How Do Turntable Bearings Work?

Do you know what a turntable bearing is? Turntable bearing is a kind of large bearing with special structure that can bear large axial load, radial load and overturning moment and other comprehensive loads at the same time, which has various functions such as support, rotation, transmission, and fixation. Usually, you may have little contact with them, so you don't know much about them. But it doesn't matter, in order to give you a new understanding of the turntable slewing bearing, the following will introduce to you what is the turntable bearing, and what are the relevant knowledge of its working method, hoping to help friends who have this need.

1. Introduction of turntable bearing

Under normal circumstances, the turntable bearing itself is equipped with mounting holes, lubricating oil and sealing devices, which can meet the different needs of various types of hosts working under various working conditions; on the other hand, the precision turntable bearing itself has the characteristics of compact structure, convenient guidance of rotation, easy installation and easy maintenance, etc. It is widely used in lifting and transportation machinery, mining machinery, construction machinery, port machinery, wind power generation, medical equipment, radar and missile launchers and other large rotary devices.

2. The basic structure of the turntable bearing

A turntable bearing is usually composed of four major components: inner ring, outer ring, rolling elements, and spacer blocks. Because the core component adopts turntable bearing, it can bear axial force and radial force at the same time. There are many forms, but the structure and composition are basically the same.

(1) From left and right respectively (upper part): outer ring (with or without teeth, sealing belt, rolling element), oil filler.

(2) From left to right are (lower part): plug, taper pin, inner ring (with or without teeth), spacer block or cage, mounting hole (wire hole or light hole).

3. The working mode of the basic form of the turntable bearing

(1) Point-contact rolling working mode of turntable bearing

The point-contact rolling working mode is mainly used for four-point contact ball turntable bearing and cross roller slewing ring. The working principle of the lockable turntable bearing has high requirements on the combination of point contact radial and axial forces, and the quality of the steel balls, and the track angle should be uniform.

(2) Surface contact rolling combined working mode of turntable bearing

The surface contact rolling combined working mode is mainly used for three-row roller bearing slewing ring.

(3) Surface-contact rolling-slip combined working mode of turntable bearing

The surface-contact rolling-slip combined working method is mainly used for turntable bearings. Now the new type of precision turntable bearing has a compact structure and high precision. Therefore, it is suitable to use the surface contact rolling and sliding combined working method.

(4) Rolling-slip combined rolling working mode of turntable bearing

The main rolling-slip combined rolling working mode is mainly used for the ball-column combined turntable bearing. This principle has the advantages of small eccentricity and long service life, and has the advantages of the double structure of the roller and the ball.

The above is all about what is a turntable bearing and its four basic forms of work. We hope it can help you. We, SWBTEC, have rich experience in the production of turntable bearings, with excellent production technology and good product quality. If you have any needs, please contact us for consultation.