Speed reducers are mechanical products generally used for two purposes. The primary use is usually to multiply the amount of torque generated by an input power source to raise the quantity of usable work. They also reduce the input power supply speed to achieve desired output speeds.
When looking at speed reducer vs. gearbox usually the only difference is terminology. It is because all speed reducers are gearboxes. … The objective of the speed reducer is to reduce the rpm that is transmitted between these two 
