operation oil or other lubricating fluids are provided in the gearbox 10 to lubricate the gears 16 and 17 input shafts 12 and 14 and bearings 18 and 20 as the gears 16 and 17 rotate the lubricating fluids next to the gear are rotated due to the friction characteristic of the fluid provided inside the gearbox 10 therefore causing the fluids to rotate or swirl the swirling lubricating fluids are caught in the recesses 22 and the swirling motion causes a pressure differential with higher pressure on a lower side and lower pressure on an upper side such that the lubricating fluids are naturally circulated through the channels 24 past the bearing 18 to the upper bearing 20 and back the distance between the shoulder 26 and shaft 12 is selected such that the viscosity of the lubricating fluid restricts the opening between the shaft 12 and the shoulder 26 of the quill 28 thereby providing a resistance to the flow of fluid back down into the gear case along the shaft and permitting a circulation of fluid through the channel 24 as a result of the rotating motion of the gears 16 and 17 both the lower bearing 20 and the upper bearing 18 can be easily lubricated without requiring any additional lubricating fluids grease seals or pumps furthermore when operated horizontally lubricating fluids move easily through the channels 24 to lubricate the bearings 18 and 20 although the present invention has been described with reference to a right angle.