Introduction
RK Series bearings have a flanged cross-section on one or both rings and
range in size from 20 ¨C 47 inches OD (500 ¨C 1200 mm). The flanged design
reduces weight and provides the equipment designer greater flexibility for
configuration of adjacent mounting structures and bolting arrangements. 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.
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¡ã 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
RK Series bearings are generally available from stock, and mating pinions for the
geared versions are also generally available.
Applications
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
RK Series bearings have a flanged cross-section on one or both rings and
range in size from 20 ¨C 47 inches OD (500 ¨C 1200 mm). The flanged design
reduces weight and provides the equipment designer greater flexibility for
configuration of adjacent mounting structures and bolting arrangements. 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.
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¡ã 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
RK Series bearings are generally available from stock, and mating pinions for the
geared versions are also generally available.
Applications
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