INA deep groove ball bearings limit speed maintenance steps

When the INA bearing is operated under a load condition of 0.1 C, the contact stress between the rolling element and the raceway contact surface increases, resulting in an increase in the working temperature of the bearing, and the performance of the lubricant is relatively deteriorated. Therefore, the limit of the deep groove ball bearing The speed will be reduced accordingly.

For the range of C/=10, since the reduction of the limit rotation speed is small, it can be disregarded, that is, the value is f1=1.

For the radial bearing subjected to the combined load, the number of rolling elements under load increases, the frictional resistance increases, the heat generation increases, the lubrication and cooling conditions become worse, and the force acting on the cage also increases. According to the bearing type and the load angle, the limit rotation speed of the deep groove ball bearing is multiplied by a reduction factor f2 to adjust.

If the limit speed of the selected INA bearing can not meet the requirements of use, some improved technical measures can be used to improve to meet the satisfactory requirements. Such as increasing the bearing tolerance level; appropriately increasing the clearance; changing the special material and improving the structure of the cage; changing the lubrication method, such as oil and gas, oil mist and jet lubrication; improving the cooling conditions.

First, the test method for bearing lubrication maintenance

During operation, the lubricating oil should be kept open, and the sealing of the seal should be checked regularly to replace the damaged seal. Also monitor the health of the situation and can get from the noise. Lubricant, temperature and other aspects are monitored. Because it should be a smooth humming sound during normal operation, it will be treated promptly when abnormality occurs. The normal lubricant is clear and clean. If the lubricant has become dirty, there will be worn particles or contaminants. When the temperature rises, it will run. An exception will occur.

Second, the specific steps of bearing lubrication maintenance

1, the importance of lubrication

Highly valued INA bearing lubrication technology. Lubrication can use oil film to separate the relatively moving rolling surfaces from each other, without excessive wear due to rough contact, and to ensure stable performance and rotational accuracy during a given working life.

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Effect of lubricating oil on the performance and life of INA universal joint bearings

INA bearing lubricants can be broadly divided into two categories: lithium-based and calcium-based. Vibration control systems can help solve problems. Based on the application technology of the LM Guide Ball Screw, the system protects people's lives and lives during an earthquake. The system not only prevents damage caused by earthquakes, but also has excellent water resistance, mechanical stability and chemical stability of lithium-based lubricating oil. Lithium soap has strong thickening ability, and extreme pressure is added to the grease. After adding additives such as agents and rust, a variety of long-life fats are prepared. It can also reduce people's panic because of their ubiquity, reliability and durability. Brick machine bearings use harsh environment, long time, heavy load and difficult maintenance. Therefore, most of them use lithium-based lubricants.

If there are foreign objects such as iron filings, burrs, dust, etc. in the INA bearing, it will cause noise and vibration during the operation of the universal joint bearing, and even damage the raceway and rolling elements. Therefore, before installing the bearing, you must ensure that the mounting surface and the installation environment are clean.

Lubrication has a very important influence on the operation and life of INA bearings. Grease is made from base oils, thickeners and additives. The performance of the grease is primarily determined by the base oil. Generally low viscosity base oil is suitable for low temperature and high speed; high viscosity is suitable for high temperature and high load.

The thickener is also related to the lubricating properties, and the water resistance of the thickener determines the water resistance of the grease. In principle, the different greases of the brand cannot be mixed, and even the grease of the same thickener may have a bad influence on each other due to the different additives. The universal joint bearing surface is coated with anti-rust oil, which must be carefully cleaned with clean gasoline or kerosene, and then cleaned with high-quality or high-speed high-temperature grease for installation. Fully enclosed bearings do not need to be cleaned and refueled.

After the INA bearing is installed, if it is not carefully aligned, alignment may result in additional loads, friction and vibration of the bearing. These can accelerate fatigue and reduce bearing life 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.

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