CASTER HAVING REPLACEABLE SHIELDED BEARING

摘要

A caster (100, 200, 300) includes a yoke (102) for retaining a wheel, a bearing housing (400) connected to the yoke (102) and a replaceable shielded bearing (120) occupying the bearing housing (400). The inner wall (408) of the bearing housing is provided with a groove (410) into which a retaining ring (130) may be inserted to prevent the shielded bearing (120) from escaping. A caster mounting assembly (190, 290, 390) having a connecting member (140, 240, 342) which passes through a central opening (124) of the shielded bearing (120) is configured to connect the yoke (102) and the bearing housing (400) to a rollable article, such as chair or table. In the event that the shielded bearing (120) needs to be replaced, the caster (100, 200, 300) may be disassembled, the retaining ring (130) removed from the groove (410), a new shielded bearing substituted for the old shield bearing, the retaining ring (130) replaced in the groove (410), and the caster (100, 200, 300) reassembled.