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This picture shows a reduction gearbox for gas-turbine generator capable of transmitting 90 MW, one of the biggest capacity in domestic. In the gas-turbine generating units made by Hitachi, the gearboxes exclusively developed by our technology are utilized. They have been supplied all over the world and enjoying the best reputation. Other than this, we are manufacturing vertical offset type in which the pinion shaft is located just on the gear wheel shaft. The gears are carburized, case-hardend and ground with high reliability, and all the bearings are of sleeve type. The thrust load due to meshing of the gears can be supported by the tapered-land type bearing provided on the side of the sleeve bearings. Accordingly, it has high reliability.