OG has grown to become a leading gear manufacturer by establishing production engineering of shaving finish for the gears related to construction machines and large off-highway vehicles. OG's long range strategy is to advance and develop in higher quality production gears requiring more precision than convetional gears. To meet this goal, OG, for the first time in Japan, had introduced Magg gear grinding machines and expanded to introduce Kapp latest model today. Kapp gear grinding machines improve durability of the gear strength and productivity along with high precision gear.