The right choice of lubricants for the importance of INA roller bearings
Improper means can also cause the roller bearing to heat up. Lubrication can reduce wear during movement of parts, ensure press accuracy and reduce energy consumption. Lubrication is divided into thin oil lubrication, concentrated oil lubrication, etc. Thin oil lubrication: The advantage is that the internal friction coefficient is small, so the energy consumption against the friction is small, the thin oil has good fluidity, easy to enter the friction surface of each lubrication point, has good cooling effect, and can adhere to the friction surface. The impurities and the metal particles generated by the grinding are carried away. The disadvantage is that the oil film cannot withstand large unit pressures and has high requirements for sealing. High-speed presses are generally lubricated with large flow and thin oil, which can take away the heat generated by each friction pair.
The criteria for proper lubricant selection include the type and size of the bearing, temperature, speed, load, and expected service life and relubrication cycle.
The initial radial clearance of the INA bearing is gradually reduced during the push-in process, and the amount of push-in determines the degree of fit. Therefore, the initial radial clearance of the roller bearing must first be measured before installation. During the pushing of the bearing, the radial clearance is continuously measured until the required radial clearance reduction and the desired interference fit are achieved.
Because the temperature is affected by lubrication, speed, load, and environment. The lubrication of bearing lubrication has an important influence on the fatigue life of rolling bearings and friction, wear, temperature rise, vibration, etc. Without normal lubrication, INA bearings cannot work. Analysis of the cause of bearing damage indicates that about 40% of bearing damage is associated with poor lubrication. Therefore, good lubrication of the roller bearings is an effective measure to reduce bearing friction and wear. In addition, the lubrication of the bearing also has various functions such as heat dissipation, rust prevention, sealing, and mitigation of impact. The role of INA 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 the roller bearing.
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