhesion wear, abrasive wear, fatigue wear, fretting wear and other conditions.

Prevention of paint rust: Paint rust is characterized by a sealed motor. The motor sounds good at first, but after a period of storage, the motor becomes very abnormal sound, removing the severe rust of the bearing. Many manufacturers will be regarded as the problem of the front plain bearing spherical, the main problem is that the insulating paint volatile acid at a certain temperature, humidity, metal corrosion and protection, the formation of corrosive substances, channel sliding bearings cause corrosion damage.

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