Introduction 

SCB-RK Series bearings have a flanged cross-section on one or both rings and  range in size from 20 – 47 inches OD (500 – 1200 mm). The flanged design  reduces weight and provides the equipment designer greater flexibility for  configuration of adjacent mounting structures and bolting arrangements. SCB-RK  Series bearings are well suited for many applications where a large diameter  and lighter weight are predominant factors in selection of a bearing.

Design Features 

The internal configuration is a deep-groove gothic arch raceway, which  provides four points of contact with the balls, enabling the bearing to  simultaneously carry radial, axial, and moment loads. The use of spacer balls  alternated with load balls allows for lower rotational torque and superior  performance in applications involving oscillatory movement. Integral face riding seals are provided to assist in the exclusion of contaminants. 

SCB-RK Series bearings are offered in non-geared, internally geared, and externally  geared configurations for maximum design flexibility. The gears are Involute  Stub designs with 20° pressure angles, manufactured to AGMA Class Q5  quality and .005 to .015 inches allowance for backlash. 

All models feature four fittings for lubrication, spaced 90 degrees apart. On  non-geared and internal geared models, they are located on the outer  counterbore diameter (Dr ). On external geared models, they are located on  the inner counterbore diameter (dr ).

Availability 

SCB-RK Series bearings are generally available from stock, and mating pinions for the  geared versions are also generally available.  

Applications 

SCB-RK Series bearings have been used successfully in a variety of light to medium  duty applications including: 

❚ Small cranes, booms, and lifts 

❚ Industrial positioners and rotary tables 

❚ Chute swivels 

❚ Stretch wrapping machines 

❚ Bottle filling machines 

❚ Conveyors and related material handling equipment 

❚ Rotating displays