In order to improve the service life of the bearing, a bearing lubrication method that uses clean lubricating oil should be selected. There are many methods of oil lubrication, including oil injection, oil bath, oil mist, circulating oil, oil slinger, drip oil lubrication, etc. Six application methods of bearing oil lubrication

1. Oil injection: For high-speed applications, the bearing must be supplied with sufficient but not excessive lubricating oil to obtain sufficient lubrication without increasing the operating temperature.

A particularly effective method used here is the oil injection method, which uses high pressure to spray oil on one side of the bearing.

The oil injection speed must be high enough, at least 15 m/s, to penetrate the turbulence around the rotating bearing.

2. Oil bath: a simple oil lubrication method.

The lubricating oil carried by the rotating parts of the bearing is distributed inside the bearing and then flows back to the oil tank.

When the bearing is stationary, the oil level should be close to the center of the rolling part.

It is recommended to use an oil level gauge, such as SKF LAHD 500, to ensure the correct oil level.

When running at high speed, the oil level will be greatly reduced, and the bearing box may be filled with lubricating oil due to the oil level gauge.

3. Oil mist: Due to its possible adverse impact on the environment, it is not recommended for a period of time.

The new generation of oil mist generators can generate oil mist with an oil content of 5 ppm. The newly designed special seals can also minimize the spread of oil mist.

If synthetic non-toxic oil is used, the impact on the environment can be further reduced.

4. Circulating oil: High-speed operation will cause the operating temperature to rise and accelerate the aging of the oil. In order to avoid frequent oil changes and complete immersion in water, the circulating oil lubrication method is usually used.

The circulation is usually carried out using an oil pump.

After the oil passes through the bearing, it usually flows into the oil sump, where it is filtered and cooled if necessary, and then returned to the bearing. Proper filtration can increase the factor c, thereby extending the service life of the bearing.

Cooling the lubricant can keep the operating temperature of the bearing low.

5. Oil slinger: For applications that require oil lubrication due to speed and operating temperature and require high reliability, we recommend the oil slinger lubrication method.

The oil slinger plays a role in the drive oil circulation.

The oil slinger is loosely suspended from the sleeve on one side of the bearing and is immersed in the oil in the lower half of the bearing housing.

As the shaft rotates, the oil slinger also rotates, delivering oil from the bottom to the oil reservoir.

The lubricant then flows through the bearing and returns to the oil tank at the bottom.

6. Oil drip lubrication: Also known as the oil-air lubrication method, this method uses compressed air to align a small amount of measured lubricating oil with each bearing for lubrication. Compared with other lubrication methods, this method of lubricating with a small amount of oil allows the bearing to run at a lower temperature or higher speed.

Using a metering device such as an oil + air system, the oil is delivered to the pipeline at specified time intervals.

The lubricating oil is transported by compressed air; it covers the inside of the pipeline, crawls along the inside of the pipeline, and shoots onto the bearing through the nozzle.

Compressed air cools the bearing

At the same time, additional pressure is generated in the bearing layout to prevent impurities from intruding.

In order to ensure the service life and performance of the bearing, we should choose the correct bearing lubrication method and use clean lubricating oil to avoid damage during the use of the bearing