How to maintain the water pump bearing

How to maintain the water pump bearing

(1) The pump that is newly put into use must be replaced with grease (oil) after 100 hours of operation, and then replaced once every 500 hours.

(2) Flow bearing with grease lubrication, after 1500 hours of operation, the grease should be replaced. The amount of oil to be filled should not be too much or too little, because too much or too little grease will cause the bearing to heat up. It is preferably 1/2 to 2/3 of the volume of the bearing chamber.

(3) For bearings lubricated with lubricating oil, the amount of oil should be added to the specified position.

(4) The container containing lubricating oil or grease should be clean and should be sealed properly. There should be no dust, iron filings and other debris to avoid damage to the bearing.

(5) Motor bearings generally use sodium-based grease, which is characterized by high temperature resistance (125 ° C), but is easily soluble in water, so it can not be used for lubrication of water pump bearings.

Advantages of hybrid ceramic bearings

Hybrid ceramic bearings may be less common, and the main configuration of hybrid ceramic bearings is a combination of inner and outer ring bearing steel / stainless steel + ceramic ball + PA66 / stainless steel retainer + 2RS / ZZ. Hybrid ceramic bearings have the following four advantages in use.

(1), high temperature resistance, ceramic ball thermal expansion coefficient is small, in the high temperature environment will not cause the bearing ball to expand due to temperature, which greatly improves the use temperature of the entire bearing, the temperature of ordinary bearings is about 160 degrees, ceramic ball Can reach more than 220 degrees.

(2), high speed, ceramic ball has oil-free self-lubricating properties, ceramic ball friction coefficient is small, so ceramic ball bearings have a very high rotational speed. The statistics of ceramic ball bearings are more than 1.5 times the speed of the general bearing.

(3), long life, ceramic ball can be added without any grease, which means that even if the grease is dry, the bearing can still operate, thus avoiding the premature bearing damage caused by the dry grease in the ordinary bearing. According to us The test and some customer feedback use the ceramic ball after the bearing has a service life of 2-3 times that of ordinary bearings.

(4) Insulation. Bearings made of ceramic balls can insulate the inner and outer rings of the bearing. Because the ceramic ball is an insulator, the ceramic ball can be used between the inner and outer rings of the bearing to achieve the effect of insulation. Can be used in a conductive environment. This is also the biggest advantage of hybrid ceramic bearings.

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Improvement of the inner chute grinding fixture for tapered bore roller bearings

Cylindrical Roller Bearings

Cylindrical roller bearings need to overcome the shortcomings of solid cylindrical roller bearings. In the design of hollow cylindrical roller bearings, the hollow shape should be improved and the preload problem of hollow cylindrical roller bearings should be reduced. If the hollow cylindrical rolling element has greater elasticity than the solid cylindrical rolling element, it is necessary to increase the bearing capacity, and the bearing life is improved according to the contact area of the roller bearing. The quality of the hollow cylindrical bearing and the centrifugal inertia force should be adapted to the rotational speed, improve the structural design of the hollow cylindrical roller bearing and improve the working quality. Cylindrical roller bearing is a very important mechanical component. The working performance will directly affect the working performance of the mainframe. It is necessary to continuously improve the complexity of mechanical equipment, and fully improve the high-speed, heavy-duty and high-precision extreme working conditions and rationality. For the safety, dynamic performance and load carrying capacity of cylindrical roller bearings, the requirements are increased.

Structural design of elastic composite cylindrical roller bearing
3.1 Hollow cylindrical roller bearing has many advantages. It is necessary to improve the periodic alternating state of hollow cylindrical rolling elements to ensure the reasonableness of the load. For the bending stress of hollow cylindrical rolling body, it is necessary to improve the bending fatigue fracture problem of rolling and promote the damage of hollow cylindrical roller bearing. solve. Thereby, the engineering application ability of hollow cylindrical roller bearing can be realized to meet the requirements of modern mechanical development. According to the combination innovation principle, the structural stress condition of the cylindrical roller bearing structure is improved, the bearing capacity of the bearing is enhanced, the bending stress of the hollow cylindrical rolling element is reduced, and the bearing fatigue life is guaranteed. Improve the problem of bearing noise according to the physical characteristics of the textbook.

3.2 cylindrical roller bearing structure needs innovative research, for the solid cylindrical rolling element contact stress to improve the bending stress of the hollow cylindrical rolling element, increase the rolling element and contact half-width stress level, reduce the bearing comprehensive fatigue strength problem, design a reasonable plan to improve the cylindrical rolling The sub-bearings are essentially rolling elements embedded in good molecular materials. At the same time, it is necessary to continuously improve the stress concentration at the edge of the rolling element and improve the depth of the edge design. The design of the cylindrical roller bearing structure is improved according to a certain scheme to ensure the rationality of the elastic composite column bearing. At the same time, it is necessary to improve the influence of the stress concentration on the edge of the rolling element, design a deep hole with reasonable inclination in the rolling element, and then give the cylindrical roller bearing a reasonable name for the composite cylindrical roller bearing.

3.3 Under normal circumstances, the rolling element of elastic composite cylindrical roller bearing is more likely to cause deformation than the solid cylindrical rolling element. Therefore, it is necessary to increase the contact between the rolling element and the bearing under the same load, and reduce the stress in time. The elastic composite cylindrical rolling element The stress condition should be improved in time, especially for the bending stress of the rolling body, the fatigue resistance and the damage resistance between the bearings are increased, and the bearing safety is