Slewing bearing for Crane, slewing ring bearing,turntable bearing

Slewing bearing for Crane, slewing ring bearing,turntable bearing

Slewing bearing

Rotary bearing, also known as turntable bearing, is also referred to as rotary bearing or swivel bearing by some people.

Basic Structure: Worm, Rotary Bearing, Shell, Motor, etc

A slewing bearing is composed of inner and outer rings, rolling elements, and other components

Rotary bearing is a large bearing that can withstand comprehensive loads, and can simultaneously withstand large axial, radial loads and overturning moments. Rotary bearing generally has installation holes, internal or external gears, lubricating oil holes, and sealing devices, which can make the host design compact, easy to guide, and easy to maintain. There are four series of slewing support bearings: four point contact ball bearings with no teeth, external teeth, and internal teeth, double row angular contact ball bearings, cross cylindrical roller bearings, cross tapered roller bearings, and three row cylindrical roller composite bearings. Among them, the four point contact ball bearings have high static load capacity, the cross cylindrical rollers have high dynamic load capacity, and the pre interference of the cross tapered roller bearings can make the bearings have high support rigidity and slewing accuracy. The three row cylindrical roller combination bearings, due to the increase in bearing capacity, lead to the height of the bearing, and various forces are borne by different raceways. Therefore, under the same force conditions, their bearing diameter can be greatly reduced, making the main engine more compact. Therefore, it is a high load-bearing capacity slewing support bearing. The sentence is:. Rotary bearings are widely used in large rotary devices of lifting machinery, mining machinery, construction machinery, port machinery, marine machinery, as well as high-precision radar machinery and missile launchers. At the same time, various special structural slewing bearings can be designed, developed, and produced according to the specific requirements of users.

Basic structure

Rotary drive is usually composed of components such as worm gear, rotary bearing, housing, motor, etc. Due to the use of slewing bearings in the core components, they can simultaneously withstand axial forces, radial forces, and overturning moments. There are many forms, but the structural composition is basically the same.