The disadvantage of gear box casing

The disadvantage of gear box casing
The obvious disadvantage of gear box casing may have an elevated nose or a depressed nose to accommodate the at least one off-set axis. The former arrangement gives the advantage that at the drive head of the conveyor, the output shaft is elevated above the adjacent transfer conveyor, thereby presenting little or no obstruction to the material, e.g. coal, being conveyed by the transfer conveyor. Furthermore, in circumstances where the tail end of the conveyor is also driven, the construction in accordance with the invention gives the advantage that the housing need no longer be angled with respect to the conveyor, while the latter arrangement gives the advantage that at the tail end of the conveyor the intermediate gears may be in an advantageous location for purposes of bearing lubrication. With either arrangement it is preferred that only the output shaft is off-set.