Understanding the main types of loads, motors, and applications can help simplify the selection of industrial motors and accessories. There are many aspects to consider when choosing an industrial motor, such as application, operation, mechanical and environmental issues. Generally speaking, you can choose AC motors, DC motors or servo/stepping motors. Knowing which one to use depends on the industrial application and whether there are any special needs. Depending on the type of load the motor drives, industrial motors require a constant or variable torque and horsepower. The size of the load, the required speed and acceleration/deceleration—especially when the speed is fast and/or frequent—will determine the required torque and horsepower. It is also necessary to consider the requirements for controlling the speed and position of the motor.