Sealed bearing

1. A sealed bearing, comprising:

a first race having an circumferential outer surface with a first portion of a first diameter and a second portion of a reduced diameter;

a first seal groove encircling the circumferential outer surface on the second portion of the first race;

a second race having an circumferential outer surface with a first portion of a first diameter and a second portion of a reduced diameter;

a second seal groove encircling the circumferential outer surface on the second portion of the second race;

a plurality of rolling elements positioned between the first race and the second race; and

a race retention sleeve engaging the second portion of the first race and the second portion of the second race;

a first circumferential recess spaced inwardly on an inner surface of the race retention sleeve and a second circumferential recess spaced inwardly on the inner surface of the race retention sleeve in parallel spaced relation to the first circumferential recess;

a first O-ring seal positioned in the first seal groove and encircling the first race, and a second O-ring seal positioned in the second seal groove encircling the second race, the first O-ring seal engaging the first circumferential recess of the race retention sleeve and the second O-ring seal engaging the second circumferential recess of the race retention sleeve, the first O-ring seal and the second O-ring seal serving as a barrier to entry of debris and engaging the race retention sleeve to prevent loss of rolling elements through disassembly.