Working principle of slewing ring bearing

Slewing ring bearing because of its shape looks like a plate, so it is also called "slew bearing", usually the diameter size is 0. 2 ~ 10 m, is able to withstand the axial and radial load and tilting moment of large bearing. Slewing ring bearing bearing consists of mounting hole, inner ring or outer ring, isolation block, cage, lubricating oil hole and sealing device.  Therefore, the design structure of the main engine is compact, easy to guide and easy to maintain. This article mainly introduces the working principle of slewing ring bearing.

The following knowledge points are listed below:

The working principle of slewing ring bearing

Slewing ring bearing works in four basic forms

1. The working principle of slewing ring bearing.

Slewing ring bearing is a large bearing capable of bearing a comprehensive load.  It can bear large axial, radial and overturning moment at the same time. Slewing ring bearing bearing bearing is generally equipped with mounting holes, internal or external gears, lubricating oil holes and sealing devices, thus enabling the design of the main engine to be compact, easy to guide and easy to maintain. Slewing ring bearing bearing presence of tooth, tooth and tooth in the four-point contact ball bearing, double row angular contact ball bearing, crossed cylindrical roller bearings (cone) and three composite bearings, four row cylindrical roller series, including four-point contact ball bearing has high static load capacity, crossed cylindrical roller bearings with high load capacity, preloaded can make crossed tapered roller bearing of the bearing has great support stiffness and the rotation accuracy, three rows of cylindrical roller bearing combination height because of the increase to the bearing capacity of bearing, all kinds of power respectively by different race,Therefore, under the same stress condition, the bearing diameter can be greatly reduced.  Therefore, it is a slewing ring bearing bearing bearing with high bearing capacity, which makes the main engine more compact. Slewing ring bearing is widely used in lifting machinery, mining machinery, construction machinery, port machinery, ship machinery and equipment, as well as high-precision radar machinery and missile launchers and other equipment of large rotary devices. At the same time, various special structure slewing ring bearing bearings can also be designed, developed and manufactured according to users' specific requirements.

Slewing ring bearing works on a simple principle: Slewing ring bearing moves objects in a way that is sliding to rolling, reducing frictional resistance.

Specifically, slewing ring bearing mainly depends on lubrication and friction to achieve the operating results. Internally, it relies on the friction of ball bearings and steel rings to function.  Externally, it also relies on the friction between slewing ring bearing bearing and other components to start operation and rub each other, thus driving the movement of the object. Since slewing ring bearing is mostly used to carry heavy and large objects, its centripetal force is highly required, which is also determined by its working principle.  Therefore, in terms of materials, it also needs the steel quality that can guarantee the quality.

Of course, friction is not enough. Slewing ring bearing depends on friction, but lubrication is also essential. Just like the chain of a bicycle, the use of a long time, the friction is too large, will affect the use of parts. Therefore, after using this bearing for a period of time, maintenance should be carried out in a timely manner and some lubricating oil should be applied to ensure that slewing ring bearing can work in a more suitable environment.

2. Slewing ring bearing works in four basic forms

(1) The point-contact rolling mode of slewing ring bearing: the point-contact rolling mode is mainly used for four-point contact ball slewing ring bearing and cross-roller slewing ring bearing. This kind of working principle to the point contact radial axial force combination bears to the steel ball quality request is higher, and the orbit wants the Angle to be even.

(2) Slewing ring bearing composite working mode of surface contact rolling: the composite working mode of surface contact rolling is mainly used for three-row roller slewing ring bearing.  Its advantage is that the contact surface is large and the bearing force is uniform and flexible.

(3) Slewing ring bearing's surface contact rolling and sliding mode of operation:The surface contact rolling and sliding combined working mode is mainly used for the turntable bearing.  Now the new type of turntable bearing has compact structure and high precision.  Therefore, the surface contact rolling and sliding combined working mode is most suitable.

(4) The rolling mode of slewing ring bearing:The main rolling and sliding combination rolling working mode is mainly used for ball column and slewing ring bearing.  This principle has the advantages of small eccentricity and long life, and has the advantages of dual structure of ball and roller.

Our company specializes in the production of various types of slewing ring bearing, if you need, please contact us, not only to provide you with a satisfactory slewing ring bearing, but also professional technical guidance and considerate after-sales service.