F-series gear reducer is one kind of parallel shaft helical gear reducer, which consist of 2 or 3 stages helical gears (relate to gear ratio) in the same case. The hard tooth surface gear use the high quality alloy steel , the process of carburizing and quenching, grinding ,which give it follow characters : Stable transmission , low noise and temperature ,high loading ,long working lift . Wide application,specialize in Metallurgy,Sewage treatment, Ceramic Industry, Chemical Industry, Pharmacy,Agriculture equipment and Oil industry .