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Tongli Slewing Ring Co. Ltd. is a specialized slewing ring manufacturer, capable of designing, developing and manufacturing all types of slewing rings. With deep rooted company culture that 'professionalism and commitment lead to success', Tongli strives to offer customer satisfaction with superior technology, excellent product quality and superb service.

Tongli has a manufacturing capacity of making 60,000 pieces of slewing rings per year, up to 4,000mm in diameter for different structure.The products is classified into single row, cross roller, three row roller, and double row types as well as the type applied with elliptical raceway which cover 2,000 different sizes and internal structures. Tongli slewing rings are widely used by OEMs in all types of excavators, mobile cranes, tower cranes, rail cranes, water treatment equipments, and machine tools etc.. The replacement slewing rings for different models of excavators, wind mills, solar system and mobile cranes provide the end users and distributors with more options. With batches of products exported to Europe, America and Asia, Tongli Slewing Ring is a well known national brand foot-printing all over the world.
Tongli is a high-tech company, with strongly research and development capacity delivered by our own Institute of Slew Ring Research. Our brainchild the elliptic ring is the result of 18 years of groundwork. It exhibits outstanding load caoacity and price superiority, improve 30% load capacity, service life can be prolonged once, save more than 30% purchase cost.It can reduce the purchase costs of machinery manufacturers by an astounding 30% and upgrades the present products. Our products are implemented by the Liugong Group, XCMG, HITACHI, the Zoomlion group, BAUERU, and others.
Advanced equipment, superb technics, perfect measuring, vigorous team successfully formed our commitment to be top-rank in China, well-known to the world. Provide us with your load requirements and key specifications, we will do the else!

Main Products
  • Single Row Ball Slewing RingThe single row four point contact ball slewing ring consists of two rings. It has tightened mechanical structure and low weight. Its rolling element is a row of steel balls which connect the elliptic raceway with four points. Therefore, our single row ball slewing ring can bear axial, radial and turnover moment simultaneously...
  • Double Row Eight Point Contact Ball Slewing RingThe double row eight point contact ball slewing ring is make up of dual rows of the same sized steel balls and each of the balls is segregated from another one by a spacer. The spacer fixed on the raceway not only can separate the adjacent balls, but also used as a holder of the balls. The internal and external rings are one integral whole and the balls...
  • Three Row Roller Slewing RingThe three row roller slewing ring is made up of three rings. The upward, downward and radial rollers are separated from each other. Which can determine the load of each row of rollers exactly, the upper row and under row of rollers are arranged evenly in order to bear the axial force from two directions and turnover moment perfectly. The radial force left is offset by the third row of rollers...