What You Should Know About Contact Ball Slewing Bearings

Whether you're looking for a slewing bearing for a bicycle or a motorcycle, there are a number of considerations to keep in mind. For example, you should know that the contact ball slewing bearing is a single-row four-point bearing, which means that the balls in each bearing are mounted on top of each other instead of the bottom. This can cause friction, which can lead to scratches on the surface layer of the steel ball.

Double arches

Unlike conventional ball bearings with two ball raceways, a double arch ball slewing bearing has a radial loading capacity. The axial loading capacity of these bearings is 80% higher than the single-row version. This type of bearing is useful for applications with axial loads and large tilting moments. It is also suited for mounting places that are limited in the radial direction.

These bearings are often used in a variety of industries. They are widely used in construction machinery, mining machinery, and port machinery. They are also used in high-precision radar machinery. This type of bearing provides greater safety and precision. It can handle radial and moment loads simultaneously. They are also suitable for high speeds. They can be found in several types, including light, medium, and heavy slewing bearings.

Single-row four-point contact ball slewing bearing

Among various types of slewing bearings, the Single-row four-point contact ball slewing bearing is one of the most commonly used ones. They can be used in a variety of industrial applications such as construction machinery and welding manipulators. This type of bearing is also used in a number of wind turbines, especially in wind turbine pitch systems. They are designed to withstand radial and axial loads.

Four-point contact ball slewing bearings are especially effective in applications with high diameter-to-axial-length ratio. Their compact design and high carrying capacity make them ideal for slow-to-moderate speed applications. However, they can be subject to large loads and may be subject to vibration and metal impurities. These factors may negatively affect the rating life of the bearings.

Lubrication interval

Choosing a good lubrication interval for a contact ball slewing bearing can be a complex process. It is essential to understand the operating conditions, including temperature, ambient moisture, and the condition of the bearing. There are several types of lubricants, including solid, liquid, and grease. Solid lubricants may be better suited for extreme operating conditions, while greases may be better suited for more mild operating conditions.

The grease quantity formula is a good way to find out the correct amount of grease you need to apply to your bearing. This formula can be used for any type of bearing. For example, you can use the formula when calculating how much grease to put on your slewing ring. The formula should produce the grease quantity in grams.

Friction can cause scratches on the surface layer of the steel ball

During normal operation of a steel ball slewing bearing, friction can cause scratches on the surface layer. This can cause premature failure of the slewing bearing raceways. The wear of the raceway depends on several factors.

One of the main causes of raceway erosion is poor heat treatment. Another factor is the lack of lubricating oil. The lack of lubricating oil is caused by the absence of a film of lubricant between the surface of the roller and the raceway. In addition, the surface hardness of the raceway is usually too high. Insufficient lubricating oil intensifies the wear of the raceway.

The slewing bearing raceway also undergoes erosion at the junction of the raceway tempering soft belt. In addition, excessively short rollers may create a gap between the end face of the roller and the raceway. This can cause damage to the end face chamfer in the diagonal direction.