Xingnong brings you tips on selecting grease for ball mill bearings

During the use of ball mill bearings, warranty and maintenance are inevitable. Bearing maintenance mainly involves daily lubrication of bearings. The quality of ball mill bearing grease selection is directly related to the stable operation of the equipment. In order to better bring out the best condition of the bearing, the following aspects must be considered when selecting bearing grease. Anti-rust performance
Used in bearings The grease must have anti-rust effect, and the anti-rust agent should preferably be insoluble in water. The grease should have good adhesion and form an oil film on the steel surface.
Mechanical stability
Grease will soften during mechanical processing, causing leakage. During normal operation, grease will be thrown from the bearing seat into the bearing. If the mechanical stability of the grease is insufficient, the soap structure of the grease will mechanically collapse during operation, causing the grease to be destroyed and thus lose its lubrication effect.
, Oil seal
The oil seal is a necessary barrier to protect the bearing and lubricant from external contamination. During the operation of the bearing, no debris or moisture can penetrate into the bearing to prevent damage to the bearing. destroy.
Correct installation and maintenance is an important factor in maximizing the bearing's service life. At the same time, attention must be paid to the cleanliness of the bearings, the correctness of the bearing selection and the selection of appropriate installation and maintenance tools. In addition, bearings must be protected from contaminants and moisture and must be properly mounted and lubricated. Therefore, the design of the bearing arrangement, the condition of the oil seal, the type of lubricant and the lubrication cycle, and even specialized maintenance all play the same but important role.
, mixed grease
Never mix incompatible greases. If two incompatible greases are mixed, their consistency will usually become softer, and eventually the bearing may be damaged due to the easy loss of grease. . If you don't know what kind of grease the bearing originally used, you must completely remove the old grease inside and outside the bearing before adding new grease.
, Classification of Grease
Greases are mainly distinguished according to temperature and working conditions. Greases can be classified according to their allowable working temperature. The consistency and lubrication ability of grease are affected by the working temperature, and they operate at a certain temperature. Bearings must be selected with the correct consistency and good lubrication at the same temperature. Grease is manufactured in different operating temperature ranges and can be roughly divided into low-temperature, medium-temperature and high-temperature greases. {}At the same time, there is a type of grease called extrusion-resistant or extrusion-resistant and added with molybdenum disulfide. At the same time, additives are added to strengthen the strength of the lubricating oil film.
Important factors in choosing grease
If you choose the wrong grease, all measures to prevent bearings will be in vain. It is important to choose a grease whose base oil viscosity can provide sufficient lubrication at the operating temperature. Yes, viscosity is mainly affected by temperature, it decreases as the temperature rises, and increases when the temperature drops. Therefore, the base oil viscosity at operating temperature must be known. Machinery manufacturers usually specify a certain type of grease, but most standard greases have a wide range of applications.
The following are several important factors for selecting grease. Mechanical type, bearing type and size, working temperature, working load condition, speed range, working conditions, such as vibration and whether the direction of the spindle is horizontal or vertical, cooling condition, sealing effect, peripheral environment.
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