For precision applications requiring very high accuracy and speed, linear motors provide the best solution. A linear motor is essentially a servo motor unwrapped. Instead of a cylindrical rotor nested inside a stator, it consists of a forcer that travels along a straight magnet track. The motors generate linear motion directly, which eliminates the need for actuators and couplings. This removes many sources of mechanical error from the system, enabling linear motors to achieve submicron accuracies. They are also very fast, offering speeds of up to 5 m/s.