A single-stage cylindrical gear reducer, mainly by the owners, driven shift gears, bearings, ring, cover, owners, vice shell, spline shaft, which sets the spline flange, gland, the bearings Block Group into. Characterized by active gear shift is a step-like, one end of the Department of shift gears and gear driven link, and the other end with bearings, ring fixed connection, the bearings and bearing the coat connection, bearing housing and sub-surface connection. Because of this reducer the main, from the use of gear shift gear and take the initiative to shift gears to increase the other side of the Department of bearings, bearing, cantilever past, and to strengthen the work of gear strength, increased the life span of reducer. The following is a design statement: Modified parameters: the work of a conveyor belt pulling force: 2300N Conveyor belt speed: / s Roller diameter: 400mm Daily working hours: 24h Transmission Work Experience: 3 years