When to use screw jack with anti-rotation(keyed) device?
Sometimes customers look for screw jacks with anti-rotation function. Then lets us see more about anti-rotation device. When Work Screw rotation must be prevented, the Jacks can be realized with keyway along the Work Screw, a matching key (6) is fastened to the cover of the Jack which will eliminate Work Screw rotation. This design is only available for translating screw jacks . If the structure/object connected to the lead screw is not prevented from rotating or the lead screw is not always in contact with the structure then a screw jack with an “ Anti-Rotation ” mechanism (keyed) should be used. For machine screw jacks the mechanism uses an internal key to prevent the lead screw from rotating. Anti-rotation device is suggested for limited strokes and low speed. The Anti-rotation device causes greater than normal wear on the Work Screw, somewhat reducing Jack life. For ball screw jacks a guided element fixed to the ball screw is used to prevent the b...