Lubrication has an important influence on the fatigue life and friction, wear, temperature rise and vibration of NSK bearings, especially rolling bearings. Without normal lubrication, the bearing will not work. The reason for NSK bearing damage indicates that about 40% of bearing damage is related to poor lubrication. Therefore, good lubrication of NSK bearings is an effective measure to reduce bearing friction and wear.
In addition, NSK bearings are lubricated with heat, rust, seal, and shock.
The role of NSK bearing lubrication can be briefly explained as follows
a. forming an oil film between the two rolling surfaces or sliding surfaces that are in contact with each other to separate the two surfaces, reducing friction and wear of the contact surface.
b. When using oil lubrication, especially when using circulating oil lubrication, oil mist lubrication and fuel injection lubrication, the lubricating oil can take away most of the friction heat inside the bearing and play an effective heat dissipation effect.
c. When grease lubrication is used, it is possible to prevent foreign matter such as dust from entering the bearing and sealing.
d. Lubricants have the effect of preventing metal corrosion.
e. Extend the fatigue life of NSK bearings.
First, the requirements for the installation surface and installation site
If foreign matter such as iron filings, burrs, dust, etc. enters the bearing, it will cause noise and vibration during the operation of the bearing, and even damage the raceway and rolling elements. Therefore, before installing the bearings, you must ensure that the mounting surface and the installation environment are clean.
Second, the bearing must be cleaned before installation
The surface of the bearing is coated with anti-rust oil. You must clean it with clean gasoline or kerosene, and then apply it with clean high-quality or high-speed high-temperature grease. The effect of cleanliness on NSK bearing life and vibration noise is very large. But we must remind you that the fully enclosed bearings do not need to be cleaned and refueled.
Third, the choice of grease
Lubrication has a very important impact on the operation and life of NSK bearings. Here is a brief overview of the general principles for selecting greases. Grease is made of base oil, thickener and additives. The grease performance of different types and different grades varies greatly. The allowable rotation limit is different. Be careful when selecting. The performance of grease is mainly determined by the base oil. Generally, the low viscosity base oil is suitable for low temperature, high speed and high viscosity 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.
For more information and purchase please visit: https://www.supplyforever.com
