Abstract: The invention concerns an idler (10) having a shell (12) with at least one core (14) within the shell. The shell has at least one inwardly projecting shell formation (32), and the core has at least one outwardly projecting core formation (40), wherein the shell formation and the outwardly projecting core formation are engaged with one another.

Abstract: A conveyor idler includes a drum having an outer surface and an inner surface, a shaft (24) about which the drum can rotate in a forward direction, a locking mechanism for preventing the drum from rotating in a reverse direction (R) but which locking mechanism permits rotation of the drum in the forward direction, the locking mechanism having at least one wedging surface (44) fixed directly or indirectly to the drum, and a locking member (38) interposed between the wedging surface and the shaft, the locking member being rotatable about the shaft when the drum rotates in the forward direction, but when an attempt is made to rotate the drum in the reverse direction the locking member becomes releasably wedged between the wedging surface and the shaft, or a surface fixed to the shaft, thereby preventing the drum from rotating in the reverse direction.

Abstract: The invention concerns an idler (10) having a shell (12) with at least one core (14) within the shell. The shell has at least one inwardly projecting shell formation (32), and the core has at least one outwardly projecting core formation (40), wherein the shell formation and the outwardly projecting core formation are engaged with one another.

Abstract: A conveyor idler includes a drum having an outer surface and an inner surface, a shaft (24) about which the drum can rotate in a forward direction, a locking mechanism for preventing the drum from rotating in a reverse direction (R) but which locking mechanism permits rotation of the drum in the forward direction, the locking mechanism having at least one wedging surface (44) fixed directly or indirectly to the drum, and a locking member (38) interposed between the wedging surface and the shaft, the locking member being rotatable about the shaft when the drum rotates in the forward direction, but when an attempt is made to rotate the drum in the reverse direction the locking member becomes releasably wedged between the wedging surface and the shaft, or a surface fixed to the shaft, thereby preventing the drum from rotating in the reverse direction.

Abstract: A lip member for a contact seal is annular and has at least one inwardly directed lip operable, in use, to bear against a shaft in sealing engagement with the shaft. The lip member has a locating formation for removably locating it in a housing of the contact seal. The housing comprises an outer shell and a holder nestably locatable within the outer shell and co-operating with the locating formation of the lip member and sandwiching at least a portion of the lip member between the holder and the outer shell.