The ThinGap Embedded Motor’s unique construction with NO WIRE-WOUND COILS means:
Flexibility in design - the motor is an open-frame rotor/stator set with a large center opening.
High power density - there is no magnetic saturation and torque is linear with current until temperature limits are reached.
Superior cooling - outer and inner rotating irons combined with the open-frame design, smoothness and extremely low torque ripple (<0.045%) - there is no magnetic attraction between the rotor and stator. Read about all the advantages of the ThinGap Embedded Motor here.