The Premotec Coreless DC motors have a maximized performance due to the use of precious metal commutation in combination with high performance magnets. As these motors are coreless there are no iron losses, no preferred rotor position and due to the use of many phases, the torque ripple is reduced to a minimum. The torque for these motors ranges from 5 to 100 mNm. Output power ranges from 1.55W to 25W. The speeds range from 1800 to 4200 rpm.