Ball Screw Preload:

To eliminate the increased gap in the screw and enhance its rigidity, either insert a set of one larger size steel balls (about 20) into the screw cap, or utilize the internal force on the screw produced by applying displacement forces in the screw shaft direction to two nuts.

Ball screw pre-tension dynamic torque:

The torque required to continuously rotate the ball screw shaft or nut under external no-load conditions, after the predetermined preload is applied to the ball screw.

Ball Screw Standard Torque:

Torque diagram for the predetermined preload as targeted.

Ball Screw Torque Variation Value:

The variation value of the pre-tensioned dynamic torque, taken as the positive or negative value relative to the base torque.

Ball screw torque variation rate:

Ratio of variation to the base torque value.

Ball screw actual torque:

实测Roller Screw's preload dynamic torque.

Average Ball Screw Torque:

The arithmetic mean of the magnitudes of the actual torque values obtained from the reciprocating motion of the nut within the effective length of the threaded section.

Ball Screw Actual Torque Variation Value:

Within the effective length of the threaded section; the large variation value obtained by measuring the reciprocating motion of the nut, with the lower value taken as the positive or negative value relative to the actual torque.

TBI Ball Screw Actual Torque Variation Rate:

In comparison to the variation ratio of the average actual torque.