In order to maintain the original performance of the bearing in good condition for as long as possible, maintenance and inspection are required to prevent accidents before they happen, ensure the reliability of operation, and improve productivity and economy. Maintenance is best performed regularly according to the operating standards of the corresponding mechanical operating conditions. The content includes monitoring the operating status, replenishing or replacing lubricants, and regular disassembly inspections. As maintenance items during operation, there are bearing rotation noise, vibration, temperature, lubricant status, etc.

Bearing lubrication

The purpose of rolling bearing lubrication is to reduce friction and wear inside the bearing and prevent burning. Its lubrication effects are as follows:

(1) Reduce friction and wear.

In the contact parts of the bearing rings, rolling elements and retainers, metal contact is prevented to reduce friction and wear.

(2) Extend fatigue life.

The rolling fatigue life of the bearing is extended if the rolling contact surface is well lubricated during rotation. On the contrary, it is shortened if the oil viscosity is low and the lubricating oil film thickness is poor.

(3) Discharge friction heat and cool.

The circulating oiling method can use oil to discharge the heat generated by friction or the heat transmitted from the outside and cool it. Prevent the bearing from overheating and prevent the lubricant from aging.

(4) Others

It also has the effect of preventing foreign matter from invading the inside of the bearing or preventing rust and corrosion.

The bearing lubrication methods are divided into grease lubrication and oil lubrication. In order to make the bearing function well, first of all, it is necessary to select a lubrication method that is suitable for the use conditions and purpose. If only lubrication is considered, the lubricity of oil lubrication is dominant. However, grease lubrication has the advantage of simplifying the structure around the bearing. Compare the pros and cons of grease lubrication and oil lubrication.