Spherical Plain Bearings utilize inner & outer rings with spherical sliding surfaces, and can accommodate heavy radial loads &bi-directional axial loads at the same time. They are produced in a wide variety of designs & materials to satisfy diverse demands such as those in the automation, construction, mining, transportation,off-highway equipment, farming & machine tool applications. Standard designs utilize carbon chromium steel on steel which is hardened, phosphated and treated with Molybdenum Disulfide (MoS2) to reduce friction. Most designs can be relubricated through annular grooves & lubrication holes in the outer rings.

With specially designed raceways and rollers, HKT Spherical Roller Thrust Bearings are capable of achieving a higher thrust capacity with lower friction and better performance in self-alignment. 

In particular, contract manufacturing is accepted upon written requests enable you to build non-standard bearings. 

HKT spherical roller thrust bearings, typically, are able to accommodate heavy axial loads in one direction and heavy radial loads at relatively high speeds. From the perspective of the internal design, rollers have a shape conformity with raceways to distribute loads along the roller length. Meanwhile, spherical rollers are arranged in a steep angular position, which permits to accommodate high thrust loads and support moderate radial loads. In other words, the loads are able to distribute between the raceways at an angle to the bearing axis. 

Four-point contact ball slewing bearing is composed of 2 seat-rings, if features compact in design, and light in weight. The balls contact with the circular race at four points, via which the axial force, radial force and resultant moment maybe born simultaneously. 

The Double-Row Ball Slewing Ring has three seat-rings. Steel Balls and Spacers may be poured directly into upper and nether orbits. Two rows of upper and nether Steel Balls of different diameters can be assembled according to Undertaking Power situation. The kind of open-pattern-assembly is very convenience. The load-angles of both upper and nether circular orbits are 90 degree, which enable it to undertake very large Axial Force and Tipping moment. When the Radial Force is more than 0.1 multiple of Axial Force, the orbit need to be redesigned. As the axial and radial size of this kind of slewing ring are rather big, and the structure is firm, it is especially suitable for Tower Cranes of over-medium diameter, Truck Cranes, Loading and Unloading Machines, and so on.