因沉淀物生成极少，齿轮与轴
承寿命得以延长；
油封寿命较长组件寿命较长;
降低启动磨损，启动容易;
减少所需齿轮润滑油种类;
The gear and bearing life can be extended to extend the oil seal due to the little sediment generation.
longer component life.
reduce start wear easy to start.
reduce the requied gear lubricating oil type.
