3M860 is a subdivided drive with uniform angles and constant torque, with drive voltage DC 18-80V, matching various types of 3-se hybrid stepper motors with current below 6A, OD 57and86MM. The drive internally adopts the servo control-like circuit, which can make the motor running at low speeds smoothly with almost no vibration and noise. Motor high speed torque is greater than other 3-se and 5-se hybrid stepper motors and traditional reaction stepper motors. Positioning accuracy up to 12800 / cycle (when matching 86 series high torque motor, the performance will be affected).