The single row ball contact slewing ring gear and swing bearing is an example of highest quality standard. It is made using precise machining, high controlled hardening process, sufficient inspection in process and qualified materials.

The ball size is generally chosen with respect to the axial load and radial load coming on the Slewing bearing.

It has wide application. The ball swing bearing has high loading capability and high speed. Our swing circle bearings have been applied in construction equipment, lifting loaders, forklift loaders, small cranes, excavators...

The range of Tensun's Single row four point ball contact slewing ring  is 250mm-8500mm. 

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  Ring Material	Diameter	Ball/Roller	Hardness	Seals	Spacer
  42CrMo4/50Mn/C45	250-8500mm	GCr1 or GCr15SiMn	55-60HRC	NBR standard	PA6 Standard
  Environment	Grade	Standard	Standard	Options	Warranty
  Continental/Marine/ Harsh/dust/humidity	P6, P5, P4,  ABEC1,2, 5, 7	ISO 281, ISO 6336, GB/T 2300	EP2 standard	Hardened and ground gear	1 Year

Double-row ball slewing ring gear and swing bearing can carry axial load, tilting moment and radial loads at the same time. The top ball mainly carries the axial load and positive tilting moment. The drop ball takes the opposite tilting moment. This is the reason for the loading capacity of the double row ball slewing ring bearing being larger than the four-point contact ball slewing bearing; however, the frictional ratio is much larger. The double row ball slewing bearing consists of an inner ring, outer ring, balls in double rows, spacers, sealing device, and other components.

The double row slewing ring bearing is mainly for the working conditions when carrying an axial load, larger tilting moment, and where the mounting place is limited in radial direction.

The cross cylindrical roller slewing bearing can carry axial load, tilting moment and radial load all at the same time. The design and application of the cross cylindrical roller slewing bearings are basically the same as those of the four-point contact ball slewing bearing, except that the rolling elements are substituted from balls into rollers and the contact way between the rolling elements and rings is changed from point contact into line contact. Those changes allow for the carrying capacity to be increased, but the wear and the friction moment load are also increased.

Tensun is the expert in high precision preloaded crossed roller bearings for precision applications like robotics, machine-tools, indexing and positioning tables, CNC tilting tables, milling heads, and many others.... Our tailor made design follows perfectly the specific requirements of the customers. 

Cross roller slew ring bearing is able to carry highest capacity in same size relatively.

Bearing features

•    Single row cross roller slewing ring bearing series
•    Suitable for specialized applications which needs high dynamic load capacity and limited size.
•    Three types: internally geared, externally geared and without gear versions
•    This series comes with induction hardened raceways. Geared can be provided with induction hardened teeth.
•    Matching pinions are available for all standard bearings.

Three row roller slew ring bearing is able to carry different loads at the same time, and their load carrying capacity is larger than that of a similar configuration of ball bearing. The roller elements are separated by spacers which can be individual or they can be segmented. Some of the heavy bearings incorporate the use of continuous cage, which are usually made from bronze.

The light thin section turntable slew bearing as swing circle with flange is made using precise machining, high controlled hardening process, sufficient inspection in process and qualified materials.

The ball size is generally chosen with respect to the axial load and radial load coming on the Slewing bearing. It has widely applied in high speed rotary application.

Double axial roller & ball combination slewing ring gear and swing bearing is new structure which is mainly designed for heavy duty high load application like mining and mine, stacker reclaimers...It has very high axial loads & moments as well as small radials efforts.

Our logistic department supplies our product everywhere in the world; we offer complete logistic solutions for the largest slewing rings wherever we have to deliver.