Speed reducers are mechanical products that help drive systems maintain optimal quickness and torque for the application. Also referred to as gearboxes and gear drives, they lower the swiftness of rotation of the input shaft by a specific ratio and raise the power transmitted to the result shaft by the same ratio. Ratio multipliers increase the speed decrease and torque supplied by a quickness reducer by a certain ratio and are suitable for parallel setups. Mounting bases, torque arms, and flange couplings are components used with speed reducers. They are often used in applications where the speed reducer will never be directly mounted on the drive mechanism.
Many gearbox designs enable the engine to be directly mounted to the reducer. These designs incorporate either extremely specific flanges to allow the engine to be directly connected to the reducer or various other adapters with integral couplings. This eliminates the necessity for separate mounting of the motor, but is normally only practical with smaller motors.
Integrating Speed Reducers
After selection, the next issue is the way the gearbox will be integrated into the machine. Always check how the gearbox will be mounted and how it’ll be connected to the driver and powered load because it can vary from machine to machine.
torque
speed
horsepower
reducer efficiency
service factor
mounting position
connection variable
life required
In some 
applications the quantity of backlash, transmission error, torsional rigidity, and minute of inertia are also important. The amount of torque needed could very well be the most crucial criteria, as this translates to the amount of work the quickness reducer must perform.
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