What should I do if there is a problem with the temperature of thin-walled bearings?

Squash bearings are bearings in which the ratio of the inner diameter to the outer diameter is less than a specified value. The ratio of the outer diameter of the bearing to the inner diameter of the bearing is less than 1.25. It is called a thin-walled bearing. It can be seen that the outer diameter and inner diameter of the bearing are very small, and the bearing wall is very thin, so it is called a thin-walled ball bearing. Thin-walled bearings require high precision, have a simple structure, and are easy to use.

　　The main function of thin-walled bearings is to bear longitudinal loads, but when the radial play becomes larger, it will have a certain contact ball bearing performance. When the speed is high and the thrust ball bearing is not applicable, it can also be used to bear pure axial loads. Compared with other types of bearings of the same size, this type of bearing has a smaller friction coefficient and a higher limiting speed. But it is not impact-resistant and is not suitable for heavy loads. Thin-walled bearings are widely used in aerospace, astronomical instruments and clamping equipment, food processing equipment, machine tools, packaging equipment, medical equipment, radar, satellite communication equipment, textile machinery and robots.

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　　Generally speaking, the temperature of a thin-walled bearing can be inferred from the temperature outside the bearing chamber. It would be more appropriate if the temperature of the outer ring of a thin-walled bearing could be directly measured using the oil hole.

　　For heavy loads, low-permeability grease should be selected to work under high pressure. In addition to low permeability, the grease should also have high film strength and high-pressure performance.

　　Corresponding sealing devices are installed at both ends of the bearing. Let us understand the impact of the sealing devices on thin-walled bearings.

1. Keep the grease (oil) in the thin-walled bearing from being lost during use to ensure that the bearing is in a lubricated state;

　　2. Prevent dust or harmful gases outside the thin-walled bearing from entering the bearing cavity to prevent damageBearings.

　　The sealing structures of sealing rings are varied and the sealing effects are also different. If there is a gap between the sealing ring and the shaft, it is called non-contact sealing. The smaller the gap, the better the sealing effect, but the smaller the allowable shaft speed. If there is no gap between the sealing ring and the shaft, it is called contact sealing. The larger the contact area of ​​the sealing ring contact lip, the better the sealing effect. However, the smaller the allowable speed of the thin-walled bearing, and vice versa. The main research content of sealing technology is to research and develop corresponding sealing devices suitable for different working conditions, as well as the compatibility of sealing ring materials and corresponding greases.