-The reducer can help to lower the torque and will speed up the motor. A Servo Selection Example(6) 10mm, Pitch of Ballscrew The resolution of encoder: 10mm / 0.0001mm= 100000 (division / revolution) -The dimension and frame size. -The resolution of encoder. The position accuracy is requested to 0.0001mm. -The IP protection level. z The Miscellaneous