Double row, angular contact ball bearing with two plastic comb cages with retaining tabs
View Patent ↗Double row angular contact ball bearing ( 10 ) has split inner rings ( 18, 24 ) and two plastic comb snap cages ( 32, 44 ). The comb cage has retaining tabs ( 38, 50 ) which mate with retaining grooves ( 22, 28 ) in the split inner rings. These retaining tabs hold the inner rings into the bearing.
1. A double row, angular contact snap cage ball bearing comprising:
one outer ring having a first outer raceway axially adjacent to a second outer raceway;
a first inner ring having a first inner raceway radially opposite said first outer raceway and a first retaining groove inwardly, axially adjacent to said first outer raceway;
a second inner ring having a second inner raceway radially opposite said second outer raceway and a second retaining groove inwardly, axially adjacent to said second inner raceway, said first retaining groove inwardly axially adjacent said second retaining groove;
a first ball crown ring having a first plastic snap cage with a plurality of first pockets housing a set of first balls therein, said first balls running in said first outer raceway and said first inner raceway, and a plurality of first retaining tabs extending axially inward and radially downward to lock with said first retaining groove to hold said first inner ring in the bearing;
a second ball crown ring having a second plastic snap cage with a plurality of second pockets housing a set of second balls therein, said second balls running in said second outer raceway and said second inner raceway, and a plurality of second retaining tabs extending axially inward and radially downward to lock with said second retaining groove and hold said second inner ring in the bearing,
wherein the first ball crown ring comprises a first rib, each of said first pockets have a bottom wall affixed to the first rib and an axially inwardly open top, and each of said first retaining tabs extending from said first rib, and
wherein said second ball crown ring comprises a second rib, each of said second pockets have a bottom wall affixed to the second rib and an axially inwardly open top, and each of said second retaining tabs extend from said second rib.
2. The bearing of claim 1 , wherein said first plastic snap cage and said second plastic snap cage are made from polyetheretherketone.
3. The bearing of claim 1 , wherein one of each of said plurality of first retaining tabs is positioned between every other one of plurality of first pockets;
and one of each of said plurality of said second retaining tabs is positioned between every other one of said plurality of second pockets.
4. The bearing of claim 1 wherein said first ball crown ring and said second ball crown ring are in a same radial plane.
5. The bearing of claim 1 , wherein said first balls and said second balls have a same diameter.
6. The bearing of claim 1 , wherein each of said first balls extend inwardly axially beyond the open top of said first pockets, and said second balls extend inwardly axially beyond the open top of said second pockets.