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.
For more information and purchase please visit: https://www.supplyforever.com