Abstract: A new symmetrically loading epicyclic traction drive reducer is introduced. It has advantage of high drive ratio of other epicyclic gears. It loads three epicyclic gears and two steel tapers and drives through traction oil. It has more work surfaces and higher drive ratio. Its contact stress is decreased because the same curved surfaces is used at the contact region. It has simpler structure, easier making and installation,lower noise than ordinary gear drive. Especially, unlike ordinary epicyclic gear, its installation will not be limited by the number of gears.