RNFBL 2505A5S is an NSK R-series rolled ball screw nut (Round flanged nut with recirculation tube): for 25 mm shaft diameter and 5 mm lead, accuracy grade Ct10, 5 effective ball turns, with seal (s), with basic load ratings of Ca 15.1 kN (dynamic) and C0a 36.3 kN (static). This is a nut-only item (screw shaft not included), used with NSK RS-series rolled screw shafts for economical transfer drives.
Not sure about accuracy grades? See our guide: How to choose ball screw accuracy grades (C0–C10) (in Chinese).
Other nut models for the same shaft dia. × lead
Other nut models for 25 mm shaft dia. × 5 mm lead: RNCT 2505A5, RNCT 2505A5S, RNFBL 2505A2.5S, RNFTL 2505A5, RNFTL 2505A5S, RNSTL 2505A2.5S.
Customization
This is a nut-only item, used with the matching RS-series rolled screw shaft; shaft ends can be machined to your drawings. Add the part number (or your drawing) to the inquiry cart — Nahshon works directly with NSK to confirm specs, quotation and delivery.
Matching Shaft
This nut matches shaft RS2505A - quote shaft and nut as a set; Nahshon can arrange cutting to length and shaft-end machining.
