THK NAST & RNAST Series Separable Roller Follower

The THK NAST & RNAST Series Separable Roller Follower is a compact, rigid guide roller designed for cam mechanisms and straight-line motion. Its thick-wall outer ring, needle rollers and precision cage provide smooth rotation and good resistance to impact loads.

The NAST Series has a separable inner ring and is available in standard or NAST-ZZ side-plate configurations, while RNAST removes the inner ring for direct mounting on a shaft. NAST covers 6 to 50 mm inner diameters, while RNAST covers 7 to 60 mm inscribed bore diameters.

Basic dynamic load ratings range from 4.12 to 38.7 kN for NAST and 2.74 to 38.7 kN for RNAST, depending on the model.