• AddressNo.369 Liancheng Road, Tongshan,Xuzhou City, Jiangsu,China
  • Factory AddressNo.369 Liancheng Road, Tongshan,Xuzhou City, Jiangsu,China
  • Worktime9:00-18:00
  • Phone(Working Time)+86-516-8788 8898
  • Phone(Nonworking Time)+86-516-8788 8868
  • Fax+86-516-8788 8878

Company Profile

EFV SLEWING BEARING CO., LTD. is a specialized precision slewing bearing manufacturer include designing, RD and producing ,which located in Xuzhou City, Jiangsu Province-a very famous Construction Machinery Base.

Our Slewing Bearings have several series such as Single Row Ball Series, Double Row Ball Series , Three Row Roller Series, Single Row Cross Roller Series, Light Type Series and Light Type F Series, product size is ranging from 200-4000mm with standard and non-standard models.        

Our products are mainly used for Excavators, Mobile Cranes, Tower Cranes, and widely used for Construction Machinery , Light Industry Machinery, Metallurgical Mining Machinery, Environmental Protection Machinery, Petrochemical Machinery, Engineering Vehicles, Ship Port Machinery and more gradually.

Our products are manufactured according to JB/T2300—2011 JB/T10471—2004JB/T66—1999、JG/T67—1999 with high precision, long time and high price/ performance rate, which have been sold to many provinces in China and exported to Europe, Asia, the Americas and Oceania and other areas, and obtain high praise and recognition from customers domestic and abroad. ,  Our team with Unity, Dedication, Pragmatism, Efficiency always offer best service and guarantee for our customers from ordering, purchasing, manufacturing and after-sale process.

Company Details

  • Manufacturer
  • North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe, Central America, Northern Europe, Southern Europe, South Asia, Domestic Market
  • 600
  • 3,000,000,00
  • 1988
  • 68%



Four-point contact ball bearings are suited to axial,radial, and moment loads. The four point contact is distributed between the balls and the two split raceways.

The precision grinding and geometry of the ball and deep grove raceway allow for the application of increased thrust and moment capacity. Typical applications for these bearings are: Machine Tools, Radar, Medical

Equipment and Construction Equipment. Sizes range from 260mm to 4850mm.

Four-point contact  Bearing
Cross roller Bearing
Double row Slewing Bearing
Triple-row Slewing
Rothe Erde Slewing Ring Bearing
Kaydon bearing
Crane and excavator slewing


The multiple-varied designs and use of specialty steels currently available today has allowed EFV to provide industry and commerce with the ability to increase loading capacities, reduce size and extend life expectancy beyond previously used Slewing Bearing designs. These bearing designs and their application must take into account a number of complex dynamic forces e.g.: Axial/Thrust Loads, High Radial Loads, and Moment Loads. Todays Slewing Bearings are used in some of the following industries and applications: Construction Industry, Excavation Industry, Wind Turbines, Medical Equipment, Radar, Military Applications, Rail/Transit Industry and Oil industry to name but a few.

There are a number of basic designs that are best suited to individual applications, these can often be adapted by a mixture of categories to optimize performance, improve reliability and provide the most cost effective, efficient solution. The following are some categories available today: Four and Eight Point Contact Ball, Three Row Roller, Bi-angular Roller and Taper designs.

Drives are provided by inner or outer gear-drive, or driven directly by the inner or outer-ring.

Our Team

The single row four point contact ball slewing bearing (slewing ring slew gear turntable bearing swing 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.

The Thin Section Slewing Bearing (slewing ring slew gear turntable bearing swing bearing ) has the same structure with the ordinary slewing bearing,but the weight is light,and rotate flexibly,which widely used in the food machinaery,canning machinery and environmental machinery etc.

Thin section bearing
slew drive for solar tracker
skf slewing bearing
excavator swing bearing
crane slew ring
geared slewing ring
liebherr slewing bearing