80mm servo motors are typically used with encoders. Encoders are devices that measure the position of the motor's shaft. This information is used by the motor's controller to keep the motor rotating at the desired speed and position.

80mm servo motors are a versatile and powerful type of motor that can be used in a wide variety of applications. They are a good choice for applications where precise control is required.

Here are some of the applications where 80mm servo motors are commonly used:

Robotics: 80mm servo motors are used in a variety of robotic applications, such as robotic arms, drones, and industrial robots.

CNC machines: 80mm servo motors are used in CNC machines to control the movement of the cutting tool.

Industrial automation: 80mm servo motors are used in a variety of industrial automation applications, such as assembly lines, packaging machines, and material handling systems.

Medical equipment: 80mm servo motors are used in medical equipment, such as robotic surgery systems and MRI machines.

Aerospace: 80mm servo motors are used in aerospace applications, such as aircraft control systems and satellite stabilization systems.