Dual start ball nut with external return

Let’s sort it out: Ball recirculation is the single most important design detail when it comes to ball screw performance. Why?  Because it determines how smoothly the balls recirculate as well as running performance and product lifetime.  And there is still no generally accepted nomenclature for this characteristic. Result? Engineers use hands and feet, lengthy explanations and quickly drawn sketches to make sure everyone understands what they are talking about. Continue reading →