Railway bearing forging is the key part in railway rolling stock operation, which is of great significance to ensure the safety and stability of railway traffic. The lubrication system and grease selection are important factors that affect the service life and performance of railway bearing forgings. This paper introduces the lubrication system and grease selection of railway bearing forgings.
The lubrication system of railway bearing forgings mainly plays the role of reducing friction, reducing wear, cooling and cooling. Commonly used lubrication systems include oil pool lubrication, oil mist lubrication, full seal lubrication and so on. The characteristics of different lubrication systems are as follows:
Oil pool lubrication: the bearing forgings are soaked in lubricating oil, and the lubricating oil is constantly flowing through stirring or circulating to achieve the lubrication effect. This lubrication method is simple and easy, but the lubricating oil consumption is large, and it needs to be replaced regularly.
Oil mist lubrication: Spray the lubricating oil onto the bearing forgings after atomization to form an oil film for lubrication. This lubrication method can precisely control the amount of lubricating oil and improve the lubrication effect, but it requires special oil mist lubrication equipment.
Full seal lubrication: the bearing forgings are placed in the sealed lubrication chamber, and the lubricating oil is transported to the bearing forgings through the oil pump to achieve automatic lubrication. This lubrication method can keep the lubricating oil clean and improve the service life of bearing forgings.
The choice of grease for railway bearing forgings should be determined according to its conditions of use and performance requirements. The following factors need to be considered when choosing oils:
Adaptability: The grease should be adapted to the material, running speed and load of the bearing forgings, so as to ensure the lubrication effect under different conditions.
Economy: When selecting grease, it is necessary to consider its price and service life to reduce maintenance costs.
The commonly used grease of railway bearing forgings are lithium base grease, calcium base grease and so on. Among them, lithium base grease has good water resistance and mechanical stability, which is suitable for high-speed, heavy load, high temperature and other conditions of railway bearing forging; Calcium base grease has better heat resistance and oxidation resistance, which is suitable for some high temperature and high load railway bearing forgings.
In order to ensure the normal operation and service life of railway bearing forging, it is necessary to carry out regular maintenance and maintenance. Specific measures include: regularly check the oil level and quality of lubricating oil, timely replacement or supplement lubricating oil; Regularly clean the debris and dust on the surface of bearing forgings to keep them clean; Check the running status and sound of bearing forgings regularly, find and deal with abnormal situations in time.
In short, the lubrication system and grease selection of railway bearing forgings are one of the key factors to ensure their normal operation and service life. Through the reasonable selection and use of lubricating oil and grease, as well as regular maintenance and maintenance, the performance and service life of railway bearing forgings can be effectively improved, providing a more reliable guarantee for the development of railway traffic.
