The ZBX Series anti-backlash assembly is a linear actuator for design operations requiring precise positional accuracy and repeatability, at a minimum cost. The inherent damping qualities of the ZBX design make it ideally suited for vertical applications requiring noise or vibration control. The standard unit utilizes a patented self-lubricating polyacetal nut that is radially preloaded on a 303 stainless steel screw. The ZBX assembly offers exceptional torque consistency and repeatability when traversing in either direction through its unique load transfer capability.