IKO cam bearing lubrication technique to solve the raceway noise analysis

The source of the rolling sound is caused by the natural vibration of the ferrule after the load. Due to the elastic contact of the ferrule and the rolling body, a nonlinear vibration system is formed. When the lubrication or machining accuracy is not high, the natural vibration associated with this elastic characteristic is excited, and when it is transmitted to the air, it becomes noise. It is well known that even if IKO bearing parts are processed using the most advanced manufacturing techniques in the world, there will always be small geometric errors in the working surface, which will cause small fluctuations between the raceway and the rolling elements to excite the natural vibration of the vibration system.

First, the bearing drip lubrication method

Drip oil lubrication is suitable for the bearing parts that need to be supplied quantitatively to the lubricating oil. The amount of oil to be dripped is preferably every 3-8 seconds. Excessive oil quantity will cause the bearing temperature to increase.

Second, the oil bath lubrication method of cam bearings

Oil bath lubrication is the common lubrication method in most cam bearings and is suitable for lubrication of low and medium speed IKO bearings. A part of the bearing is immersed in the groove, the lubricating oil is brought up by the rotating bearing part, and then flows back to the oil groove oil surface should be slightly lower than the center of the lowest rolling element.

Third, the radiation lubrication of the bearing

The low pressure oil is injected into the bearing through the nozzle by the oil pump, and the oil injected into the bearing flows into the oil groove through the other end of the bearing. When the bearing rotates at high speed, the rolling element and the cage also cause the surrounding air to flow at a relatively high rotational speed. It is difficult to send the lubricating oil to the bearing in a smooth manner. In this case, it is necessary to spray the smooth oil with low-pressure radiation. In the bearing, the position of the nozzle should be placed between the inner ring and the center of the cage.

Fourth, the bearing lubrication method

The oil is pumped to the cam bearing component by an oil pump, and then filtered and cooled by the lubricating oil after the bearing. Because the circulating oil can take away a certain amount of heat and cool the IKO bearing, this method is used for bearing parts with higher rotational speed.

Five, bearing spray lubrication method

The use of boring shrinking air is mixed with smooth oil through a sprayer to create an oil mist. In the radial bearing, the air flow can effectively cool the bearing and prevent the intrusion of impurities. This method is suitable for the smoothness of high speed and low temperature bearing components.

Although the bearing raceway noise is unavoidable, it is possible to use high-precision machining of the working surface of the part, the correct selection of the bearing and the precise use of the bearing to reduce noise and vibration.

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Extend the life cycle of TIMKEN angular contact ball bearings from maintenance

The main task of angular contact ball bearing failure analysis is to find out the main factors causing bearing failure based on a large number of background materials, analysis data and failure modes, so as to propose improvement measures in a targeted manner, extend the service life of bearings, and avoid TIMKEN bearings. A sudden early failure occurred.

First of all, the structural design is reasonable and advanced, so that there will be a long angular contact ball bearing life. 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 TIMKEN 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.

1, pay attention to the installation of the bearing

Whether the bearing is installed correctly affects accuracy, life and performance. Therefore, the design and assembly department should fully study the installation of bearing products. I hope to install according to the operating standards. The items of the job standard are usually as follows:

(1) cleaning the bearing and bearing related components;

(2) Check the size and finishing of the connected components;

(3) installation;

(4) Inspection after installing the bearing;

(5) Supply lubricant. Carefully do the five steps of bearing installation

2, alignment, straightening

After the TIMKEN bearing is installed, alignment may result in additional loads, friction and vibration of the bearing if not carefully aligned. These can accelerate fatigue and reduce the service life of bearing products and can damage the life of other machine parts. In addition, increased vibration and friction can greatly increase energy consumption and risk of premature failure.

3. Basic condition monitoring

During use, the basic external conditions of the bearing operation are often monitored, such as temperature, vibration and noise measurements. Bearing experts point out that these regular inspections will identify potential problems early and will prevent unexpected machine stops, enabling production plans, increased plant productivity and efficiency.

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