What are the common problems when installing angular contact ball bearings? Sanli concluded the following points: 1. Are there any requirements for the installation surface and installation site? The same. If there are iron pins, burrs, floating dust and other dirt in the angular contact ball bearing, it will cause noise and vibration during the operation of the bearing, and even damage the dovetail guide rail and rolling elements. Therefore, before installing the bearing, you need to ensure that the installation surface and the installation environment are clean. 2. Do angular contact ball bearings have to be cleaned before installation? The surface of angular contact ball bearings is coated with anti-rust agent. You must use clean motor gasoline or gasoline to clean it carefully, and then apply clean, high-quality or high-speed continuous high-temperature grease The app is now installed. Cleanliness has a great influence on bearing service life and vibration noise. But we want to make a special friendly reminder: fully enclosed bearings do not need to be cleaned and oiled. 3. How to choose lubricating grease? The lubricating furnace has a very important impact on the operation and life of the bearing. Here is a brief introduction to the general criteria for selecting lubricating grease. Grease is made of base oil, emulsifier and additives. The characteristics of different types of grease and the same type of grease vary greatly, and the allowable rotation limit value is different. Try to pay attention when choosing. The performance of lubricating grease is mainly determined by the price of base oil. Generally, the price of high-viscosity base oil is suitable for ultra-low temperature and fast speed, and the price of low-viscosity base oil is suitable for continuous high temperature and long-term load. The tackifier is also related to the wetting properties, and the wear resistance of the tackifier determines the water resistance of the grease. Under normal circumstances, greases of different brands cannot be mixed, and even greases with the same tackifier will cause mutual harm due to different additives. 4. When lubricating bearings, is it better to apply more vegetable grease? When lubricating angular contact ball bearings, the more vegetable grease is applied, the better. This is a common wrong definition. Too much grease in bearings and bearing compartments will cause excessive mixing of the grease, resulting in very high ambient temperatures. The amount of lubricating fluid filled by the bearing is most suitable to fill the bearing space by 1/2 to 1/3, and it should be reduced to 1/3 when it is fast. 5. How to install and disassemble? Do not hit the bearing port and the non-bearing surface immediately when installing. Use steel cutting, sleeve specifications or other special installation tools (overalls) to make the bearing bear evenly. Do not install it according to the rolling element transmission. . If the mounting surface is greased, it will lead to a smoother installation. If the fit gap is relatively large, put the bearing in mineral oil and heat it up to 80~90°C and install it as soon as possible. The temperature must not exceed 100°C to prevent the quenching effect from reducing the strength and affecting the specification repair. When disassembly encounters difficulties, it is recommended to use a disassembly tool to pull out and carefully spray boiling oil on the inner hole. The heat will cause the inner hole of the bearing to swell, making it easy to peel off. Only when the torque is accurate can the rotation be stable! (http://)
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