Analysis of the Influence of IKO Non-standard Bearing Lubrication Method on Performance

When the advantages of chrome steel and stainless steel as bearing materials were examined, it was found that they did not only have an anti-rust effect. Chrome steel is the most common non-standard bearing material. It is harder than stainless steel, so it lasts longer. However, at higher temperatures, its performance is not good.
At a high temperature of 120C, it undergoes tremendous deformation and the load is reduced. It can withstand temperatures up to 150C, but an instant 150C or higher will reduce the life of IKO bearings. The heat treatment can subject the bearing to an elevated temperature of 170C.
The purpose of the lubrication of the bearing is to reduce the internal friction and wear of the non-standard bearing, to prevent the sticking, and its lubricating effect is as follows.
(1). Reduce friction and wear.
In the mutual contact portion of the ferrule, the rolling element and the retainer constituting the IKO bearing, metal contact is prevented, and friction and wear are reduced.
(2). Extend fatigue life.
The rolling fatigue life of IKO bearings is prolonged when the rolling contact surface is well lubricated during rotation. Conversely, if the oil viscosity is low and the thickness of the lubricating oil film is not good, it is shortened.
(3). Discharge friction heat, cooling
The circulation oil supply method or the like can be used to discharge heat generated by friction or heat from the outside to cool. Prevent the bearing from overheating and prevent the lubricant from aging itself.
(4). Other
There is also the effect of preventing foreign matter from entering the inside of the bearing or preventing rust and corrosion.
Rolling bearing lubrication can generally be divided into three categories: oil lubrication, grease lubrication and solid lubrication depending on the type of lubricant used.
Among them, oil lubrication has a wider temperature range than other lubrication methods, and is more suitable for bearings working under high speed and high load conditions. At the same time, because of oil lubrication, it also has convenient equipment maintenance and lubricant replacement, and friction pairs in the system such as gears. The advantages of simultaneous lubrication, so far, the use of oil lubrication for non-standard bearings is the most common.
Grease lubrication has the advantages of simple sealing device, low maintenance cost and low grease cost. It is widely used in IKO bearings running at low speed, medium speed and medium temperature. In particular, the advent of anti-wear additives in recent years has improved the lubricating properties of greases and made grease lubrication more widely used.
If oil lubrication and grease are used to achieve the required lubrication conditions for the bearings, or if specific operating conditions are not met, a solid lubricant can be used or the bearing's own lubrication properties can be improved.
The reason for the noise generated by the bearing is more complicated. One is that the inner and outer rings of the bearing are worn on the surface. Due to this wear, the IKO bearing and the housing, the rolling bearing and the shaft are broken, resulting in the axis deviating from the correct position and generating an abnormal sound when the shaft is moving at a high speed. When the non-standard bearing is fatigued, the surface metal peeling off will also increase the radial gap of the bearing to produce abnormal noise.

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Maintenance method to avoid shortening service life of IKO tapered roller bearings

IKO bearings usually have limited installation space. In most cases, bearings are based on mechanical design or other design limitations. Type and size of bearing, thrust angular contact ball bearing. What types of bearing seals are there? . Therefore, the decision to select the bearing diameter of the New Territories North Region is based on. Therefore, the main dimension tables of standard tapered roller bearings are sized according to international standards.
There are many factors that affect the service life of IKO bearings, which can be further explained by the use factors and internal factors.
The use factors mainly refer to whether the installation adjustment, use and maintenance, maintenance and repair, etc. meet the technical requirements. According to the technical requirements of IKO bearing installation, use, maintenance and maintenance, monitor and check the load, speed, working temperature, vibration, noise and lubrication conditions of the tapered roller bearing in operation, find the abnormality and find the cause immediately. Adjust to bring it back to normal. The installation condition is one of the primary factors in the use factor. The bearing is often changed due to improper installation, and the force state between the parts of the whole bearing changes, the bearing runs in an abnormal state and ends the service life early.
     In order for IKO bearings to be fully utilized and to maintain their proper performance for a long time, regular maintenance (regular inspection) must be performed. Through proper periodic inspections, early detection of failures and prevention of accidents are important to improve productivity and economy.
1, cleaning
     When the IKO bearing is removed for inspection, the appearance record is first recorded by photography. Also, verify the amount of lubricant remaining and sample the lubricant before cleaning the tapered roller bearing.
     a. The cleaning of the bearing is carried out by rough washing and fine washing, and a metal mesh frame can be placed on the bottom of the used container.
     b. When rough washing, remove the grease or adhesive with a brush or the like in the oil. At this time, if the IKO bearing is rotated in the oil, be careful that the rolling surface will be damaged by foreign matter or the like.
     c. When fine washing, slowly rotate the IKO bearing in the oil, which must be carried out carefully.
     The cleaning agent generally used is a neutral non-aqueous diesel oil or kerosene, and a warm alkali liquid or the like is sometimes used as needed. Regardless of which cleaning agent is used, it is often filtered and kept clean. Immediately after cleaning, apply anti-rust oil or anti-rust grease to the tapered roller bearing.
2, inspection and judgment
     In order to judge whether the removed IKO bearing can be reused, it is important to check its dimensional accuracy, rotation accuracy, internal clearance, mating surface, raceway surface, cage and seal. Regarding the inspection result, it can be judged by a person who uses a conventional bearing or a tapered roller bearing. The criteria for judgment vary depending on mechanical properties and importance, inspection period, and the like. IKO bearings must not be reused if they are damaged and must be replaced.
     a, the fracture and defects of the bearing components.
     b. Peeling of the rolling surface of the raceway surface.
Bearings are generally manufactured through multiple processes such as forging, heat treatment, turning, grinding and assembly. The rationality, advancement and stability of each processing technology will also affect the life of the bearing. The heat treatment and grinding processes that affect the quality of the finished tapered roller bearing often have a more direct relationship with the failure of the bearing. In recent years, research on the metamorphic layer of bearing working surface shows that the grinding process is closely related to the bearing surface quality.
The main task of IKO bearing life analysis is to find out the main factors causing bearing failure based on a large amount of background materials, analysis data and failure modes, so as to propose improvement measures in a targeted manner, extend the service life of tapered roller bearings and avoid The bearing has a sudden early failure.

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