THK NAST & RNAST Roller Follower

The THK NAST & RNAST Roller Follower is a compact, rigid bearing designed for cam mechanisms and straight motion. Its thick-walled outer ring is designed to withstand impact loads, while needle rollers and a precision cage provide smooth rotation.

The NAST Roller Follower has an inner ring and is available with inner diameters from 6 to 50 mm. The RNAST Roller Follower has no inner ring and is available with inscribed bore diameters from 7 to 60 mm. Both are separable designs.

Both NAST and RNAST models are available with cylindrical or spherical outer rings. The spherical outer ring helps absorb shaft-centre distortion and reduce biased loading. Basic dynamic load ratings range from 4.12 to 38.7 kN for NAST and 2.74 to 38.7 kN for RNAST