Bearing casing assembly for conveyor rollers and conveyor roller assembly

A bearing casing assembly for a conveyor roller tube comprising:

• a casing adapted to be inserted at least in part into an end of a conveyor roller tube,
• the casing comprising a casing body and a casing seat,
• the casing body comprising a shoulder at the distal end of thereof extending circumferentially and radially outwardly for abutting against an end of the roller tube, an inner flange extending circumferentially and radially inwardly near the distal end from the casing body and an internally threaded proximal end,
• the casing seat comprising a threaded portion for threadingly engaging the threaded proximal end portion of the casing body and a bearing engaging portion adapted to abut the bearing for selectively adjusting a preload on the bearings and the stub axle by rotating the casing seat about the casing body,
• a stub axle positioned within the casing and comprising a tip projecting outwardly from the casing,
• a pair of bearings mounted in a spaced apart relationship on the axle such that the axle is rotatable with respect to the casing,
• an outer seal member coupled to the axle extending circumferentially and radially outward toward the casing body, the outer seal member comprising labyrinth seal elements on the upper and lower surfaces thereof, the lower labyrinth seal elements of the outer seal member rotatably engaging labyrinth seal elements of the upper surface of the inner flange to form a lower labyrinth seal,
• a shield cap adapted to be coupled to the inner surface of the casing body at the distal end thereof, the shield cap comprising labyrinth seal elements to engage the labyrinth seal elements of the outer surface of the inner flange of the casing body to form an upper labyrinth seal.