STM’s RXO/O 800 Series gearboxes for bucket elevators are derived from the standard RX Series, but enhanced with the addition of a secondary auxiliary gearbox to modify transmission speed. This innovative design enables the gearbox to operate at two distinct speeds: a primary speed optimised for standard operations and a much slower secondary speed specifically designed for precise positioning tasks. This dual-speed capability ensures efficient performance while offering greater versatility for demanding industrial applications.