Ball screw drive

摘要

The screw (1) has a spindle nut (2) provided with multiple return units (8) distributed over the outer circumference of the nut. The return units have ends connecting a start of a turn (3) of each of several ball grooves (4) to an end of the turn so that a continuous ball duct (7) is formed for recirculation of balls (5). One of the return units is resiliently supported using spring units on a support (15).