How to maintain a slewing bearing?

In present-day society, the bearing has become a common thing in people’s lives. There is no exaggeration to say that bearing is an essential thing for any enterprise. Slewing bearing is a kind of large-scale bearing, it has so many benefits that it can apply in many fields.

However, some people still know how to maintain a slewing bearing. In this article, we will pay attention to the types of slewing bearings, and illustrate some potential issues and related solutions for you.

• What is a single in-line contact ball slewing ring?

• What’s Three-rows of roller slewing bearings?

• How to solve the potential issues with a slewing bearing?

• The importance of maintaining a slewing bearing.

What is a single in-line contact ball slewing ring?

Slewing bearings are large, specially constructed bearings that can withstand large loads. Single row contact ball slewing bearing is a kind of real slewing bearing, its structure is mainly a row of steel ball as the rolling body. Meanwhile, the steel ball with an isolation block between. Its inner and outer ring is one body, the steel ball through the plug hole loading. In addition, the ball is in contact with the raceway at four points and can withstand multiple external forces at the same time.

What's Three rows of roller slewing bearings?

The three-row roller slewing bearing consists of three rings, with the upper and lower rows of rollers distributed horizontally to withstand axial forces and overturning moments in both directions. This kind of slewing bearing is a bearing with high load carrying capacity, mainly used for heavy-duty operation.

It is important to note that although there are many different types of slewing bearings, the basic framework and components are the same.

How to solve the potential issues with a slewing bearing?

For a slewing bearing, the most important potential problem is noise due to long-term use. There are two main causes of noise problems.

The first is due to foreign matter such as dust in the slewing bearing, which causes non-periodic vibration. The fundamental solution to this problem is to dismantle and then rigorously clean the bearings, shafts, seat bores, and mating parts before installation, using a special removal lubricant to remove any foreign matter. It is worth noting that slewing bearings are relatively easy to dismantle and mount, which is one of the main advantages of slewing bearings.

Besides, If the rolling surface of the slewing ring is corroded, periodic vibrations occur. This is due to internal scarring of the slewing ring, which is also related to changes in lubrication conditions. This type of noise is controlled by not knocking on the bearing during installation, and by assembling the bearing with the shaft and inserting it into the housing, which is designed to prevent the bearing from being tilted. This action is to prevent the bearing from tilting. Grease with a high viscosity is therefore required.

The importance of maintaining a slewing bearing.

There is no denying that the maintenance of a slewing bearing is an essential part. More than 90 percent of bearing failure problems are known to be related to a lack of regular maintenance.

If the issue is not detected in time, heavily worn bearings can damage other components, such as the drive pinion and gearbox. Therefore, regular maintenance and inspection are very important.