... .2 Bobbin witch range:: 950~1900mm 1.3 Up-down motor: 1.5kw AC motor ... bobbin clamping, can lifting bobbin at the same time or individually to adjust the bobboin height . ... , the tension control way is torque control. 3,PN1250/2500 shaftless takeup&traversing stand Bobbin spec.: ... rod traversing, pitch of traversing is adjusted by time relay, interval traversing, change direction automatically, no noise ...