Cage for tapered roller bearing

A tapered roller bearing comprising:

• a tapered outer ring;
• a tapered inner ring radially inward of the outer ring, the inner ring having a radially smaller side and having a radially outwardly projecting lip at the radially smaller side;
• a plurality of tapered rollers each having a smaller end, the rollers being disposed between the inner and the outer rings;
• a window cage disposed between the inner and the outer rings of the bearing, the cage comprising a small side cage ring toward the radially smaller side of the bearing inner ring and beyond the smaller end of the bearing rollers, and a plurality of cage webs spaced at intervals around the cage small side ring, the webs being positioned for separating adjacent ones of the rollers of the bearing;
• the small side ring of the cage comprising approximately radially directed undulations extending around the cage side ring;
• the cage having radially inwardly directed projections which are sized to snap into the space axially inward of the lip of the inner ring, thereby positioning the cage with respect to the inner ring;
• the small side ring of the cage being of sufficiently flexible and resilient material to enable the small side ring to expand sufficiently to permit the projections from the cage to pass over the lip on the inner ring and to enable the small side ring to contract and to define the undulations more sharply for causing the cage projections to snap behind the bearing inner ring lip.