ntn bearing cleaning and installation of the key

1: ntn bearing cleaning focus:
1, cleaning the surface of the object state
Smooth surfaces and rough uneven surfaces cleaned the same way, the effect achieved is very different. In the choice of cleaning method should fully take into account the surface conditions.
2, the situation of dirt
Dirt to be used for different a different cleaning agent for metal surface with oil-based dirt and to scale, oxide-based dirt the selected cleaning agent and cleaning method is not quite the same. Another example is the difference as eating habits, Asian dishes on the dirt with starch-based, while the European and American dishes the dirt with fat, hence the choice of tableware detergent formulations can vary considerably.
3, the safety of using detergent
In the choice of detergent to fully understand the performance of detergent, such as whether the explosive, the skin stimulation, whether on the human toxicity and waste water to treatment, resulting in the cleaning process to avoid unnecessary accidents.
Therefore, when considering the cleaning method must be made on these issues fully integrated understanding, to select the most reasonable option. Need to stress that currently no single clean technology which can solve all cleaning problems. Therefore, various cleaning methods to be used in combination in a particular environment, comprehensive utilization, mass before cleaning, if necessary, cleaning test is essential.
2: ntn bearing installation of focus:
1. Installation ntn bearings with precision is very important:
In order to improve the actual time of ntn bearings installed with precision, must be used not to bearing deformation measurement methods and measurement tools, on the bearing bore and the cylindrical surface co-precision measurement of the actual size can be the inner and outer diameter All measurements shall be measured and the measured data on a comprehensive analysis, based on this, precision worthy of the bearing shaft and the seat hole the size of installation position. In the actual measurements with the shaft and the seat for the corresponding hole size and geometry should be measured in the bearings with the same temperature conditions.
2, ntn bearing conditions such as high-speed operation, and high temperature, special attention should be co-rotating rings can not be too loose to prevent eccentric vibration, and can not be fixed with the ring of a gap, to prevent the ferrule in deformation under load and vibration excitation.
3, taken on the fixed ring of small interference fit condition is very high on both sides to match the surface form accuracy and a smaller roughness, or install the difficulties caused by the demolition more difficult, also need to consider the spindle thermal elongation.