RNFCL 1212A3 is an NSK R-series rolled ball screw nut (Round flanged nut with end-cap recirculation): for 12 mm shaft diameter and 12 mm lead, accuracy grade Ct10, 3 effective ball turns, without seal, with basic load ratings of Ca 4.35 kN (dynamic) and C0a 6.58 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 12 mm shaft dia. × 12 mm lead: RNFCL 1212A6, RNFTL 1212A3.
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 RS1212A - quote shaft and nut as a set; Nahshon can arrange cutting to length and shaft-end machining.
