High-quality Four-point Contact Ball Slewing Bearing

Typical Clients:  

India customers

Production Description:

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.
It is mainly used for slewing conveyers, welding arm and positioned, medium duty cranes, excavators and other engineering machines.


1. Slewing ring bearings dia.200-6200mm
2. Top quality and high technology
3. Focus on clients needs and satisfaction
4. Military quality  
Slewing bearings can accommodate axial, radial and moment loads acting singly or in combination and in any direction. They are not mounted in housing or on a shaft, but directly to a seating surface. The inner and outer rings are supplied with mounting holes. Both rings may have integral gears. They are also referred to as slewing ringsand tabletop bearings. Slewing ring bearings can perform oscillating (slewing) as well as rotating movements. They may be used without gears or with internal or external gears.
Swing bearings(slewing rings, slewing ring gears, swing ring, turn table bearings) for Komatsu, Hitachi, Kobelco, Caterpillar, Volvo/Samsung, Daewoo/Doosan & Hyundai Excavators.
Slewing ringsare usually used for low revolution while shaking and strained with an enormous axial force, moment and in some parts with radial force simultaneously.
   Consequently the requirements for loading are stricter than ordinary bearings. If the selection of the bearing has been wrong it will cause a great damage. Hence it is necessary to evaluate the exact forces acting on the slewing ring and to select the suitable slewing ring.