The fixed ends resist bending moment loads so the ball screw tries to remain perpendicular to the planes of the support bearings. However, fixing at both ends can be more expensive and difficult ...

Thus ball-screw tracks usually have a curvature perpendicular to the balls' direction of movement. Track conformity, the dimensional relationship between ball and track, is expressed as the ratio ...

Additional design elements include mounting studs that can compensate for misalignments in the vacuum system, such as when a port is not exactly perpendicular ... ball bearings. This mechanical ...