1.Structural features of external gear slewing bearingexternal gear slewing bearing can bear larger rotary torque ,meanwhile, with special sealing structure has good sealing performance. External tooth with double row ball slewing bearing,,has two rows equal-diameter rolling bodies, can bear large a

The single row four point contact ball slewing rings is composed of two seat rings, which design in compact structure and light weight, steel ball contact with the circular raceway at four points; it can bear the axial force, radial force and the tilting moment at the same time.It can be used for sl