The importance of Grease in NSK Tapered Roller Bearing Maintenance
The importance of Grease in NSK Tapered Roller Bearing Maintenance
2022年3月25日
The Basic Functions of Lubricating Grease
The Basic Functions of Lubricating Grease
2022年3月25日

Maintenance Methods to Prevent Premature Damage of Koyo Thrust Ball Bearing

Maintenance Methods to Prevent Premature Damage of Koyo Thrust Ball Bearing

  • Before inspeaction, clean the surface of the machine, and then remove the parts around the Koyo bearing. The oil seal is a very fragile part. It needs to be carefully disassembled. Do not apply excessive force, and then carefully check the oil seal and its surrounding parts. If there are bad symptoms, be sure to replace it. The bad oil seal will cause damage to the imported bearing and strict equipment shutdown.Maintenance Methods to Prevent Premature Damage of Koyo Thrust Ball Bearing
  • Check the lubricant. Rub a little lubricant between your fingers. If there are pollutants, you can feel it, or apply a thin layer of lubricant on the back of your hand, and then seal it for inspection.
  • Change the lubricant. After draining the old engine oil, fill in fresh engine oil and let the machine rotate at low speed for a few minutes. Make the engine oil collect residual pollutants as much as possible, and then drain the engine oil. The engine oil is filtered before use.
  • 1、 Improper installation (about 16%)
  • 1. When installing, use brute force and directly knock the bearing with a hammer, which will cause great damage to the Koyo bearing; Is the main cause of deformation.Maintenance Methods to Prevent Premature Damage of Koyo Thrust Ball Bearing
  • 2. The installation is not in place, the installation is deviated or not installed in the thrust ball bearing position, resulting in too small bearing clearance. The inner and outer rings are not in the same rotation center, resulting in non concentricity.aintenance Methods to Prevent Premature Damage of Koyo Thrust Ball Bearing
  • Suggestion: select appropriate or professional bearing installation tools, and use special instruments to test after installation.Maintenance Methods to Prevent Premature Damage of Koyo Thrust Ball Bearing
  • 2、 Poor lubrication (about 50%)
  • According to the investigation, poor lubrication is one of the main reasons for the premature failure of Koyo bearings. The main reasons include: failure to fill lubricant or lubricating oil in time; Lubricant or lubricating oil is not filled in place; Improper selection of lubricant or lubricating oil; Incorrect lubrication method, etc.Maintenance Methods to Prevent Premature Damage of Koyo Thrust Ball Bearing
  • Suggestion: select the correct lubricant or lubricating oil and use the correct lubrication filling method.
  • 3、 Pollution (about 14%)
  • Pollution will also lead to premature damage of thrust ball bearing. Pollution refers to the entry of dust and metal chips into the interior of Koyo bearing. The main reasons include: opening the bearing package prematurely before use, resulting in pollution; The working environment is not clean during installation, resulting in pollution; The working environment of the bearing is not clean and the working medium is polluted.Maintenance Methods to Prevent Premature Damage of Koyo Thrust Ball Bearing
  • Suggestion: do not unpack the Koyo bearing before use; During installation, keep the installation environment clean and clean the bearings to be used; Sealing device for enhanced thrust ball bearing.
  • 4、 Fatigue (about 34%)
  • Fatigue failure is a common way of bearing damage. The common causes of fatigue failure may be: long-term overload operation of Koyo bearing; Failure to repair in time; Improper maintenance; Equipment bearings are exposed to pollutants or moisture. If the work is interrupted, the machine shall be covered with oil paper, plastic sheet or similar materials. If it is possible to clean the bearings without cover without disassembly, clean them with a brush coated with petroleum solvent, and then wipe them dry with a piece of lint free cloth or blow them dry with compressed air (be careful not to start the rotation of the thrust ball bearing assembly).Maintenance Methods to Prevent Premature Damage of Koyo Thrust Ball Bearing
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Maintenance Methods to Prevent Premature Damage of Koyo Thrust Ball Bearing
  • The bearing capacity, rotation accuracy and wear resistance of Koyo bearing will change due to its own quality and external conditions When the performance index of stainless steel bearing is lower than the use requirements and cannot work normally, the bearing will fail or even fail. Once Koyo bearing fails and other accidents occur, the machine and equipment will stop running and various abnormal phenomena such as function loss will occur. Therefore, it is necessary to find out the causes in a short time and take corresponding measures
  • 1、 The clearance of imported bearings should be appropriate. If it is too large, it will lead to impact. If it is too small, the lubrication effect is not very ideal, and it may lead to Bush burning. Therefore, the clearance must be appropriate.
  • 2、 The journal quality of imported bearings and the geometry of stainless steel bearings must be guaranteed and must not be shoddy, which is related to whether the machinery can operate normally.Maintenance Methods to Prevent Premature Damage of Koyo Thrust Ball Bearing
  • 3、 Select high-quality lubricating oil, strictly control the pressure, flow and temperature of engine oil, strengthen the oil filtration of the machine, and detect regularly.Maintenance Methods to Prevent Premature Damage of Koyo Thrust Ball Bearing
  • 4、 Monitor the temperature state of the diesel engine. It will not work normally in the environment with high or too low temperature. When it is cold, preheat the diesel engine before using it, and turn the crankshaft by hand to make the oil enter the friction surface.Maintenance Methods to Prevent Premature Damage of Koyo Thrust Ball Bearing
  • 5、 Select fuel and lubricating oil in strict accordance with the model and specification requirements of the machine and stainless steel bearings.Maintenance Methods to Prevent Premature Damage of Koyo Thrust Ball Bearing
Technical requirements for Timken non-standard bearing