The principle and method of Anti Backlash Ball Screw to eliminate the gap

Anti Backlash Ball Screw is your good choice.In order to ensure the accuracy and axial rigidity of the ball screw reverse transmission, the axial clearance of the ball screw nut pair must be eliminated. The method of eliminating the gap often adopts a double-nut structure, using the relative axial displacement of the two nuts to make the balls in each nut contact the left and right sides of the screw raceway respectively. When using this method to pre-tighten to eliminate the axial gap, the pre-tightening force should generally be 1/3 of the maximum axial load. When the requirement is not too high, the pre-tightening force can be less than this value.

(1) Double nut washer type anti-backlash
This form has simple and reliable structure, good rigidity, and is the most widely used. The pre-tightening force can be adjusted in advance by the professional manufacturer according to user requirements for the form of adding a gasket between the double nuts. It is very convenient to use and unload.

(2) Double nut threaded anti-backlash
As shown, the external thread on one nut is used to adjust the relative axial position of the two nuts through a round nut to achieve pre-tightening. After adjustment, another round nut is used to lock the structure. This structure is convenient to adjust and can be used during use. , Adjust at any time, but the pre-tightening force cannot be accurately controlled.Anti Backlash Ball Screw is your good choice.