​The high bearing capacity of the hardened gear reducer is due to the fact that the gears are quenched or carburized after finishing to increase the hardness. Hardened gear reducer refers to the reducer whose internal gear hardness is >350HBS, and the large and small gears have been quenched or carburized.

Its advantage is that the design of the gear is carried out from the two aspects of gear tooth surface pressure and tooth root strength, which greatly enhances the hardness and precision of the gear, which can greatly reduce the weight of the reducer and make the reducer more flexible. It is more miniaturized, and the performance of the reducer has also been greatly improved, and the transmission efficiency has been improved by one level. On the other hand, it greatly reduces the user maintenance and repair costs. With the continuous development of gear processing technology and the application of computer design, the development of the world's transmission technology tends to use hard-tooth surface gear transmission.