We are considering a replacement ball screw for [machine / axis / original code]. Attached are drawing [number / revision] and installed-condition photos. Diameter, lead and handedness are [specification / unknowns]; duty is [stroke, load, speed, cycle frequency and environment]. Please identify the proposed screw-and-nut combination, accuracy, axial clearance or preload, end machining, nut mounting and support-bearing interfaces, stating confirmed details and unknowns. For a nut-only option, please explain compatibility with the existing screw and the required condition assessment, assembly and adjustment. Please quote with a finished drawing, inspection scope, accessories, exclusions and lead-time assumptions. Identify deviations before manufacture; any change will be adopted only after machine-side approval.