Stainless steel long shaft sleeve for vehicle

Function: 1. In moving parts, the wear of the parts is caused by long-term friction. When the gap between the important official and the hole is worn to a certain extent, the parts must be replaced. Therefore, designers choose materials with lower hardness and better wear resistance as shaft sleeves or bushings during design, which can reduce wear of the shaft and seat. When the shaft sleeve or bushing is worn to a certain extent, it can be replaced, which can save the cost of replacing the shaft or seat. Generally speaking, the bushing and valve seat use an interference fit. However, the clearance fit with the shaft can only extend the service life, because wear and tear cannot be avoided anyway, and shaft parts are relatively easy to process. Some new designers do not like this design and think it increases manufacturing costs. However, after a period of use, such modifications are still needed for maintenance. However, the reason why modifications can easily reduce the accuracy of the equipment is simple. Secondary processing cannot guarantee the position of the center of the seat hole.

In some places where the rotation speed is low, the radial load is large, and the clearance requirements are high (such as camshafts), rice is used instead of rolling bearings (in fact, the bushing can be regarded as a sliding bearing). This material requires low hardness and wear resistance. After the inner hole of the shaft sleeve is polished and smoothed, the matching accuracy can be very high. There must be an oil coffin for lubricating oil on the inner wall. The lubrication of the shaft sleeve is very important. If it is dry ground, the shaft and bushing will go very quickly. In order to save material, the wall thickness of the bushing is designed according to the axial load required by the bearing.

Generally, cast copper and bearing alloy materials are used. Bushings can be divided into open and non-open, depending on the needs of the structure. The bushing generally cannot bear axial load, or can only bear small axial load. Or thrust bearing. The shaft is usually round.

Bushing sleeves are often used as liners. Shafts can come in various shapes, as can bushings. The sleeve can be anti-corrosion with rice to eliminate assembly gaps, etc. And the materials used are the same.

The bushing generally plays an axial positioning role, and the end is exposed to compressive stress and comes into contact with gear bearings and other parts. Sometimes the shaft comes into contact with sealing rings, etc.
6.不适用于速度高、长度大的场合。Not suitable for occasions with high speed and large length.

Shaft sleeves can have different uses in different situations. It can be positioned axially, which can reduce wear and vibration, and can also be used to isolate the shaft from harmful media, thereby extending the life and durability of the shaft.

1. Classification of stainless steel shaft sleeves:

2. 1. 304 stainless steel bushing

3. 304 stainless steel bushings are the most common type and are commonly used in bearings, gears, mechanical transmission parts, etc. It has excellent corrosion resistance and high temperature resistance, but low strength, and is often used in some small and medium-sized mechanical equipment.

4. 2. 316 stainless steel bushing

5. 316 stainless steel bushings have stronger corrosion resistance and can withstand the corrosion of some strong acid and alkali media. They are often used in marine equipment, chemical equipment, food processing equipment and other occasions that need to withstand strong acid and alkali media.

6. 3. 420 stainless steel shaft sleeve 420 stainless steel shaft sleeve is a stainless steel material with high hardness. It is often used in power tools, auto parts and other occasions that need to withstand high strength and wear.

7. 4. 430 stainless steel bushing

8. The price of 430 stainless steel bushings is relatively low and is often used in some low-end mechanical equipment, household equipment, etc., but its corrosion resistance and strength are low.

The relationship between shaft sleeve and stainless steel:

The bushing is a component highly respected by mechanical engineers. It plays an important role in mechanical transmission, light-load rotation and high-speed operation. Stainless steel is a kind of steel with corrosion resistance, high temperature resistance and other characteristics, and can work in harsh environments. Therefore, stainless steel bushings are gradually being widely used in mechanical equipment in various industries.