Features and Applicable Scope: 1.The application condition; 1.1. The gear's circumference speed<20m/s; High speed shaft's speed<1500r/min. 1.2. Bidirectional rotation 1.3. The output shaft can be hollow or solid type 2. The features 2.1. Casing not only has compact construction, artistic outline, but also has higher rigidity 2.2. Main spare parts such as gears, shafts are made of high-strength alloy steel and treated with carburization, quencher, gear grinding. We also design the gear units according to the requirements.