Linear motion products are used in conveyors and assembly operations to provide movement in a straight line, including rolling elements in a raceway or guide rail in conveyors and assembly operations. They also keep parts and machinery moving and aligned. Precision linear shafts guide bearings and slides in single-axis motion and positioning applications. Linear bearings fit around linear shafts to facilitate motion. Linear guide systems and components transport loads and provide precise movement along a linear axis. Ball screws and lead screws pair with corresponding threaded nuts to convert rotary motion into linear motion. Linear actuators and screw jacks convert rotating movement, such as that coming from a motor, to movement in a straight line.