Outer Gear Turntable Bearing Slewing Ring For Excavator

The swing bearing, also known as a slewing ring bearing, is a rotational bearing component typically used in heavy machinery such as excavators. This bearing facilitates the rotation of the upper part of the excavator independent from the lower part.

Single row four-point contact ball rotary support structure characteristics, performance, applicable scope.

    Single row four-point contact ball rotary support consists of two sets of rings, compact structure, light weight, steel ball contact with the arc raceway at four points, can withstand axial force, radial force and heeling moment at the same time. Rotary conveyer, welding operator, medium and small crane, excavator and other engineering machinery can be selected.

Note:

1. N1 is the number of lubricating oil holes. Oil cup M10 * 1 JB/T7940.1~JB/T7940.2. The user can specify the location of the oil hole according to the application situation

2. N-powder can be changed to threaded hole, with diameter M and depth 2M

3. The circular force of gear is the maximum circular force, and the rated circular force is 1/2.

4. "k" is the cutting coefficient.

Product series 1. Single Row Four Point Contact Ball Slewing Bearings.
2. Single Row Crossed Roller Slewing Bearings
3. Double Row Ball Slewing Bearings
4. Three Row Roller Slewing Bearings
5. Thin Section Slewing bearings (Light type).
6. Thin Section Slewing Bearings (Flange type)
Gear Options External gear,Internal gear,Without gear
Raw material 50Mn, 42CrMo
Hardness 55HRC-62HRC
Rolling element Ball or roller
Warranty 1 year
Delivery Time 15-45DAYS
Payment Terms L/C,T/T,Western Union 
OEM/ODM Available
Packaging Details 1:Filling with rust-proof oil
2:Packing with protective layers
3:Fixed in wooden box


It is a large diameter bearing that can handle different loads (axial, radial and moment loads) simultaneously. The swing bearing is an essential part of the excavator as it is responsible for the precise control and positioning of the excavator's boom and bucket, allowing the machine to dig, lift, and move materials efficiently.

It is designed to be robust and durable, as it needs to withstand the heavy loads and harsh working conditions of construction, mining, and other heavy-duty applications. Regular maintenance and inspection are crucial to prevent bearing failure and extend the service life of the swing bearing.
The single row four point contact ball slewing bearing is composed of two seat rings, which design in compact structure and light weight, steel ball contact with the circular raceway at four point, it can bear the axial force, radial force and the tilting moment at the same time.It can be used for slewing conveyer, welding manipulator, light & medium duty crane, excavator, and other construction machinery.
1. n1 is the number of lubricating holes.Oil cup M10×1JB/T7940.1~JB/T7940.2.The Oil nipple's location can be changed according to the user's application.2. n-φcan be changed to tapped hole,the diameter of tapped hole is M,depth is 2M.3. The tangential tooth force in the form is the maximum tooth force,the nominal tangential tooth force is 1/2 of the max one.4. "K" is addendum reduction coefficient.