초록 ▼

A reliable bearing wheel assembly comprising a shaft, an inner race, an outer race, and rollers or other bearing elements between the inner and outer races, wherein the inner race is reliably prevented from both rotating and moving axially relative to the shaft, even when there is bearing failure. A

A reliable bearing wheel assembly comprising a shaft, an inner race, an outer race, and rollers or other bearing elements between the inner and outer races, wherein the inner race is reliably prevented from both rotating and moving axially relative to the shaft, even when there is bearing failure. A first pair of axially extending grooves are provided in the outer surface of an end portion of the shaft and in the inner surface of the inner race respectively which in combination define a first keyway. A second pair of axially extending grooves are provided in the outer surface of the shaft end portion and in the inner surface of the inner race respectively which in combination define a second keyway. A first key is received in the first keyway. A fastener having a threaded shank portion threadedly engages a threaded bore which extends axially in the shaft end portion. A head portion of the fastener engages the inner race and at least partially covers the first keyway to block escape of the first key therefrom. A second key is received in the second keyway, and a portion thereof extends axially outwardly of the second keyway and abuts the head portion to prevent turning of the fastener to prevent loosening thereof as well as to prevent uncovering of the first keyway and escape of the first key therefrom.

대표청구항 ▼

1. A bearing wheel assembly comprising a shaft, an inner race mounted on said shaft, an outer race, bearing means between said inner and outer races, means for preventing rotation of said inner race relative to said shaft, means for preventing movement axially of said inner race relative to said sha

1. A bearing wheel assembly comprising a shaft, an inner race mounted on said shaft, an outer race, bearing means between said inner and outer races, means for preventing rotation of said inner race relative to said shaft, means for preventing movement axially of said inner race relative to said shaft, and means for preventing loosening of said axial movement preventing means, wherein said shaft includes an end portion having a radially outer surface, said inner race has a radially inner surface, said rotation preventing means comprises means defining a pair of axially extending grooves in said shaft end portion outer surface and in said inner race inner surface respectively which in combination define a keyway, and a key receivable in said keyway, the assembly further comprising means for covering said keyway to prevent escape of said key therefrom, wherein said axial movement preventing means comprises a fastener and said keyway covering means comprises a head portion of said fastener, and wherein said loosening preventing means comprises means defining an other pair of axially extending grooves in said shaft end portion outer surface and in said inner race inner surface respectively which in combination define an other keyway, and an other key received in said other keyway and which abuts said head portion to prevent turning thereof.