One way bearing installation tips

1. It is necessary to ensure the cleaning of the installation surface and the installation environment. If the unidirectional bearing contains foreign matter such as burrs, iron filings, dust, etc., the bearings will generate noise and vibration during operation, and even damage the raceways and rolling elements.

2. The TIMKEN bearing must be cleaned before installation. Because the one-way bearing is not rusted before the factory is shipped, anti-rust oil or anti-rust grease is injected between the raceway and the rolling element. Therefore, it must be cleaned with clean gasoline and kerosene, and then coated with a clean high-quality or high-speed high-temperature lubricant. However, some fully enclosed bearings and bearings coated with lubricated rust-proof grease do not require cleaning. The effect of cleanliness on bearing life and vibration noise is very large.

3. Choose the right grease. Grease is made of base oil, thickener and additives. The performance of greases of different types and different grades varies greatly, and the allowable rotation limit is different. The performance of grease is also determined by base oil. Thickener It is also related to the lubricating properties, and the water resistance of the thickener determines the water resistance of the grease. Generally low viscosity base oil is suitable for low temperature and high speed; high viscosity is suitable for high temperature and high load. Different brands of grease can not be mixed, and even the same thickener grease will have a bad influence on each other due to different additives.

4. The heating temperature should be controlled well, the temperature is too high TIMKEN bearing will be damaged, the temperature is too low, the ferrule expansion is insufficient, the effect is not significant. The amount of thermal expansion of the inner ring inner diameter obtained by the heating temperature of 80 to 1000 ° C is sufficient for a bearing having a general interference amount.

5. Once the required heating temperature is reached, install it as soon as possible to avoid cooling and installation difficulties.

6. The action requirements are skilled, prompt and accurate. The one-way bearing also shrinks in the width direction during cooling. Therefore, a certain pressure is applied during installation to press the inner ring to the shoulder, and after cooling, it is tested with a very thin feeler gauge, whether it is the inner ring end face and the shaft. There is a gap between the shoulders.

Bearings need to be heated, you can refer to the above method. In the heating process, we must pay attention to control the temperature to ensure the normal installation of the bearing.