The motor can operate smoothly from the lowest speed to the highest speed, with minimal torque fluctuations, especially at low speeds such as 0.1r/min or lower, where there is still a smooth speed without crawling phenomenon.
The motor should have a large and long-lasting overload capacity to meet the requirements of low-speed and high torque. Generally, DC servo motors require an overload of 4-6 times within a few minutes without damage.
In order to meet the requirements of rapid response, the motor should have a small moment of inertia and a large locked rotor torque, and have the smallest possible time constant and starting voltage.
The motor should be able to withstand frequent starting, braking, and reversing.