Analysis of the causes of rolling bearing damage

Analysis of the causes of rolling bearing damage:
    In the process of using the bearing, due to its own quality and external conditions, the bearing capacity, rotation accuracy and anti-friction performance of the bearing will change. When the performance index of the bearing is lower than the use requirements and cannot work normally, it is called If the bearing is damaged or fails, if the bearing is damaged or other unexpected conditions, the machine, the equipment will stop, and the function will be damaged.
    Therefore, it is necessary to investigate the cause of damage to the bearing in a short period of time and take corresponding measures. Of course, the damage of the rolling bearing is much more complicated than the damage of the general mechanical parts. The damage of the rolling bearing is characterized by many manifestations, complicated reasons, and damage of the bearing. In addition to the internal factors of bearing design and manufacturing, most of them are caused by improper use, such as: suitable selection of cloth, unreasonable support design, improper installation, poor lubrication, poor sealing and other external factors.
    It is of great significance to study the formation and causes of rolling bearing damage. On the one hand, it can improve the use of FAG bearings, correctly use the bearings, give full play to the performance of the bearings, and on the other hand help to develop new products with better performance. In addition to the precautions, installation methods, operation monitoring, etc. in the use of rolling bearings, this paper also focuses on the form and causes of bearing damage and the countermeasures to be taken.

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

The bearing is hot during operation

The following questions are for reference:
1. The pre-tightening force is too large and the clearance becomes small;
2. The choice of lubricating oil or grease is unreasonable, the lubrication system configuration is reasonable, and the heat dissipation is not good;
3. What is the temperature reached and is within the allowable range;
4. Whether the bearing selection is correct and whether it exceeds the bearing design performance;
5. Whether the bearing accuracy meets the requirements; whether there is damage;
6, the impact of the use of the environment on the bearing, such as dust and other particles can enter the bearing;
7. Whether the pre-tightening force of the bearing is uniform during installation.

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

NSK bearing radial clearance adjustment method

 The usual methods for adjusting the radial clearance of NSK bearings are as follows:

     1. For the backlash of the cylindrical and elliptical bearing bushes, it can be adjusted by hand grinding or scraping in the bearing.

     2. For the top clearance of cylindrical and elliptical bearing bushes, it can be adjusted by manual grinding or when the condition is allowed to be padded in the bearing.

     3. For multi-oil wedge fixed bearing bushes, in principle, it is not allowed to repair and adjust the bearing bush clearance. When the clearance is not suitable, the new tile should be replaced.

     4. For multi-oil wedge tilting bearing bushes, it is not allowed to repair the tile. If the gap is not suitable, the tile should be replaced. For the tile with adjustable thickness, the amount of the tile can be adjusted by adding a stainless steel pad under the adjustment block behind the tile or by thinning the thickness of the adjustment block. Note that for multi-oil wedge tilting bushings, the thickness error between the same set of tiles should be less than 0.01mm.

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

Bearing maintenance

In order to fully utilize the bearings and 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 bearing is removed and inspected, the appearance record is first recorded by photography. Also, verify the amount of lubricant remaining and sample the lubricant before cleaning the bearings.

      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 bearing is rotated in the oil, be careful that the rolling surface will be damaged by foreign matter or the like.
      c. When washing finely, slowly rotate the bearing in the oil and carry out it 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 bearing.

    2. Inspection and judgment:
    In order to judge whether the removed 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 is using a conventional bearing or a proficient bearing.

    The criteria for judgment vary depending on mechanical properties and importance, inspection period, and the like. Bearings must not be reused if they are damaged and must be replaced.

      a Breakage and defects in bearing components.
      b Peeling of the rolling surface of the raceway.

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