There are many industry applications that require a critical need for precision, quiet operation, maintenance free performance, and life-long consistent performance from linear driven systems. Some common applications include medical and lab automation, bottling and food processing, automated retail and kiosks, and scanning and imaging. Within these applications, there are specific needs for vertical lead screw actuator applications.
In vertical lead screw actuator applications, lead screw selection is crucial to the safety and success of the system. Prevention of load drift, or screw back drive, during a power loss condition starts with proper selection of a screw’s lead. As a rule of thumb, the lead selected should be at least 3 times smaller than the screw diameter. Less aggressive, finer leads offer increased load drift resistance & safety, however it will result in a negative effect reducing linear carriage travel speed. Alternatively, a more aggressive, coarse lead will offer faster carriage travel speeds, but will not typically provide any resistance to load drift.