The bearing lubrication, the main purpose is:
Reduce friction and wear: make the ferrules, rolling elements and retainers, the contact between the three parts, can reduce friction and wear.
Extend the bearing fatigue life: lubrication is good, can extend the bearing fatigue life.
Exhaust frictional heat, cooling: is the heat generated by the discharge of friction, or the heat from the outside. Thus avoiding the bearing overheating, and lubricating oil aging phenomenon.
In addition to these purposes, it also prevents foreign matter from entering the bearing, preventing bearing corrosion and rust.
The lubrication method of the bearing is divided into two kinds, which are grease lubricated and oil lubricated. But no matter what kind of lubrication method, should take into account the use of conditions, the use of purpose, only to choose the right, in order to achieve good lubrication effect. But also pay attention to the amount of too little is not too good.
2. bearing on the steel requirements
Exposure to fatigue strength: contact fatigue strength should be strong, so that can extend the life of the bearing, delay fatigue damage.
Wear resistance: bearing work, even if no rolling friction, there will be sliding friction, so that the bearing wear, so require a good wear resistance.
Hardness: good hardness, then you can improve the bearing contact fatigue strength and wear resistance, it is also one of the bearing quality indicators.
Anti-rust performance: bearing steel to have a good anti-rust performance, so as not to be eroded corrosion.
Processing performance: processing performance is better, including cold, thermoforming performance, cutting performance.