subject: General Bearing And Ntn Bearing Life Cycle [print this page] General Bearing Appearance characteristics:
Roller diameter and length of rolling are small. Cage with roller or inner guidance. Cylindrical roller bearing cage structure with rivets, easy to loose, off cover. Aligning bearing diameter hole without bunkers, poor lubrication.
Material:
Inside and outside the ring and rolling the ordinary bearing steel. Of zinc brass cage materials, low strength, poor flexibility.
Heat treatment: quenching inside and outside the ring by way of ordinary, poor toughness, shock and vibration performance of poor, poor thermal stability.
Tolerances and manufacturing process: common PO-level precision tolerances (some P6-class standards) manufacturing. Rolling group 0.005. Cylindrical roller without convexity practice. Part of the raceway only for polishing, finish low.
Internal clearance: Clearance general standard group or the C3 group production, clearance or small, or range, discrete,.
ntn bearings to extend the method of life cycle: the installation of bearings
ntn bearing installation is correct, affect accuracy, life, performance. Therefore, the design and assembly departments for the installation of bearings to be adequately studied. Want to install in accordance with operating standards. Standard project work is usually as follows:
(1) cleaning bearings and bearing components connected;
(2) Check the connected components of size and finishing conditions;
(3) Installation;
(4) inspection of the bearings installed;
(5) supply of lubricant.
Alignment, alignment
In ntn bearings installed on the following, if not carefully carried out the alignment, alignment may result in bearings subject to additional load, friction and vibration. These may accelerate fatigue and reduce the service life of bearings and other machine parts may damage the use of the period. In addition, the increased vibration and friction can greatly increase energy consumption and the risk of premature failure.
Basic condition monitoring
In use during the run to often bearing the basic external conditions for monitoring, such as temperature, vibration and noise measurements, etc.. These regular inspections will be early detection of potential problems and will prevent the machine to suspend Chuxian unexpected phenomenon, to achieve production planning, increased productivity and efficiency Gong Chang.
Re-lubrication
In the operation of the process, the bearing requires a correct re-lubrication, perfect its performance. Bearing lubrication method, divided into grease and oil lubrication. In order to play well bearing function, first, to select suitable conditions for the purpose of lubrication used. If only consider the oil lubricating the lubrication dominant. However, there can simplify the bearing grease lubrication around the structure of expertise.
Unload
When ntn bearings will reach its end-use period of time, it should be replaced. Although the bearing can no longer be used, but properly remove the original bearing, and timely replacement of the new bearing, extend the service life of new bearings can play a good role in promoting. Remove bearing the appropriate way to use techniques and tools will help on the other machine maintenance and repair of bearings.
